CA2432383A1 - System and method for employing non-alpha channel image data in an alpha-channel-aware environment - Google Patents
System and method for employing non-alpha channel image data in an alpha-channel-aware environment Download PDFInfo
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- CA2432383A1 CA2432383A1 CA002432383A CA2432383A CA2432383A1 CA 2432383 A1 CA2432383 A1 CA 2432383A1 CA 002432383 A CA002432383 A CA 002432383A CA 2432383 A CA2432383 A CA 2432383A CA 2432383 A1 CA2432383 A1 CA 2432383A1
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- pixel data
- alpha
- value
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T15/00—3D [Three Dimensional] image rendering
- G06T15/50—Lighting effects
- G06T15/503—Blending, e.g. for anti-aliasing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/40—Filling a planar surface by adding surface attributes, e.g. colour or texture
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
Abstract
An image rendered by a non-alpha-channel-aware application is employed in an alpha-channel-aware environment. The pixel data file to be written to by the non- alpha-channel-aware application is initialized by setting the alpha value fo r each pixel to 1. The alpha-channel-aware application then writes to the initializ ed pixel data file, changing some or all pixel data. The alpha value for each pixel i s then decremented by 1 (modulo 256) making the changed pixels opaque and the unchanged pixels transparent.
Claims (19)
1. A method for using an image in a pixel data file rendered by a non-alpha-channel-aware application in a alpha-channel-aware environment, where (i) the non-alpha-channel-aware application writes pixel data values to an existing pixel data file of pixel data values; (ii) each pixel data value includes an n-bit alpha value and corresponds to a pixel location; (iii) the non-alpha-channel-aware application sets the alpha value of the pixel data value to 0 for each pixel for which a pixel data value is written by the application to the pixel data file; and (iv) the alpha-channel-aware environment is a graphic environment in which each alpha values is used to set transparency of the corresponding pixel when the image in the pixel data file is displayed in the foreground of other image data, with an alpha value of zero corresponding to a full transparency and increasing alpha values corresponding to increasing levels of opacity, comprising:
(a) initializing the alpha value of the pixel data value for each pixel data value in the pixel data file to 1;
(b) executing the non-alpha-channel-aware application on the pixel data file;
(c) changing the alpha value of each pixel data value by changing the alpha value of the pixel data values in the pixel data file to 0 for each pixel data value in the pixel data file with an alpha value of 1, and changing the alpha value of the pixel data value in the pixel data file to the alpha value for full opacity for each pixel data value with an alpha value of 0; and (d) displaying the pixel data file in the alpha-channel-aware environment.
(a) initializing the alpha value of the pixel data value for each pixel data value in the pixel data file to 1;
(b) executing the non-alpha-channel-aware application on the pixel data file;
(c) changing the alpha value of each pixel data value by changing the alpha value of the pixel data values in the pixel data file to 0 for each pixel data value in the pixel data file with an alpha value of 1, and changing the alpha value of the pixel data value in the pixel data file to the alpha value for full opacity for each pixel data value with an alpha value of 0; and (d) displaying the pixel data file in the alpha-channel-aware environment.
2. The method of claim 1, where said changing of the alpha value of the pixel data value comprises decrementing the alpha value of the pixel data value for each pixel data value in the pixel data file by 1, modulo 2".
3. The method of claim 2, where n is selected from a group consisting of 1 and 8.
4. At least one of an operating system, a computer-readable medium having stored thereon a plurality of computer-executable instructions, a co-processing device, a computing device, and a modulated data signal carrying computer executable instructions for performing the method of claim 1.
5. A method for using an image in a pixel data file rendered by a non-alpha-channel-aware application in a alpha-channel-aware environment, where (i) the non-alpha-channel-aware application writes pixel data values to an existing pixel data file of pixel data values; (ii) each pixel data value includes an n-bit alpha value and corresponds to a pixel location; (iii) the non-alpha-channel-aware application sets the alpha value of the pixel data value to m for each pixel for which a pixel data value is written by the application to the pixel data file; and (iv) the alpha-channel-aware environment is a graphic environment in which each alpha value is used to set transparency of the corresponding pixel when the image in the pixel data file is displayed in the foreground of other image data, with an alpha value of zero corresponding to a full transparency and increasing alpha values corresponding to increasing levels of opacity, comprising:
(a) initializing the alpha value of the pixel data value for each pixel data value in the pixel data file to m+1;
(b) executing the non-alpha-channel-aware application on the pixel data file; and (c) changing the alpha value of each pixel data value by changing the alpha value of the pixel data in the pixel data file to 0 for each pixel data value in the pixel data file with an alpha value; of m and changing the alpha value of the pixel data value in the pixel data file to the alpha value for full opacity for each pixel data value with an alpha value of 0; and (d) displaying the pixel data file in the alpha-channel-aware environment.
