CN101923418B - Object sensing system and method - Google Patents
Object sensing system and method Download PDFInfo
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- CN101923418B CN101923418B CN 201010143684 CN201010143684A CN101923418B CN 101923418 B CN101923418 B CN 101923418B CN 201010143684 CN201010143684 CN 201010143684 CN 201010143684 A CN201010143684 A CN 201010143684A CN 101923418 B CN101923418 B CN 101923418B
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Abstract
The invention provides an object sensing system and an object sensing method, which are used for sensing object information of an object in an indicated space, such as a target position of the object on an indicated plane. Particularly, images related to the indicated space are captured from images of optical domains formed asynchronously, and the object information of the object in the indicated space is determined according to the captured images.
Description
Technical field
The invention relates to a kind of object detecting system and method, especially, the invention relates to light territory (non-coincident fields of light) that a kind of utilization do not form simultaneously and object detecting system and the method for single orthoscopic image sensor (line image sensor).
Background technology
Because touch control screen (touch screen) can allow the operator intuitively see through the advantage that the coordinate input of relative display is carried out in the way of contact, touch control screen has become the input media of the now common configuration of display.Touch control screen to be to be widely used in all kinds of electronic products with display, for example, and monitor, mobile computer, flat computer, ATM (Automatic Teller Machine), point-of-sale terminals, visitor's guide system, industrial control system, etc.
Except the Touch Screen that the operators such as traditional resistor formula, condenser type must contact, the coordinate input mode of utilizing camera assembly (image-capturing device) to allow the operator need not really to touch display also is used.Utilize the related prior art of the non-contact type touch control screen (or being called the optical touch control screen) of camera assembly to ask for an interview the 4th, 507, No. 557 patents of United States Patent (USP) notification number, seldom do at this and give unnecessary details.Above-mentioned in the optical image mode, reach the object detecting system of object space judgement except can be applicable to Touch Screen, also can be applied to touch-control plotting sheet, touch control controller etc.
For the position of more accurate parsing input point even can support the multiple spot input, prior art about the optical touch control screen, the design proposal of existing multiple different light sources kenel, light reflection subassembly and leaded light component is suggested, so that more angle functions about the input point position to be provided, in order to the position of resolving exactly input point.For example, United States Patent (USP) notification number the 7th, 460, No. 110 patents, it discloses and utilizes the object that possesses the radioluminescence source to drop in the indicating area, and cooperate the catoptron of a slice waveguide assemblies (waveguide) and installing waveguide assemblies two edges, and then cause upper and lower light territory (coincident fields of light) two-layer and that form simultaneously, image unit can capture upper and lower two-layer different image simultaneously by this.
Yet, if will capture simultaneously, two-layer different image, image unit must adopt the higher matrix type image sensor of cost (area image sensor), multiple orthoscopic image sensor (multiple-lineimage sensor) or two orthoscopic image sensors.In addition, adopt matrix type image sensor, multiple orthoscopic image sensor or two orthoscopic image sensors, the optical touch control screen need to expend more calculation resources could resolve the image that these image sensors capture, and especially adopts the matrix type image sensor.In addition, adopt matrix type image sensor, multiple orthoscopic image sensor or two orthoscopic image sensors, the error that its system assembles of optical touch control screen causes can cause these image sensors to sense wrong light territory or sensing less than the situation in light territory, especially adopts two orthoscopic image sensors.
In addition, need possess object, waveguide assemblies and the catoptron in radioluminescence source according to the optical touch control screen of the 7th, 460, No. 110 patents of United States Patent (USP) notification number, the three arranges in pairs or groups simultaneously just can reach upper and lower light territory two-layer and that form simultaneously.Significantly, the framework of the 7th, 460, No. 110 patents of United States Patent (USP) notification number is comparatively complicated.And, showing the prior art of Touch Screen about optics, its image unit still has to be hoisted to the identification scope of indicating area and the resolution that drops on the object in the indicating area.
Summary of the invention
Therefore, one object of the present invention is to provide a kind of object detecting system and method, in order to similarly to utilize the target location of optical mode detecting object on the indication plane.And especially, light territory (non-coincident fields of light) and single orthoscopic image sensor of not forming simultaneously according to object detecting system of the present invention and method utilization are to solve the problem that prior art was caused of light territory that above-mentioned utilization forms simultaneously and expensive image sensor.
In addition, another object of the present invention is to provide a kind of object detecting system and method, in order to detect the object informations such as body form, object area, object three-dimensional shape and object volume of object within comprising the indication space of indicating the plane.
