CN1655626A - 裁剪像素值的方法和系统 - Google Patents
裁剪像素值的方法和系统 Download PDFInfo
- Publication number
- CN1655626A CN1655626A CNA2005100071968A CN200510007196A CN1655626A CN 1655626 A CN1655626 A CN 1655626A CN A2005100071968 A CNA2005100071968 A CN A2005100071968A CN 200510007196 A CN200510007196 A CN 200510007196A CN 1655626 A CN1655626 A CN 1655626A
- Authority
- CN
- China
- Prior art keywords
- pixel
- color space
- subspace
- color
- brightness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/46—Colour picture communication systems
- H04N1/56—Processing of colour picture signals
- H04N1/60—Colour correction or control
- H04N1/6002—Corrections within particular colour systems
- H04N1/6005—Corrections within particular colour systems with luminance or chrominance signals, e.g. LC1C2, HSL or YUV
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/46—Colour picture communication systems
- H04N1/56—Processing of colour picture signals
- H04N1/60—Colour correction or control
- H04N1/6058—Reduction of colour to a range of reproducible colours, e.g. to ink- reproducible colour gamut
Abstract
Description
有效裁剪t(y,u,v){ ty=MAX(*y,16)-16;//注意y的有用范围为16-235 tyx=219.0-ty; if(tyx<0.0){tyx=0.0;} tu=u-128; tv=u-128; ty+=0.5; tyx+=0.5; //clip U if(tu>0){ if(ty<25){//“25”是图2中的点“J” if(tu>4.5*ty)) {tu=4.5*ty;}//斜线A } else{ if(tu>(0.58*tyx))(tu=0.58*tyx;}//斜线B } } else{ if(tyx<25){ if(-tu>(4.5*tyx)) (tu=-4.5*tyx;} } else{ if(-tu>(0.58*ty)) {tu=-0.58*ty;} } } //裁剪V与裁剪U相似,只是系数不同 {...} u=tu+128; v=tv+128; }
Claims (10)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US54069904P | 2004-01-30 | 2004-01-30 | |
US60/540,699 | 2004-01-30 | ||
US10/968,416 US8085277B2 (en) | 2004-01-30 | 2004-10-19 | System and method for clipping values of pixels in one color space so not to exceed the limits of a second color space |
US10/968,416 | 2004-10-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1655626A true CN1655626A (zh) | 2005-08-17 |
CN1655626B CN1655626B (zh) | 2012-03-21 |
Family
ID=34657365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2005100071968A Expired - Fee Related CN1655626B (zh) | 2004-01-30 | 2005-01-28 | 裁剪像素值的方法和系统 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8085277B2 (zh) |
EP (1) | EP1560417A3 (zh) |
CN (1) | CN1655626B (zh) |
TW (1) | TWI260168B (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101873502B (zh) * | 2009-04-24 | 2015-08-19 | 晨星软件研发(深圳)有限公司 | 色彩空间转换电路及方法 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006106457A1 (en) * | 2005-04-04 | 2006-10-12 | Koninklijke Philips Electronics N.V. | Method of converting signals for multi-primary color display |
US7554557B2 (en) * | 2006-03-28 | 2009-06-30 | Silicon Integrated Systems Corp. | Device and method for image compression and decompression |
TW200820767A (en) | 2006-06-26 | 2008-05-01 | Genesis Microchip Inc | Universal, highly configurable video and graphic measurement device |
US7826680B2 (en) | 2006-06-26 | 2010-11-02 | Genesis Microchip Inc. | Integrated histogram auto adaptive contrast control (ACC) |
US7920755B2 (en) | 2006-06-26 | 2011-04-05 | Genesis Microchip Inc. | Video content detector |