(a) initializing the alpha value of the pixel data value for each pixel data value in the pixel data file to m+1;
(b) executing the non-alpha-channel-aware application on the pixel data file; and (c) changing the alpha value of each pixel data value by changing the alpha value of the pixel data in the pixel data file to 0 for each pixel data value in the pixel data file with an alpha value; of m and changing the alpha value of the pixel data value in the pixel data file to the alpha value for full opacity for each pixel data value with an alpha value of 0; and (d) displaying the pixel data file in the alpha-channel-aware environment.
6. The method of claim 5, where said changing of the alpha value of each pixel data value comprises decrementing the alpha value of the pixel data value for each pixel data value in the pixel data file by m+1 modulo 2n.
7. At least one of an operating system, a computer-readable medium having stored thereon a plurality of computer-executable instructions, a co-processing device, a computing device, and a modulated data signal carrying computer executable instructions for performing the method of claim 5.
8. A method for using a non-alpha-channel-aware application in a alpha-channel-aware environment, where (i) the non-alpha-channel-aware application writes pixel data values to an existing pixel data file of pixel data values;
(ii) each pixel data value includes an n-bit alpha value and corresponds to a pixel location;
(iii) the non-alpha-channel-aware application sets the alpha value of the pixel data value to m for each pixel for which a pixel data value is written by the application to the pixel data file; (iv) the alpha-channel-aware environment is a graphic environment in which each alpha value is used to set transparency of the corresponding pixel when the image in the pixel data file is displayed in the foreground of other image data, with an alpha value of zero corresponding to a full transparency and increasing alpha values corresponding to increasing levels of opacity; and (v) the alpha value for a desired opacity for pixels written by the non-alpha-channel-aware application is p, comprising:
(a) initializing the alpha value of the pixel data value for all pixel data value in the pixel data file to 2n-p+m;
(b) executing the non-alpha-channel-aware application on the pixel data file;
(c) changing the alpha value of each pixel data value by changing the alpha value of the pixel data value in the pixel data file to m for each pixel data value in the pixel data file with an alpha value of 2n-p+m and changing the alpha value of the pixel data value in the pixel data file to p for each pixel data value with an alpha value of m; and (d) displaying the pixel data file in the alpha-channel-aware environment.
(ii) each pixel data value includes an n-bit alpha value and corresponds to a pixel location;
(iii) the non-alpha-channel-aware application sets the alpha value of the pixel data value to m for each pixel for which a pixel data value is written by the application to the pixel data file; (iv) the alpha-channel-aware environment is a graphic environment in which each alpha value is used to set transparency of the corresponding pixel when the image in the pixel data file is displayed in the foreground of other image data, with an alpha value of zero corresponding to a full transparency and increasing alpha values corresponding to increasing levels of opacity; and (v) the alpha value for a desired opacity for pixels written by the non-alpha-channel-aware application is p, comprising:
(a) initializing the alpha value of the pixel data value for all pixel data value in the pixel data file to 2n-p+m;
(b) executing the non-alpha-channel-aware application on the pixel data file;
(c) changing the alpha value of each pixel data value by changing the alpha value of the pixel data value in the pixel data file to m for each pixel data value in the pixel data file with an alpha value of 2n-p+m and changing the alpha value of the pixel data value in the pixel data file to p for each pixel data value with an alpha value of m; and (d) displaying the pixel data file in the alpha-channel-aware environment.
9. The method of claim 8, where said changing of the alpha value of the pixel data value comprises incrementing the alpha value of the pixel data value for all pixel data value in the pixel data file by p-m, modulo 2".