The object detecting system of a kind of embodiment that proposes according to purpose of the present invention, its surrounding member (peripheral member), filtering assembly (light-filtering device), light reflection subassembly (reflector), the first reverse smooth reflection subassembly (retro reflector), the second reverse smooth reflection subassembly, the 3rd reverse smooth reflection subassembly, control module (controlling unit), the first luminescence unit (light-emitting unit) and the first image unit (image-capturing unit).Indication plane in periphery definition indication space and the indication space is for the target location of object indication on the indication plane.Surrounding member and object have relativity.The indication plane has the first edge, second edge adjacent with the first edge, three edge adjacent with the second edge and four edge adjacent with the 3rd edge and the first edge.The 3rd edge and the 4th edge form the first corner.The second edge and the 3rd edge form the second corner.Filtering assembly is arranged on the surrounding member, and is positioned at the first edge.The light reflection subassembly is arranged on the surrounding member, and is positioned at the first edge and is positioned at the back side of filtering assembly.The first reverse smooth reflection subassembly is arranged on the surrounding member, and be positioned at the first edge and be positioned at the light reflection subassembly above or below.The second reverse smooth reflection subassembly is arranged on the surrounding member, and is positioned at the second edge.The 3rd reverse smooth reflection subassembly is arranged on the surrounding member, and is positioned at the 3rd edge.The first luminescence unit is electrically connected to control module, and is arranged at the first corner periphery.The first luminescence unit comprises the first light emitting source and the second light emitting source.The first luminescence unit is controlled by control module, launches the first light to drive the first light emitting source.The first light passes through the indication space, and then forms the first smooth territory.The first luminescence unit and by control module control is launched the second light to drive the second light emitting source.The second light passes through the indication space, and then forms the second smooth territory.Filtering assembly does not allow the first light pass through, but allows the second light pass through.The first image unit is electrically connected control module, and is arranged at the first corner periphery.The first image unit defines the first camera point.The first image unit is controlled by control module, and when the first smooth territory formed, the first image that reaches the part surrounding member on the second edge on the first edge was presented in by the first reverse smooth reflection subassembly and the second reverse smooth reflection subassembly in acquisition indication space.The first image unit and by control module control, when the second smooth territory formed, acquisition indication space was by the 3rd reverse smooth reflection subassembly and the light reflection subassembly is presented on the 3rd edge and the first reflected image of the part surrounding member at this second edge.Control module is processed the first image and the first reflected image, is positioned at the object information in indication space to determine object.
The object detecting system of a kind of embodiment that proposes according to purpose of the present invention, wherein the light reflection subassembly can be level crossing or prism.
The object detecting system of a kind of embodiment that proposes according to purpose of the present invention, wherein the light reflection subassembly comprises the first reflecting surface and the second reflecting surface.The first reflecting surface and the second reflecting surface be haply with right angle intersection, and towards the indication space.The main plane of extending of indication plane definition.The plane is extended in the definition of the first reflecting surface for the first time.The plane is extended in the definition of the second reflecting surface for the second time.Each intersects with miter angle haply with the main plane of extending with extending for the second time the plane to extend for the first time the plane.
The object detecting system of a kind of embodiment that proposes according to purpose of the present invention, wherein the light reflection subassembly can be prism.
The object detecting system of a kind of embodiment that proposes according to purpose of the present invention, wherein the first image unit orthoscopic image sensor.
The object detecting system of the another kind of embodiment that proposes according to purpose of the present invention further comprises the 4th reverse smooth reflection subassembly, the second luminescence unit and the second image unit.The 4th reverse smooth reflection subassembly is to be arranged on the surrounding member, and is positioned at the 4th edge.The second luminescence unit system is electrically connected to control module, and is arranged at the second corner periphery.The second luminescence unit comprises the 3rd light emitting source and the 4th light emitting source.The second luminescence unit system launches the first light by control module control to drive the 3rd light emitting source.The second luminescence unit and by control module control is launched the second light to drive the 4th light emitting source.The second image unit system is electrically connected control module, and is arranged at the second corner periphery.The second image unit defines the second camera point.The second image unit is by control module control, and when the first smooth territory formed, the second image that reaches the part surrounding member on the 4th edge on the first edge was presented in by the first reverse smooth reflection subassembly and the 4th reverse smooth reflection subassembly in acquisition indication space.The second image unit and by control module control, when the second smooth territory formed, the second reflected image of the part surrounding member on the 3rd edge and the 4th edge was presented in acquisition indication space by the 3rd reverse smooth reflection subassembly and light reflection subassembly.Control module process the first image, the second image, the first reflected image and the second reflected image wherein at least the two, to determine object information.
The object detecting system of the another kind of embodiment that proposes according to purpose of the present invention, wherein the second image unit is the orthoscopic image sensor.
The object detecting method of a kind of embodiment that proposes according to purpose of the present invention.Enforcement comprises surrounding member, filtering assembly, light reflection subassembly, the first reverse smooth reflection subassembly, the second reverse smooth reflection subassembly and the 3rd reverse smooth reflection subassembly according to the basis of object detecting method of the present invention.Indication plane in surrounding member definition indication space and the indication space is for the target location of object indication on the indication plane.Surrounding member and object tool relativity.The indication plane has the first edge, second edge adjacent with the first edge, three edge adjacent with the second edge and four edge adjacent with the 3rd edge and the first edge.The 3rd edge and the 4th edge form the first corner.The second edge and the 3rd edge form the second corner.Filtering assembly is arranged on the surrounding member, and is positioned at the first edge.The light reflection subassembly is arranged on the surrounding member, and is positioned at the first edge and is positioned at the back side of filtering assembly.The first reverse smooth reflection subassembly is arranged on the surrounding member, and be positioned at the first edge and be positioned at the light reflection subassembly above or below.The second reverse smooth reflection subassembly is arranged on the surrounding member, and is positioned at the second edge.The 3rd reverse smooth reflection subassembly is arranged on the surrounding member, and is positioned at the 3rd edge.At first in the first corner place, launch the first light and directive indication space according to object detecting method of the present invention, wherein the first light is by indicating the space and then forming the first smooth territory.Then, when object detecting method according to the present invention forms when the first smooth territory, be presented in the first image that reaches the part surrounding member on the second edge on the first edge in acquisition indication space, the first corner place by the first reverse smooth reflection subassembly and the second reverse smooth reflection subassembly.Then, object detecting method according to the present invention is in the first corner place, launches the second light and directive indication space, wherein filtering assembly do not allow the first light by but allow the second light pass through, the second light is by the indication space and then form the second smooth territory.Then, when object detecting method according to the present invention forms when the second smooth territory, be presented in the first reflected image of the part surrounding member on the 3rd edge and this second edge by the 3rd reverse smooth reflection subassembly and light reflection subassembly in acquisition indication space, the first corner place.At last, object detecting method according to the present invention is processed the first image and the first reflected image and is positioned at the object information in indication space to determine object.
