WO2014048199A1

WO2014048199A1 - Eyeglass measuring and matching instrument, eyeglass measuring and matching server and eyeglass measuring and matching method

Info

Publication number: WO2014048199A1
Application number: PCT/CN2013/082241
Authority: WO
Inventors: 余勇波
Original assignee: Yu Yongbo
Priority date: 2012-09-28
Filing date: 2013-08-26
Publication date: 2014-04-03
Also published as: CN103690171A

Abstract

The invention discloses an eyeglass measuring and matching instrument, an eyeglass measuring and matching server and an eyeglass measuring and matching method. The eyeglass measuring and matching instrument comprises: an image acquisition unit (10) for acquiring face images of the user; a storage unit (20) for storing the acquired face images; a measuring unit (30) for measuring the stored face images to thereby obtain the face characteristic data of the body of the user; and a matching unit (40) for matching the face characteristic data of the body to obtain the eyeglass parameters of the user. The eyeglass measuring and matching instrument, the eyeglass measuring and matching server and the eyeglass measuring and matching method can enable the user to quickly and conveniently select the eyeglass that is suitable for the user by measuring the face characteristic data of the body through photographing and matching rational eyeglass parameters.

Description

Glasses measuring and matching device, glasses measuring and matching service end and glasses measuring and matching method

Technical field

The invention relates to the field of glasses, in particular to a glasses measuring and matching device, a glasses measuring and matching service end and a glasses measuring and matching method for selecting a suitable eyeglass by measuring facial facial feature data.

Background technique

When people choose to buy various types of glasses such as glasses, sunglasses, reading glasses, etc., the traditional choice is to try on, that is, glasses with different sizes and styles are worn on the face one by one, and the glasses are matched with the face by experiencing the glasses. Choose the best glasses for your tightness, comfort, and aesthetics. However, this type of glasses selection is not only inefficient, but because not everyone is very sensitive to try-on, especially for younger children, although it has not been able to really buy the most suitable after many trials. Own glasses.

Summary of the invention

The main technical problem to be solved by the present invention is to provide a glasses measuring and matching device, a glasses measuring and matching service end, and a glasses measuring and matching method, which are convenient for the user to select glasses suitable for self-wearing.

In order to solve the above technical problem, the present invention provides a glasses measuring and matching device, comprising:

An image obtaining unit, configured to acquire a facial image of the user;

a storage unit, configured to store the acquired facial image;

a measuring unit, configured to measure the stored facial image, thereby obtaining human facial feature data of the user;

And a matching unit, configured to match the facial feature data of the human body to obtain a glasses parameter of the user.

Preferably, the facial image includes a frontal image and a side image, the human facial feature data including at least one of two pupil spacing, a spacing between the ear curvature and the eye plane, and a bridge width, the glasses parameters including At least one of a frame width, a temple length, and a nose pad spacing.

Preferably, a result output unit is further included, and is connected to the matching unit for outputting the glasses parameter by using a voice or a display screen.

Preferably, the measuring unit further includes a scaling module, configured to process the data obtained by directly measuring the facial image according to a preset scaling ratio, to obtain human facial feature data of the user.

Preferably, the method further includes measuring the position identification, which is spaced apart from the image acquisition unit by a predetermined distance.

Preferably, a head holder is further included, the head holder including a first fixing portion that positions the front side of the user and a second fixing portion that positions the side of the user.

Preferably, the glasses measuring and matching device comprises a server and at least one client, the image obtaining unit is disposed at the client, and the storage unit, the measuring unit and the matching unit are all disposed at the server, The image acquisition unit and the storage unit are connected by a network.

A glasses measuring and matching server includes:

a storage unit, configured to store a facial image of a user transmitted by at least one client;

A method for measuring and matching glasses, comprising the steps of:

A: Acquire a user's face image and store it;

B: measuring the stored facial image, thereby obtaining human facial feature data of the user;

C: Matching the facial feature data of the human body to obtain the glasses parameters of the user.

Preferably, the method further includes the step D: outputting the glasses parameters by using a voice or a display screen.