10. The method of claim 8, where said changing of the alpha value of the pixel data value comprises decrementing the alpha value of the pixel data value for all pixel data value in the pixel data file by m-p, modulo 2".
11. The method of claim 8, where at least one of p or m is zero.
12. At least one of an operating system, a computer readable medium having stored thereon a plurality of computer-executable instructions, a co-processing device, a computing device, and a modulated data signal carrying computer executable instructions for performing the method of claim 8.
13. A computer graphics system comprising computer executable modules for using an image in a pixel data file rendered by a non-alpha-channel-aware application in a alpha-channel-aware environment, where (i) the non-alpha-channel-aware application writes pixel data values to an existing pixel data file of pixel data values;
(ii) each pixel data value includes an n-bit alpha value and corresponds to a pixel location;
(iii) the non-alpha-channel-aware application sets the alpha value of the pixel data value to 0 for each pixel for which a pixel data value is written by the application to the pixel data file; and (iv) the alpha-channel-aware environment is a graphic environment in which each alpha values is used to set transparency of the corresponding pixel when the image in the pixel data file is displayed in the foreground of other image data, with an alpha value of zero corresponding to a full transparency and increasing alpha values corresponding to increasing levels of opacity, said computer modules comprising:
(a) means for initializing the alpha value of the pixel data value for each pixel data value in the pixel data file to 1;
(b) means for executing the non-alpha-channel-aware application on the pixel data file;
(c) means for changing the alpha value of each pixel data value by changing the alpha value of the pixel data values in the pixel data file to 0 for each pixel data value in the pixel data file with an alpha value of 1, and changing the alpha value of the pixel data value in the pixel data file to the alpha value for full opacity for each pixel data value with an alpha value of 0; and (d) means for displaying the pixel data file in the alpha-channel-aware environment.
(ii) each pixel data value includes an n-bit alpha value and corresponds to a pixel location;
(iii) the non-alpha-channel-aware application sets the alpha value of the pixel data value to 0 for each pixel for which a pixel data value is written by the application to the pixel data file; and (iv) the alpha-channel-aware environment is a graphic environment in which each alpha values is used to set transparency of the corresponding pixel when the image in the pixel data file is displayed in the foreground of other image data, with an alpha value of zero corresponding to a full transparency and increasing alpha values corresponding to increasing levels of opacity, said computer modules comprising:
(a) means for initializing the alpha value of the pixel data value for each pixel data value in the pixel data file to 1;
(b) means for executing the non-alpha-channel-aware application on the pixel data file;
(c) means for changing the alpha value of each pixel data value by changing the alpha value of the pixel data values in the pixel data file to 0 for each pixel data value in the pixel data file with an alpha value of 1, and changing the alpha value of the pixel data value in the pixel data file to the alpha value for full opacity for each pixel data value with an alpha value of 0; and (d) means for displaying the pixel data file in the alpha-channel-aware environment.
14. The computer graphics system of claim 13 where said means for changing the alpha value of the pixel data value comprises means for decrementing the alpha value of the pixel data value for each pixel data in the pixel data file by 1, modulo 2".
15. The method of claim 13 where n is selected from a group consisting of 1 and 8.
16. A computer graphics system comprising computer executable modules for using a non-alpha-channel-aware application in a alpha-channel-aware environment, where (i) the non-alpha-channel-aware application writes pixel data values to an existing pixel data file of pixel data values; (ii) each pixel data value includes an n-bit alpha value and corresponds to a pixel location; (iii) the non-alpha-channel-aware application sets the alpha value of the pixel data value to m for each pixel for which a pixel data value is written by the application to the pixel data file; (iv) the alpha-channel-aware environment is a graphic environment in which each alpha value is used to set transparency of the corresponding pixel when the image in the pixel data file is displayed in the foreground of other image data, with an alpha value of zero corresponding to a full transparency and increasing alpha values corresponding to increasing levels of opacity; and (v) the alpha value for a desired opacity for pixels written by the non-alpha-channel-aware application is p, said computer executable modules comprising:
(a) means for initializing the alpha value of the pixel data value for all pixel data value in the pixel data file to 2"-p+m;
(b) means for executing the non-alpha-channel-aware application on the pixel data file;
(c) means for changing the alpha value of each pixel data value by changing the alpha value of the pixel data value in the pixel data file to m for each pixel data value in the pixel data file with an alpha value of 2"-p+m and changing the alpha value of the pixel data value in the pixel data file to p for each pixel data value with an alpha value of m; and (d) means for displaying the pixel data file in the alpha-channel-aware environment.