The present invention compares with prior art: in the mode of mirror image, increase the fully scope of identification indicating area of image unit 1.; 2. increase the optical path length in image unit and corner, limit, indicating area, so can avoid when object during near corner, low even the difficulty that can't identification of resolution; 3. object real image and mirror image shadow are not stratified in the imaging of image unit; 4. use two groups of different wave length sources; 5. the object body need not be luminous; 6. object, waveguide assemblies and the catoptron three that need possess the radioluminescence source with prior art arrange in pairs or groups simultaneously and compare down, and framework of the present invention is relatively simple and easy.
Below in conjunction with accompanying drawing the present invention is elaborated.
Description of drawings
Figure 1A is the configuration diagram according to the object detecting system of better embodiment of the present invention.
Figure 1B is that surrounding member, filtering assembly, light reflection subassembly and the first reverse smooth reflection subassembly among Figure 1A is along the viewgraph of cross-section of A-A line.
Fig. 2 A is when schematically illustrating the first smooth territory and the second smooth territory and forming respectively, and P1 and P2 two input points hinder the path that light is incident upon the first image unit and the second image unit.
Fig. 2 B schematically illustrates the first image unit to capture respectively about the image in the first smooth territory and about the image in the second smooth territory at T0 and T1 two time points.
Fig. 2 C schematically illustrates the second image unit to capture respectively about the image in the first smooth territory and about the image in the second smooth territory at T0 and T1 two time points.
Fig. 3 is the process flow diagram according to the object detecting method of better embodiment of the present invention.
Embodiment
The invention provides a kind of object detecting system and method, in order to similarly to utilize the target location of optical mode detecting object on the indication plane.In addition, can detect the object informations such as body form, object area, object three-dimensional shape and object volume of object within comprising the indication space of indicating the plane according to object detecting system of the present invention and method.And the light territory that does not form simultaneously according to object detecting system of the present invention and method utilization especially.By this, can adopt lower-cost image sensor and less calculation resources to carry out according to object detecting system of the present invention and method.Below by the detailed description to better embodiment of the present invention, use abundant explanation about feature of the present invention, spirit, advantage and the feasibility of implementing.
See also Figure 1A and Figure 1B, Figure 1A is the configuration diagram according to the object detecting system 1 of better embodiment of the present invention.Figure 1B is that part surrounding member 19 (not being illustrated among Figure 1A), filtering assembly 132, light reflection subassembly 134 and the first reverse smooth reflection subassembly 122 among Figure 1A is along the viewgraph of cross-section of A-A line.Object detecting system 1 according to the present invention is in order to detect at least one object (for example, finger, stylus, etc.) in the position (for example, two positions (P1, P2) Figure 1A shown in) of indication on the plane 10.
Shown in Figure 1A, object detecting system 1 according to the present invention comprises polygonal surrounding member 19 (be not illustrated among Figure 1A, ask for an interview Figure 1B), filtering assembly 132, light reflection subassembly 134, the first reverse smooth reflection subassembly 122, the second reverse smooth reflection subassembly 124, the 3rd reverse smooth reflection subassembly 126, control module 11, the first luminescence unit 14 and the first image unit 16.Indication plane 10 in surrounding member 19 definition indication space S and the indication space S, namely surrounding member 19 is around indication space S, indication plane 10.Surrounding member 19 is contour with the indication space S approximately, for the target location (P1, P2) of object indication on indication plane 10.Surrounding member 19 has relativity with object.Indication plane 10 has the first edge 102, second edge 104 adjacent with the first edge 102, three edge 106 adjacent with the second edge 104 and four edge 108 adjacent with the 3rd edge 106 and the first edge 102.The 3rd edge 106 and the 4th edge 108 form the first corner C1.The second edge 104 and the 3rd edge 106 form the second corner C2.