The invention has the beneficial effects that the glasses measuring and matching device, the glasses measuring and matching service end and the glasses measuring and matching method obtain the facial image of the user by photographing, and measure the facial facial feature data according to the facial image, thereby matching the reasonable The glasses parameters enable the user to quickly and conveniently select glasses suitable for the user, including myopia glasses, reading glasses, sunglasses, etc., to avoid wasting a lot of time when the user selects the glasses to try on various glasses, especially for children. Users who are not sensitive provide a scientific and reasonable way to choose glasses.

DRAWINGS

1 is a structural block diagram of a glasses measuring and matching device according to an embodiment of the present invention;

2 is a schematic diagram of a measurement position identification according to an embodiment of the present invention;

3 is a schematic diagram of a measurement position identification according to another embodiment of the present invention;

4 is a flow chart of a method for measuring and matching glasses according to an embodiment of the present invention;

FIG. 5 is a structural block diagram of a glasses measuring and matching device according to an embodiment of the present invention.

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings.

The invention provides a glasses measuring and matching device, a glasses measuring and matching service end, and a glasses measuring and matching device or a glasses measuring and matching server, adopting a photographing manner to acquire a facial image of the user, and measuring the user from the facial image. The human facial feature data, and matching the reasonable eyeglass parameters according to the measured data, thereby selecting the eyeglass matching method that is most suitable for the glasses worn by the user.

Embodiment 1:

As shown in FIG. 1 , the glasses measuring and matching device mainly includes an image acquiring unit 10 , a storage unit 20 , a measuring unit 30 , and a matching unit 40 , and may further include a result output unit 50 . Each unit may be integrated in the computer in whole or in part, and the computer may further include a control unit for performing unified control of the image acquisition unit 10, the storage unit 20, the measurement unit 30, the matching unit 40, the result output unit 50, and the like.

The image obtaining unit 10 can be a camera, a camera, a CCD (image sensor), and the like, and can be used to acquire a facial image of the user. In this embodiment, it is preferable to acquire two types of facial images of the user, that is, a front image and a side image. In order to improve the measurement accuracy and the accuracy of the glasses measurement, when the front image is taken, the user's face should face the lens as much as possible, and both eyes. Directly view the lens to ensure that the resulting front image is symmetrically distributed; then, when taking a side image, the user's body or head should be rotated 90 degrees so that the face plane is exactly perpendicular to the plane in which the lens is located. In one embodiment, the glasses measuring and matching device further includes a head fixing frame disposed at a distance from the image acquiring unit 10 for positioning the user's head during photographing to reduce the head angle. Measurement error caused by movement or deflection. The head holder includes a first fixing portion for positioning a front side of the user and a second fixing portion for positioning a side of the user. For example, the first fixing portion may be a U-shaped support frame fixed at an angle, which can support the user. The neck and the cheeks are rear facing the lens, and the second fixing portion is a U-shaped bracket that is 90 degrees away from the U-shaped support frame, so that the user's side faces the lens, of course, the first fixing frame and The second fixing frame can also be the same mechanism in different angle states, and the user can rotate it according to specific needs to facilitate positioning on the front side or the side side.

The storage unit 20 is configured to store the face image acquired by the image acquisition unit 10. The storage unit 20 may be a memory card in the camera, and may directly store a facial image, or may be a storage space connected to the image acquisition unit 10 such as a camera through a data line, a wired or wireless network, or the like, such as a hard disk in a computer.

The measuring unit 30 is configured to measure the facial image stored by the storage unit 20, thereby obtaining the human facial feature data of the user. Since the human body face itself has a three-dimensional shape, in order to select the glasses that are most suitable for the user to wear, the present embodiment takes a picture of the user's face after taking the image of the user and then measures the key parts thereof, thereby obtaining body facial feature data reflecting the measurement result, for example, two The distance between the corners of the eyes, the length of the eyes, the height of the bridge of the nose, etc. can be used to select reference data for the specifications of the glasses. At present, the glasses industry usually adopts three kinds of glasses parameters to reflect the size specifications, namely the frame width, the length of the temple and the width of the middle beam. The width of the middle beam is usually 17-18 mm. In addition, the nose pad spacing can also be used as a key parameter for the optional glasses, so it can measure the three types of glasses parameters, such as the frame width, the temple length and the nose pad spacing, which are most relevant and relatively easy to measure. Human facial feature data, and each data is matched according to experience to obtain corresponding eyeglass parameters, thereby determining glasses suitable for the user.