(a) means for initializing the alpha value of the pixel data value for all pixel data value in the pixel data file to 2"-p+m;
(b) means for executing the non-alpha-channel-aware application on the pixel data file;
(c) means for changing the alpha value of each pixel data value by changing the alpha value of the pixel data value in the pixel data file to m for each pixel data value in the pixel data file with an alpha value of 2"-p+m and changing the alpha value of the pixel data value in the pixel data file to p for each pixel data value with an alpha value of m; and (d) means for displaying the pixel data file in the alpha-channel-aware environment.
17. The computer graphics system of claim 16, where said means for of changing the alpha value of the pixel data comprises means for incrementing the alpha value of the pixel data for all pixel data in the pixel data file by p-m, modulo 2".
18. The computer graphics system of claim 16, where said means for of changing the alpha value of the pixel data comprises means for incrementing the alpha value of the pixel data for all pixel data in the pixel data file by m-p, modulo 2".
19. The computer graphics system of claim 16, where at least one of p or m is zero.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/185,076 US6954215B2 (en) | 2002-06-28 | 2002-06-28 | System and method for employing non-alpha channel image data in an alpha-channel-aware environment |
| US10/185,076 | 2002-06-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2432383A1 true CA2432383A1 (en) | 2003-12-28 |
| CA2432383C CA2432383C (en) | 2012-01-03 |
Family
ID=27612985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2432383A Expired - Fee Related CA2432383C (en) | 2002-06-28 | 2003-06-13 | System and method for employing non-alpha channel image data in an alpha-channel-aware environment |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US6954215B2 (en) |
| EP (1) | EP1376473A3 (en) |
| JP (1) | JP4412580B2 (en) |
| KR (2) | KR100874800B1 (en) |
| CN (1) | CN1312632C (en) |
| AU (1) | AU2003204703B2 (en) |
| BR (1) | BR0302116A (en) |
| CA (1) | CA2432383C (en) |
| MX (1) | MXPA03005365A (en) |
| MY (1) | MY140706A (en) |
| NO (1) | NO330126B1 (en) |
| PL (1) | PL360235A1 (en) |
| RU (1) | RU2321891C2 (en) |
| TW (1) | TWI326056B (en) |
| ZA (1) | ZA200304642B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100612037B1 (en) * | 2004-12-24 | 2006-08-21 | 유은옥 | A auto balance high boing bar |
| US7492957B1 (en) * | 2005-08-29 | 2009-02-17 | Symantec Corporation | Using run length encoding to detect target images |
| US8189908B2 (en) * | 2005-09-02 | 2012-05-29 | Adobe Systems, Inc. | System and method for compressing video data and alpha channel data using a single stream |
| US8014615B2 (en) * | 2005-09-02 | 2011-09-06 | Adobe Systems Incorporated | System and method for decompressing video data and alpha channel data using a single stream |
| US20070219307A1 (en) * | 2006-03-17 | 2007-09-20 | Yong Yang | Emulsion polymer blend coating compositions and methods for increasing chalky substrate adhesion |
| US8717391B2 (en) * | 2010-11-19 | 2014-05-06 | Apple Inc. | User interface pipe scalers with active regions |
| CN102244784B (en) * | 2011-06-09 | 2014-03-26 | 杭州典能科技有限公司 | Method for compressing and displaying picture including transparent information |
| US10074203B2 (en) * | 2014-12-23 | 2018-09-11 | Synaptics Incorporated | Overlay for display self refresh |
| US10565739B2 (en) | 2017-12-29 | 2020-02-18 | Cerner Innovation, Inc. | Automated icon accessibility assessment algorithm and tool |