Be shown in equally Figure 1A, filtering assembly 132 is arranged on the surrounding member 19, and is positioned at the first edge 102.As shown in Figure 1B, light reflection subassembly 134 is arranged on the surrounding member 19, and is positioned at the first edge 102 and is positioned at the back side of filtering assembly 132.The first reverse smooth reflection subassembly 122 is arranged on the surrounding member 19, and be arranged in the first edge 102 and be positioned at light reflection subassembly 134 above or below (in this embodiment to be positioned at light reflection subassembly 134 tops as example).The second reverse smooth reflection subassembly 124 is arranged on the surrounding member 19, and is positioned at the second edge 104.The 3rd reverse smooth reflection subassembly 126 is arranged on the surrounding member 19, and is positioned at the 3rd edge 106.Each reverse smooth reflection subassembly reflection has the incident light L1 of a conduct direction, and makes its reflected light L2 haply along reflecting back with the reverse and parallel direction of this conduct direction of incident light L1, as shown in Figure 1B.
Be shown in equally Figure 1A, the first luminescence unit 14 is electrically connected to control module 11, and is arranged at the first corner C1 periphery.The first luminescence unit 14 comprises the first light emitting source 142 and the second light emitting source 144.The first luminescence unit 14 is by control module 11 controls, to drive the first light emitting source 142 emissions the first light.The first light passes through the indication space S, and then forms the first smooth territory.The first luminescence unit 14 and by control module 11 control, to drive the second light emitting source 144 emissions the second light.The second light passes through the indication space S, and then forms the second smooth territory.Especially, as shown in Figure 1B, filtering assembly 132 does not allow the first light pass through, but allows the second light pass through.Indicate the travel path that solid arrow represents the first light in Figure 1B, dotted arrow represents the travel path of the second light.Be shown in equally Figure 1B, the first light and the second light all can be by the first reverse smooth reflection subassembly 122 retrodirective reflections, and the second light can pass through filtering assembly 132, and then by light reflection subassembly 134 regular reflections.The first light can not pass through filtering assembly 132, can not reflected by filtering assembly 132 yet.
In practical application, the first light emitting source 142 can be that emission wavelength is the infrared transmitter of 850nm, and the second light emitting source 144 can be that emission wavelength is the infrared transmitter of 940nm.
In an embodiment, light reflection subassembly 134 can be level crossing.
In another embodiment, as shown in Figure 1B, light reflection subassembly 134 can comprise the first reflecting surface 1342 and the second reflecting surface 1344.The first reflecting surface 1342 and the second reflecting surface 1344 be haply with right angle intersection, and towards the indication space S.The main plane of extending of indication plane 10 definition.The plane is extended in 1342 definition of the first reflecting surface for the first time.The plane is extended in 1344 definition of the second reflecting surface for the second time.Each intersects with miter angle haply with the main plane of extending with extending for the second time the plane to extend for the first time the plane.In practical application, above-mentioned light reflection subassembly 134 can be prism.
The first image unit 16 is electrically connected control module 11, and is arranged at the periphery of the first corner C1.The first image unit 16 definition the first camera point.The first image unit 16 is by control module 11 controls, when the first smooth territory formed, acquisition indication space S was presented in the first image that reaches the part surrounding member 19 on the second edge 104 on the first edge 102 by the first reverse smooth reflection subassembly 122 and the second reverse smooth reflection subassembly 124.The first image is included in the obstruction that the object in the indication space S causes the first light, namely is projected in the shade on the first image, for example, and the shade shown in Fig. 2 B on the image I1 (case will be specified in hereinafter shown in Fig. 2 B).The first image unit 16 and by control module 11 control, when the second smooth territory formed, acquisition indication space S was presented in the first reflected image of the part surrounding member 19 on the 3rd edge 106 and the second edge 104 by the 3rd reverse smooth reflection subassembly 126 and light reflection subassembly 134.The first reflected image is included in the obstruction that the object in the indication space S causes the second light, namely is projected in the shade on the first reflected image, for example, and the shade shown in Fig. 2 B on the image I2 (case will be specified in hereinafter shown in Fig. 2 B).
In practical application, the first image unit 16 can be the orthoscopic image sensor.
At last, control module 11 is processed the first image and the first reflected image, is positioned at the object information of indication space S to determine object.
In an embodiment, object information comprises the target location with respect to the relative position on this indication plane 10.Control module 11 according to the object in the first image in determining the first object point (for example, such as the O1 among Fig. 2 A and O2 point) on the first edge 102 or on the second edge 104.Control module 11 and on the 3rd edge 106, determine the first reflecting object point (for example, such as the R1 among Fig. 2 A and R2 point) according to the object in the first reflected image.Control module 11 and according to the first camera point (such as the coordinate points (0 among Fig. 2 A, 0)) and the online relation of the first object point (such as the O1 among Fig. 2 A and O2 point) (for example determine the first straight inbound path, such as the D1 among Fig. 2 A and D2 path), according to the first camera point (such as the coordinate points (0 among Fig. 2 A, 0)) and online relation and the light reflection subassembly 134 of the first reflecting object point (such as the R1 among Fig. 2 A and R2 point) (for example determine one first reflection paths, such as the D3 among Fig. 2 A and D4 path), and according to the plotted point of the first straight inbound path (such as the D1 among Fig. 2 A and D2 path) and the first reflection paths (such as the D3 among Fig. 2 A and D4 path) to determine relative position.
Same diagram 1A further comprises the 4th reverse smooth reflection subassembly 128, the second luminescence unit 15 and the second image unit 18 according to the object detecting system 1 of another better embodiment of the present invention.