Experiments have shown that the three facial features of the two pupil spacing, the distance between the ear bend and the eye plane, and the width of the nose are the most relevant to the three glasses parameters, namely the width of the eyeglass frame, the length of the temple and the distance between the nose pads. It is easy to measure by the captured face image of the user. Specifically, the spacing between the two frames is approximately equal to twice the width of the eyeglass frame, the spacing between the frame and the hinge, and the width of the center beam. The spacing between the frame and the hinge of most glasses is about 7.5 mm. The width is about 17~18mm, so the width of the eyeglass frame can be determined by measuring the distance between the two frames. For example, when the distance between the two frames is 140mm, the width of the eyeglass frame can be 52-54mm; the distance between the ear bend and the eye plane and the length of the temple Direct correlation, for example, when the distance between the ear bend and the plane of the eye is 94 mm, the length of the temple can be 138-139 mm, and the width of the bridge of the nose is directly related to the distance between the nose pads. For example, when the width of the bridge of the nose is 20 mm, the distance between the nose pads can be 20-22 mm.

Therefore, in the present embodiment, the above three sets of human facial feature data are preferably measured by the measuring unit 30, that is, the two pupil spacing and the nose bridge width are measured from the front image, and the distance between the ear curved portion and the eye plane is measured from the side image. Specifically, the measurement process may be manually measured or automatically measured by software. For example, when manually measuring, the front image of the user is opened, the coordinate positions corresponding to the left and right sides are selected, and two coordinate positions are connected to obtain a straight line, and then used. The distance measuring tool measures the length of the straight line to obtain two spacings, then selects two coordinate positions on both sides of the nose bridge and connects them to obtain a second straight line, and then uses the distance measuring tool to measure the length of the straight line to obtain the width of the bridge of the nose, and finally opens the side of the user. Image, select the corresponding coordinate positions on the ear bend and the eye plane and connect them to obtain a third straight line, and then measure the length of the straight line by using a distance measuring tool to obtain the distance between the ear bend and the eye plane. For example, when using software to automatically measure, the software can automatically capture the above coordinate positions by searching for color boundaries or brightness boundaries. For example, in a predetermined area, when the image color of a certain position is changed from the background color to the human body color, the software automatically determines. The position is left 鬓. Conversely, if the color of the image at a certain position is changed from the color of the human body to the background color, the software automatically determines that the position is the right 鬓, and the distance between the two positions is automatically measured by the distance measuring tool. If there is a sudden increase in the brightness of the image at a certain position, the software automatically determines that the position is the left side of the bridge of the nose. Conversely, if the brightness of the image at a certain position suddenly decreases, the software automatically determines The position is on the right side of the bridge of the nose, and the distance between the two locations can be automatically measured using a distance measuring tool to obtain the bridge width.

In general, when the face image captured by the image acquisition unit is the same as the real face ratio of the user (the ratio is 1:1), the facial feature data obtained by the above measurement method is consistent with the real human facial feature data, and can accurately reflect The human face shape, however, the ratio of the face image taken normally to the user's real face is not 1:1, so real human face feature data can be obtained by scaling the face image or scaling the measurement data. In an application manner as shown in FIG. 2, the glasses measuring and matching device needs to cooperate with a measurement position identifier A, which may be a measurement line or a measurement point, and is spaced apart from the image acquisition unit 10 by a predetermined interval. The distance S1, the head holder described above can be placed at the position, and when the parameters such as the focal length of the image acquisition unit 10 are constant, the ratio of the face image taken by the user at the measurement position marker to the real face shape is the same. The measuring unit 30 can directly measure the real human facial feature data. Or in some embodiments, the measuring unit 30 further includes a scaling module, and the ratio of the facial image taken by the user at the measurement position identifier to the real facial shape is other ratio, and the scaling module can directly measure the facial image according to a preset scaling ratio. After the data is processed, the real user's facial feature data is obtained. For example, as shown in FIG. 3, a certain measurement position identifier B and the image acquisition unit 10 are separated by a predetermined distance S2, and the face obtained by the user at the position is taken. When the ratio of the image to the real facial shape is 2, the scaling module can divide the data obtained by directly measuring the facial image by 2 to obtain the real facial feature data of the user.