| US10796421B2 (en) | 2018-02-13 | 2020-10-06 | Adobe Inc. | Creating selective virtual long-exposure images |
| US10573052B2 (en) * | 2018-02-13 | 2020-02-25 | Adobe Inc. | Creating cinemagraphs with virtual long-exposure images |
| CN114286163B (en) * | 2021-12-24 | 2024-02-13 | 苏州亿歌网络科技有限公司 | Sequence chart recording method, device, equipment and storage medium |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5914725A (en) * | 1996-03-07 | 1999-06-22 | Powertv, Inc. | Interpolation of pixel values and alpha values in a computer graphics display device |
| GB2317292B (en) * | 1996-09-12 | 2000-04-19 | Discreet Logic Inc | Processing image data |
| US6128001A (en) * | 1997-04-04 | 2000-10-03 | Avid Technology, Inc. | Methods and apparatus for changing a color of an image |
| US5982381A (en) * | 1997-07-03 | 1999-11-09 | Microsoft Corporation | Method and apparatus for modifying a cutout image for compositing |
| US6771264B1 (en) * | 1998-08-20 | 2004-08-03 | Apple Computer, Inc. | Method and apparatus for performing tangent space lighting and bump mapping in a deferred shading graphics processor |
| AU2001261897B2 (en) | 2000-05-29 | 2004-12-16 | Canon Kabushiki Kaisha | A method for enabling file format compatibility |
-
2002
- 2002-06-28 US US10/185,076 patent/US6954215B2/en not_active Expired - Fee Related
-
2003
- 2003-05-20 PL PL03360235A patent/PL360235A1/en unknown
- 2003-06-10 TW TW092115758A patent/TWI326056B/en not_active IP Right Cessation
- 2003-06-10 BR BR0302116-5A patent/BR0302116A/en not_active IP Right Cessation
- 2003-06-11 RU RU2003117474/09A patent/RU2321891C2/en not_active IP Right Cessation
- 2003-06-11 JP JP2003167012A patent/JP4412580B2/en not_active Expired - Fee Related
- 2003-06-13 CA CA2432383A patent/CA2432383C/en not_active Expired - Fee Related
- 2003-06-13 EP EP03013555A patent/EP1376473A3/en not_active Withdrawn
- 2003-06-13 MX MXPA03005365A patent/MXPA03005365A/en active IP Right Grant
- 2003-06-13 MY MYPI20032225A patent/MY140706A/en unknown
- 2003-06-13 ZA ZA200304642A patent/ZA200304642B/en unknown
- 2003-06-13 KR KR1020030038201A patent/KR100874800B1/en not_active IP Right Cessation
- 2003-06-13 AU AU2003204703A patent/AU2003204703B2/en not_active Ceased
- 2003-06-17 CN CNB031493610A patent/CN1312632C/en not_active Expired - Fee Related
- 2003-06-17 NO NO20032747A patent/NO330126B1/en not_active IP Right Cessation
-
2008
- 2008-09-17 KR KR1020080090999A patent/KR100918532B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NO20032747D0 (en) | 2003-06-17 |
| JP2004038957A (en) | 2004-02-05 |
| TW200406716A (en) | 2004-05-01 |
| US6954215B2 (en) | 2005-10-11 |
| NO20032747L (en) | 2003-12-29 |
| CN1312632C (en) | 2007-04-25 |
| KR20080089560A (en) | 2008-10-07 |
| KR100918532B1 (en) | 2009-09-21 |
| EP1376473A2 (en) | 2004-01-02 |
| MY140706A (en) | 2010-01-15 |
| NO330126B1 (en) | 2011-02-21 |
| CN1471052A (en) | 2004-01-28 |
| RU2321891C2 (en) | 2008-04-10 |
| KR100874800B1 (en) | 2008-12-19 |
| MXPA03005365A (en) | 2004-01-22 |
| CA2432383C (en) | 2012-01-03 |
| US20040001071A1 (en) | 2004-01-01 |
| ZA200304642B (en) | 2004-07-06 |
| AU2003204703B2 (en) | 2009-10-08 |
| KR20040002549A (en) | 2004-01-07 |
| JP4412580B2 (en) | 2010-02-10 |
| PL360235A1 (en) | 2003-12-29 |
| AU2003204703A1 (en) | 2004-01-15 |
| EP1376473A3 (en) | 2005-12-28 |
| BR0302116A (en) | 2004-09-08 |
| TWI326056B (en) | 2010-06-11 |
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