The 4th reverse smooth reflection subassembly 128 is arranged on the surrounding member 19, and is positioned at the 4th edge 108.The second luminescence unit 15 is electrically connected to control module 11, and is arranged at the second corner C2 periphery.The second luminescence unit 15 comprises the 3rd light emitting source 152 and the 4th light emitting source 154.The second luminescence unit 15 is by control module 11 controls, to drive the 3rd light emitting source 152 emissions the first light.In practical application, the first light emitting source 142 and the 3rd light emitting source 152 is driven launches simultaneously the first light, and the first light is by the indication space S, and then form the first smooth territory.
The second luminescence unit 15 and by control module 11 control, to drive the 4th light emitting source 154 emissions the second light.In practical application, the second light emitting source 144 and the 4th light emitting source 154 is driven launches simultaneously the second light, and the second light is by the indication space S, and then form the second smooth territory.
The second image acquisition unit 18 is electrically connected control module 11, and is arranged at the periphery of the second corner C2.The second image unit 18 definition the second camera point.The second image unit 18 is by control module 11 controls, when the first smooth territory formed, acquisition indication space S was presented in the second image that reaches the part surrounding member 19 on the 4th edge 108 on the first edge 102 by the first reverse smooth reflection subassembly 122 and the 4th reverse smooth reflection subassembly 128.The second image is included in the obstruction that the object in the indication space S causes the first light, namely is projected in the shade on the second image, for example, and the shade shown in Fig. 2 C on the image I3 (case will be specified in hereinafter shown in Fig. 2 C).The second image unit 18 and by control module 11 control, when the second smooth territory formed, acquisition indication space S was presented in the second reflected image of the part surrounding member 19 on the 3rd edge 106 and the 4th edge 108 by the 3rd reverse smooth reflection subassembly 126 and light reflection subassembly 134.The second anti-photogra is included in the obstruction that the object in the indication space S causes the second light, namely is projected in the shade on the second anti-photogra, for example, and the shade shown in Fig. 2 C on the image I4 (case will be specified in hereinafter shown in Fig. 2 C).In this better embodiment, control module 11 process the first image, the second image, the first reflected image and the second reflected image wherein at least the two, to determine object information.
What need emphasize is, control module 11 also can be controlled driving the second light emitting source 144 and the 4th light emitting source 154 is launched the second light to form first the second smooth territory in advance, and row control driving the first light emitting source 142 and the 3rd light emitting source 152 emissions the first light are to form the first smooth territory again.
In practical application, the second image unit 18 can be the orthoscopic image sensor.
Below will take two input points (P1, P2) fall within Figure 1A indicating plane 10 and by the first image unit 16 and the second image unit 18 as example, use illustrating that it forms the image situation of light territory and acquisition at different time according to object detecting system of the present invention 1.
Shown in Fig. 2 A, solid line representative drives the first light emitting sources 142 and the 3rd light emitting source 152 emissions the first light forming the first smooth territory in 11 controls of T0 time point control module among the figure, and P1 and P2 two input points hinder the path of the first smooth retrodirective reflection to the first image unit 16 and the second image unit 18.The representative of pecked line among Fig. 2 A drives the second light emitting sources 144 and the 4th light emitting source 154 at T1 time point control module 11 and launches the second light forming first the second smooth territory in advance, and P1 and P2 two input points hinder the path of the second smooth retrodirective reflection and regular reflection to the first image unit 16 and the second image unit 18.
Be shown in equally Fig. 2 A, P1 and P2 two input points hinder the path that the first light and the second light reflexes to the first image unit 16 at T0 and T1 two time points and form respectively φ 2, φ 1, φ 4 and 3 four angle amounts of φ.Shown in Fig. 2 B, at the T0 time point, 16 acquisitions of the first image unit have the real image shade of corresponding angles vector φ 2 and φ 1 about the image I1 in the first smooth territory on it.At the T1 time point, 16 acquisitions of the first image unit have the mirror image shade of corresponding angles vector φ 4 and φ 3 about the image I2 in the second smooth territory on it.Because P1 and P2 two input points in the second smooth territory, can cause the real image shade with corresponding angles vector φ 2 and φ 1 at image I2 equally.In order to alleviate calculation resources, to shorten the processing time, at the T1 time point, the first image unit 16 only captures the sub-image at corresponding the first edge 102, the sub-image at corresponding the second edge 104 does not then capture, so, image I2 shown in Fig. 2 B is upper except the mirror image shade of corresponding angles vector φ 4 and φ 3, also has the real image shade of corresponding angles vector φ 2, but does not have the real image shade of corresponding angles vector φ 1.
Be shown in equally Fig. 2 A, P1 and P2 two input points hinder the path that the first light and the second light reflexes to the second image unit 18 at T0 and T1 two time points and form respectively θ 2, θ 21, θ 24 and 23 4 angle amounts of θ.Shown in Fig. 2 C, at the T0 time point, 18 acquisitions of the second image unit have the real image shade of corresponding angles vector θ 22 and θ 21 about the image I3 in the first smooth territory on it.At the T1 time point, 18 acquisitions of the second image unit have the mirror image shade of corresponding angles vector θ 24 and θ 23 about the image I4 in the second smooth territory on it.Because P1 and P2 two input points in the second smooth territory, can cause the real image shade with corresponding angles vector θ 22 and θ 21 at image I4 equally.In order to alleviate calculation resources, to shorten the processing time, at the T1 time point, the second image unit 18 only captures the sub-image at corresponding the first edge 102, the sub-image at corresponding the 4th edge 108 does not then capture, so, image I4 shown in Fig. 2 C is upper except the mirror image shade of corresponding angles vector θ 24 and θ 23, also has the real image shade of corresponding angles vector θ 22, but does not have the real image shade of corresponding angles vector θ 21.