The matching unit 40 is configured to match the measured human facial feature data to obtain the user's glasses parameters. In the specific matching process, the measured facial feature data of the human body can be automatically converted into the glasses parameters matching the data by means of a query form or by using software, and the matching relationship between the facial feature data of the human body and the glasses parameters is empirically obtained. The glasses parameters can determine the glasses that are most suitable for the user to wear. For convenience, the result output unit 50 can also use the voice or display screen to output the glasses parameters for the user's reference.

As shown in FIG. 2, the manner of using the above glasses measuring and matching device to match the user includes the following steps:

Step S101: The image acquisition unit is a camera, and the user needs to stand at the set measurement position identifier, and is separated from the camera by a predetermined distance.

Step S102: Positioning the front side of the user with the head holder at the measurement position mark to avoid offset or rotation of the position.

Step S103: The camera captures the front image of the user and saves it in the camera, and the ratio of the captured front image to the real facial shape of the user is 1:1.

Step S104: The side of the user is then positioned by the head holder to avoid offset or rotation of the position.

Step S105: The camera captures the side image of the user and saves it in the camera, and the ratio of the captured side image to the real facial shape of the user is also 1:1.

Step S106: The front and side images are measured by the measuring unit to obtain the facial feature data of the user.

Step S107: Match the facial feature data of the human body to obtain the glasses parameters of the corresponding user. After the measurement, manual reading can be used, and the obtained facial facial feature data can be artificially matched in the preset table to obtain corresponding eyeglass parameters, or can be automatically input into the matching unit for automatic matching.

Step S108: outputting the glasses parameters by using voice or display screen, for example, displaying matching glasses parameters on the display screen: “According to ergonomics, you are most suitable for wearing: the frame width is 54 mm; the center beam is 18 mm wide; the temple length is 139 mm. Glasses with a nose pad width of 20mm (the above data are allowed for +_2mm), you are welcome to start shopping."

Embodiment 2:

The glasses measuring and matching device and method of the first embodiment can be used in a physical environment such as an optical shop, and the glasses measuring and matching device and method of the embodiment can extend the traditional glasses measuring and matching to the e-commerce field by means of network communication technology. To enable the glasses provider on the server side to perform network optician for the users on the client side, and the user can purchase comfortable and even beautiful glasses without leaving the house, thus further providing users with time and space convenience while reducing purchases. cost.

As shown in FIG. 5, the glasses measuring and matching device of the embodiment includes a server and one or more clients at different positions, wherein the image obtaining unit 10 is disposed at each client, for example, a client computer of the user. The camera unit with a separate configuration; the storage unit 20, the measuring unit 30 and the matching unit 40 are all disposed at the server end, for example, can be installed in the service provider computer of the glasses supplier in the form of software, and the result output unit 50 can be set according to specific needs. Client or server.

The image acquisition unit 10, the storage unit 20, the measurement unit 30, the matching unit 40, and the result output unit 50 of the present embodiment are used in the same manner as the first embodiment. The difference between the embodiment and the first embodiment lies in the image acquisition unit 10 and the storage. The units 20 are connected by a communication network. For example, the communication network may be a traditional Internet network. After a certain image acquisition unit 10 obtains a facial image of the user by taking a photo, the facial image may be transmitted to the storage by using a certain communication link. Unit 20 is such that it stores, measures, matches, and the like. Finally, the user's glasses parameters can be output on the client, or can be fed back to the client for reference by the communication network.

The method for performing network optician on the user by using the above glasses measuring and matching device includes the following steps:

First, the image acquisition unit 10 of the client is a camera attached to the computer, and the user needs to be separated from the camera by a distance according to the requirements of the glasses supplier (the distance between the captured facial image and the user's real facial shape) a predetermined ratio, for example 1:1), to take a self-photograph to obtain a facial image, and then transmit the facial image to the service provider of the glasses supplier by using a network; or when the user transmits the video data with the facial image to the server in real time for the glasses When the supplier views through the video window, the glasses supplier can capture the user's facial image.