Significantly, by resolving image I1, image I2, image I3 and the indicated angle amount of image I4 top shadow, can calculate exactly the position of P1 shown in Fig. 2 A and P2 two input points according to object detecting system 1 of the present invention.What more need emphasize is all can be single orthoscopic image sensor according to the first image unit 16 of the present invention and the second image unit 18.By this, can adopt expensive image sensor according to object detecting system of the present invention, also can avoid image sensor to sense wrong light territory or sensing less than the situation in light territory in its assembling.The maximum difference of the present invention and prior art is: in the mode of mirror image, increase the fully scope of identification indicating area of image unit 1.; 2. increase the optical path length in image unit and corner, limit, indicating area, so can avoid when object during near corner, low even the difficulty that can't identification of resolution; 3. object real image and mirror image shadow are not stratified in the imaging of image unit; 4. use two groups of different wave length sources; 5. the object body need not be luminous; 6. object, waveguide assemblies and the catoptron three that need possess the radioluminescence source with prior art arrange in pairs or groups simultaneously and compare down, and framework of the present invention is relatively simple and easy.
See also Fig. 3, Fig. 3 illustrates the process flow diagram according to the object detecting method 2 of a better embodiment of the present invention.Enforcement comprises surrounding member, filtering assembly, light reflection subassembly, the first reverse smooth reflection subassembly, the second reverse smooth reflection subassembly and the 3rd reverse smooth reflection subassembly according to the basis of object detecting method 2 of the present invention.Indication plane in surrounding member definition indication space and the indication space is for the target location of object indication on the indication plane.Surrounding member and object tool one contrast relation.The indication plane has the first edge, second edge adjacent with the first edge, three edge adjacent with the second edge and four edge adjacent with the 3rd edge and the first edge.The 3rd edge and the 4th edge form the first corner.The second edge and the 3rd edge form the second corner.Filtering assembly is arranged on the surrounding member, and is positioned at the first edge.The light reflection subassembly is arranged on the surrounding member, and is positioned at the first edge and is positioned at the back side of filtering assembly.The first reverse smooth reflection subassembly is arranged on the surrounding member, and be positioned at the first edge and be positioned at the light reflection subassembly above or below.The second reverse smooth reflection subassembly is arranged on the surrounding member, and is positioned at the second edge.The 3rd reverse smooth reflection subassembly is arranged on the surrounding member, and is positioned at the 3rd edge.
The embodiment of surrounding member, filtering assembly, light reflection subassembly, the first reverse smooth reflection subassembly, the second reverse smooth reflection subassembly and the 3rd reverse smooth reflection subassembly is asked for an interview shown in Figure 1A and Figure 1B, does not repeat them here.
As shown in Figure 3, according to object detecting method 2 of the present invention execution in step S20 at first, in the first corner place, launch the first light and directive indication space, wherein the first light is by the indication space and then form the first smooth territory.
Then, according to object detecting method 2 execution in step S22 of the present invention, when the first smooth territory forms, be presented in the first image that reaches the part surrounding member on the second edge on the first edge in acquisition indication space, the first corner place by the first reverse smooth reflection subassembly and the second reverse smooth reflection subassembly.
Then, according to object detecting method 2 execution in step S24 of the present invention, in the first corner place, launch the second light and directive indication space, wherein filtering assembly do not allow the first light by but allow the second light pass through, the second light is by indication space and then form the second smooth territory.
Then, according to object detecting method 2 execution in step S26 of the present invention, when the second smooth territory forms, be presented in the first reflected image of the part surrounding member on the 3rd edge and this second edge by the 3rd reverse smooth reflection subassembly and light reflection subassembly in acquisition indication space, the first corner place.
At last, according to object detecting method 2 execution in step S28 of the present invention, process the first image and the first reflected image and be positioned at the object information in indication space to determine object.The content that contains about object information with and the mode that determines in above describing in detail, do not repeat them here.
According to the basis of the object detecting method 2 of another better embodiment of the present invention and comprise the 4th reverse smooth reflection subassembly.The 4th reverse smooth reflection subassembly is arranged on the surrounding member, and is positioned at the 4th edge.
Step S20 and launch the first light and directive indication space in the second corner place.Step S22 and in acquisition indication space, the second corner place, by the first reverse smooth reflection subassembly and the 4th reverse smooth reflection subassembly is presented on the first edge and the 4th edge on the second image of part surrounding member.Step S24 and launch the second light and directive indication space in the second corner place.The second reflected image of the part surrounding member on the 3rd edge and the 4th edge is presented in step S26 and acquisition indication space by the 3rd reverse smooth reflection subassembly and light reflection subassembly.Step S28 process the first image, the second image, the first reflected image and the second reflected image wherein at least the two to determine object information.
In an embodiment, the first image and the first reflected image can get by single orthoscopic image sensor acquisition.The second image and the second reflected image can get by another orthoscopic image sensor acquisition.
By the detailed description of above better embodiment, hope can be known description feature of the present invention and spirit more, and is not to come claim scope of the present invention is limited with above-mentioned disclosed better embodiment.On the contrary, its objective is that hope can contain in the scope of claim of being arranged in of various changes and tool equality institute of the present invention wish application.
Claims (10)
1. object detecting system is characterized in that comprising:
Surrounding member, this surrounding member definition indication space and should the indication space in the indication plane indicate target location on plane for the object indication at this, this surrounding member and this object have relativity, this indication plane has the first edge, second edge adjacent with this first edge, three edge adjacent with this second edge and four edge adjacent with the 3rd edge and this first edge, the 3rd edge and the 4th edge form the first corner, and this second edge and the 3rd edge form the second corner;
Filtering assembly, this filtering assembly are arranged on this surrounding member and are positioned at this first edge;
Light reflection subassembly, this light reflection subassembly are arranged on this surrounding member and are positioned at this first edge and are positioned at the back side of this filtering assembly;
The first reverse smooth reflection subassembly, this first reverse smooth reflection subassembly be arranged on this surrounding member and be positioned at this first edge and be positioned at this light reflection subassembly above or below;
The second reverse smooth reflection subassembly, this second reverse smooth reflection subassembly is arranged on this surrounding member and is positioned at this second edge;
The 3rd reverse smooth reflection subassembly, the 3rd reverse smooth reflection subassembly is arranged on this surrounding member and is positioned at the 3rd edge;
Control module;
The first luminescence unit, this first luminescence unit is electrically connected to this control module and is arranged at this first corner periphery, this first luminescence unit comprises the first light emitting source and the second light emitting source, this the first luminescence unit system controls to drive this first light emitting source by this control module and launches the first light, this first light is by this indication space and then form the first smooth territory, this first luminescence unit and control to drive this second light emitting source by this control module and launch the second light, this second light is by this indication space and then form the second smooth territory, wherein this filtering assembly do not allow this first light by but allow this second light pass through; And
The first image unit, this first image unit is electrically connected this control module and is arranged at this first corner periphery, this first image unit defines the first camera point, this first image unit is by this control module control, when this first smooth territory forms, capture this indication space and be presented in the first image that reaches this surrounding member of part on this second edge on this first edge by this first reverse smooth reflection subassembly and this second reverse smooth reflection subassembly, capture this indication space and be presented in the first reflected image of this surrounding member of part on the 3rd edge and this second edge by the 3rd reverse smooth reflection subassembly and this light reflection subassembly when this second smooth territory forms, the relativity that this surrounding member and this object have is so that the projection on this first image and this first reflected image of this object goes out shade;
Wherein this control module is processed this first image and this first reflected image is positioned at the object information in this indication space to determine this object.
2. object detecting system as claimed in claim 1, it is characterized in that: this light reflection subassembly is level crossing or prism.
3. object detecting system as claimed in claim 1, it is characterized in that: this light reflection subassembly comprises the first reflecting surface and the second reflecting surface, this first reflecting surface and this second reflecting surface are with right angle intersection and towards this indication space, the main plane of extending of this indication plane definition, the plane is extended in this first reflecting surface definition for the first time, the plane is extended in the definition of this second reflecting surface for the second time, and this extends for the first time the plane and extends for the second time the plane with this each is crossing with miter angle with this master extension plane.
4. object detecting system as claimed in claim 1, it is characterized in that: this first image unit is the orthoscopic image sensor.
5. object detecting system as claimed in claim 1, it is characterized in that: this object information comprises this target location with respect to the relative position on this indication plane, this control module according to this object in this first image in determining the first object point on this first edge or on this second edge, on the 3rd edge, determine the first reflecting object point according to this object in this first reflected image, online relation according to this first camera point and this first object point determines the first straight inbound path, online relation and this light reflection subassembly according to this first camera point and this first reflecting object point determine the first reflection paths, and according to the plotted point of this first straight inbound path and this first reflection paths to determine this relative position.
6. object detecting system as claimed in claim 1 is characterized in that further comprising:
The 4th reverse smooth reflection subassembly, the 4th reverse smooth reflection subassembly is arranged on this surrounding member and is positioned at the 4th edge;
The second luminescence unit, this second luminescence unit is electrically connected to this control module and is arranged at this second corner periphery, this second luminescence unit comprises the 3rd light emitting source and the 4th light emitting source, this second luminescence unit is controlled to drive the 3rd light emitting source by this control module and is launched this first light, this second luminescence unit and control to drive the 4th light emitting source by this control module and launch this second light; And
The second image unit, this second image unit is electrically connected this control module and is arranged at this second corner periphery, this second image unit defines the second camera point, this second image unit is by this control module control, when this first smooth territory forms, capture this indication space and be presented in the second image that reaches this surrounding member of part on the 4th edge on this first edge by this first reverse smooth reflection subassembly and the 4th reverse smooth reflection subassembly, when this second smooth territory forms, capture this surrounding member of part on the 3rd edge and the 4th edge is presented in this indication space by the 3rd reverse smooth reflection subassembly and this light reflection subassembly the second reflected image;
Wherein this control module process this first image, this second image, this first reflected image and this second reflected image wherein at least the two to determine this object information.