Then, the server computer uses the measuring unit to measure the front and side images to obtain the facial features data of the user. When the ratio between the captured facial image and the real facial shape of the user is not 1:1, the measuring unit also performs data on the data. The scaling process finally obtains the real user's facial feature data.

Then, the server computer uses the matching unit to match the facial feature data of the human body to obtain the corresponding glasses parameters of the user. After the measurement, manual reading can be used, and the obtained facial facial feature data can be artificially matched in the preset table to obtain corresponding eyeglass parameters, or can be automatically input into the matching unit for automatic matching.

Finally, the server computer uses the voice or display to output the glasses parameters, and transmits the eye parameters to the client computer through the network, and finally displays the matching glasses parameters on the display screen of the client computer: "According to ergonomic principles, You are most suitable for wearing: glasses frame width 54mm; center beam width 18mm; temple length 139mm; nose pad width 20mm (the above data are allowed + 2mm) glasses, you are welcome to start shopping." Based on these parameters, users can also In the range of glasses that meet the specifications of the wearer, the frame model displayed by the picture is selected to have a personalized frame color, frame shape, frame material, and the like.

The glasses measuring and matching device, the glasses measuring and matching server and the glasses measuring and matching method measure the facial feature data of the user by photographing the facial image of the user, and obtain the matching eye parameters, thereby enabling the user to select the suitable user quickly and conveniently. Wearing glasses, including myopia glasses, reading glasses, sunglasses, etc., to avoid a lot of time when users choose glasses to try on a variety of glasses, especially for children and other users who are not sensitive to try-on, provide a scientific and reasonable The choice of glasses.

The above is a further detailed description of the present invention in connection with the specific embodiments, and the specific embodiments of the present invention are not limited to the description. It will be apparent to those skilled in the art that the present invention may be made without departing from the spirit and scope of the invention.

Claims

A glasses measuring and matching device, comprising:

An image obtaining unit, configured to acquire a facial image of the user;

a storage unit, configured to store the acquired facial image;

a measuring unit, configured to measure the stored facial image, thereby obtaining human facial feature data of the user;

And a matching unit, configured to match the facial feature data of the human body to obtain a glasses parameter of the user.
The glasses measuring and matching device according to claim 1, wherein the facial image comprises a front image and a side image, the human facial feature data comprising two pupil spacings, a spacing between the ear bends and the eye planes, and At least one of the widths of the bridges, the lens parameters including at least one of a frame width, a temple length, and a nose pad spacing.
The glasses measuring and aligning apparatus according to claim 1, further comprising a result output unit coupled to said matching unit for outputting said glasses parameters using voice or a display screen.
The spectacles measuring and dispensing apparatus according to claim 1, wherein the measuring unit further comprises a scaling module, configured to process the data obtained by directly measuring the facial image according to a preset scaling ratio, and obtain the User's facial features data.
The glasses measuring and matching device according to any one of claims 1 to 4, further comprising a measurement position indicator spaced apart from the image acquisition unit by a predetermined distance.
A spectacles measuring device according to any one of claims 1 to 4, further comprising a head holder, the head holder including a first fixing portion for positioning a front side of the user and a second fixing portion that positions the side of the user.
The glasses measuring and matching device according to any one of claims 1 to 4, wherein the glasses measuring and matching device comprises a server and at least one client, and the image obtaining unit is disposed at the client, The storage unit, the measuring unit and the matching unit are all disposed at the server end, and the image obtaining unit and the storage unit are connected through a network.
A glasses measuring and matching server, characterized in that it comprises:

a storage unit, configured to store a facial image of a user transmitted by at least one client;

a measuring unit, configured to measure the stored facial image, thereby obtaining human facial feature data of the user;

And a matching unit, configured to match the facial feature data of the human body to obtain a glasses parameter of the user.
A method for measuring and matching glasses, comprising the steps of:

A: Acquire a user's face image and store it;

B: measuring the stored facial image, thereby obtaining human facial feature data of the user;

C: Matching the facial feature data of the human body to obtain the glasses parameters of the user.
The method for measuring and matching glasses according to claim 9, The method further includes the step D: outputting the glasses parameters by using a voice or a display screen.