7. object detecting system as claimed in claim 6 is characterized in that: this second image unit is an orthoscopic image sensor.
8. object detecting method, comprise: the indication plane in surrounding member definition indication space and this indication space is for the target location of object indication on this indication plane, this surrounding member and this object have relativity, this indication plane has the first edge, second edge adjacent with this first edge, three edge adjacent with this second edge and four edge adjacent with the 3rd edge and this first edge, the 3rd edge and the 4th edge form the first corner, this second edge and the 3rd edge form the second corner, filtering assembly is arranged on this surrounding member and is positioned at this first edge, the light reflection subassembly is arranged on this surrounding member and is positioned at this first edge and is positioned at the back side of this filtering assembly, the first reverse smooth reflection subassembly be arranged on this surrounding member and be positioned at this first edge and be positioned at this light reflection subassembly above or below, the second reverse smooth reflection subassembly is arranged on this surrounding member and is positioned at this second edge, the 3rd reverse smooth reflection subassembly is arranged on this surrounding member and is positioned at the 3rd edge, it is characterized in that this object detecting method comprises lower step:
(a) in this first corner place, launch this indication space of the first light and directive, wherein this first light is by this indication space and then form the first smooth territory;
(b) when this first smooth territory forms, capture this indication space in this first corner place and be presented in the first image that reaches this surrounding member of part on this second edge on this first edge by this first reverse smooth reflection subassembly and this second reverse smooth reflection subassembly;
(c) in this first corner place, launch this indication space of the second light and directive, wherein this filtering assembly does not allow this first light but allow this second light pass through, and this second light is by this indication space and then form the second smooth territory;
(d) when this second smooth territory forms, capture this indication space in this first corner place and be presented in the first reflected image that reaches this surrounding member of part at this second edge on the 3rd edge by the 3rd reverse smooth reflection subassembly and this light reflection subassembly, the relativity that this surrounding member and this object have is so that the projection on this first image and this first reflected image of this object goes out shade; And
(e) process this first image and this first reflected image and be positioned at the object information in this indication space to determine this object.
9. object detecting method as claimed in claim 8, it is characterized in that: in step (b), the first camera point is defined, in step (e), this object information comprises this target location with respect to the relative position on this indication plane, the first object point according to this object in this first image in determining on this first edge or on this second edge, the first reflecting object point decides on the 3rd edge according to this object in this first reflected image, the first straight inbound path decides according to the online pass of this first camera point and this first object point, the first reflection paths decides according to online relation and this light reflection subassembly of this first camera point and this first reflecting object point, and this relative position decides according to the plotted point of this first straight inbound path and this first reflection paths.
10. object detecting method as claimed in claim 8, it is characterized in that: the 4th reverse smooth reflection subassembly is arranged on this surrounding member and is positioned at the 4th edge, step (a) and launch this first light and this indication space of directive in this second corner place, step (b) and in this second corner place capture this indication space be presented on this first edge by this first reverse smooth reflection subassembly and the 4th reverse smooth reflection subassembly and the 4th edge on the second image of this surrounding member of part, step (c) and launch this second light and this indication space of directive in this second corner place, step (d) and capture this indication space and be presented in the second reflected image of this surrounding member of part on the 3rd edge and the 4th edge by the 3rd reverse smooth reflection subassembly and this light reflection subassembly, step (e) is processed this first image, this second image, this first reflected image and this second reflected image wherein at least the two to determine this object information.
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| CN 201010143684 CN101923418B (en) | 2010-03-07 | 2010-03-07 | Object sensing system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010143684 CN101923418B (en) | 2010-03-07 | 2010-03-07 | Object sensing system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI456464B (en) | 2011-12-21 | 2014-10-11 | Pixart Imaging Inc | Optical touch system |
| CN103186291B (en) * | 2011-12-29 | 2015-12-02 | 原相科技股份有限公司 | Optical touch control system |
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| JP2006318512A (en) * | 1998-10-02 | 2006-11-24 | Semiconductor Energy Lab Co Ltd | Information terminal equipment |
| US7460110B2 (en) * | 2004-04-29 | 2008-12-02 | Smart Technologies Ulc | Dual mode touch system |
| CN100468303C (en) * | 2003-02-14 | 2009-03-11 | 奈克斯特控股公司 | Touch screen signal processing |
| CN101609381A (en) * | 2008-06-18 | 2009-12-23 | 北京汇冠新技术股份有限公司 | Use the touch-detection sensing device of camera and reflective mirror |
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2010
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006318512A (en) * | 1998-10-02 | 2006-11-24 | Semiconductor Energy Lab Co Ltd | Information terminal equipment |
| CN100468303C (en) * | 2003-02-14 | 2009-03-11 | 奈克斯特控股公司 | Touch screen signal processing |
| US7460110B2 (en) * | 2004-04-29 | 2008-12-02 | Smart Technologies Ulc | Dual mode touch system |
| CN101609381A (en) * | 2008-06-18 | 2009-12-23 | 北京汇冠新技术股份有限公司 | Use the touch-detection sensing device of camera and reflective mirror |
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