US7881547B2 (en) | 2006-07-28 | 2011-02-01 | Genesis Microchip Inc. | Video window detector |
US9736335B2 (en) | 2015-04-15 | 2017-08-15 | Apple Inc. | Techniques for advanced chroma processing |
US11838522B2 (en) * | 2020-12-29 | 2023-12-05 | Tencent America LLC | Method and apparatus for video coding |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5233684A (en) * | 1990-06-26 | 1993-08-03 | Digital Equipment Corporation | Method and apparatus for mapping a digital color image from a first color space to a second color space |
US5732205A (en) * | 1994-12-30 | 1998-03-24 | Intel Corporation | Color conversion using 4.5 bit palette |
US5818613A (en) * | 1995-12-04 | 1998-10-06 | Silicon Graphics, Inc. | System and method for color space conversion |
US5946113A (en) * | 1996-03-29 | 1999-08-31 | Silicon Graphics, Inc. | System and method for color space conversion |
US5867169A (en) * | 1996-04-17 | 1999-02-02 | Pixar | Method and apparatus for manipulating color values in a computer graphics system |
CN1066898C (zh) * | 1997-03-04 | 2001-06-06 | 华邦电子股份有限公司 | 一种矩阵运算实现色彩空间转换的方法及装置 |
TW395120B (en) * | 1998-07-23 | 2000-06-21 | Winbond Electronics Corp | The device and method using the preset code and the compensation code to transform the color space |
US6326977B1 (en) * | 1998-11-03 | 2001-12-04 | Sharp Laboratories Of America, Inc. | Rendering of YCBCR images on an RGS display device |
US6510242B1 (en) * | 1999-10-26 | 2003-01-21 | Sharp Laboratories Of America, Inc. | Color image enhancement during YCbCr to RGB color conversion |
US6735334B2 (en) * | 1999-10-29 | 2004-05-11 | Canon Kabushiki Kaisha | Optimizing processing gamuts for color conversion chains |
JP2001292890A (ja) * | 2000-04-11 | 2001-10-23 | Nakahara Sanpodo:Kk | 複数供養壇 |
US6707459B1 (en) * | 2001-02-01 | 2004-03-16 | Apple Computer, Inc. | Adjustment of color values for optimized image processing |
EP1407445B1 (en) * | 2001-06-07 | 2010-07-21 | Genoa Color Technologies Ltd. | System and method of data conversion for wide gamut displays |
JP4065482B2 (ja) * | 2001-09-18 | 2008-03-26 | キヤノン株式会社 | 画像データ処理方法、装置、記憶媒体、及びプログラム |
JP4061907B2 (ja) * | 2002-01-15 | 2008-03-19 | セイコーエプソン株式会社 | 画像処理済み画像データの出力および保存 |
US7057671B2 (en) * | 2002-01-30 | 2006-06-06 | At & T Corp | Image and video processing with chrominance attenuation |
US6825853B2 (en) * | 2002-03-26 | 2004-11-30 | Lucent Technologies Inc. | Apparatus and method for color space conversion in video images |
KR20040055060A (ko) * | 2002-12-20 | 2004-06-26 | 삼성전자주식회사 | 색신호 처리장치 및 그 처리방법 |
US7433085B2 (en) * | 2003-04-15 | 2008-10-07 | Lexmark International, Inc. | Intelligent hardware for detecting color value of an image |
JP2005252393A (ja) * | 2004-03-01 | 2005-09-15 | Canon Inc | 画像処理装置及び方法、並びにコンピュータプログラム及びコンピュータ可読記憶媒体 |
-
2004
- 2004-10-19 US US10/968,416 patent/US8085277B2/en not_active Expired - Fee Related
-
2005
- 2005-01-14 EP EP05000719A patent/EP1560417A3/en not_active Ceased
- 2005-01-28 CN CN2005100071968A patent/CN1655626B/zh not_active Expired - Fee Related
- 2005-01-28 TW TW094102642A patent/TWI260168B/zh not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101873502B (zh) * | 2009-04-24 | 2015-08-19 | 晨星软件研发(深圳)有限公司 | 色彩空间转换电路及方法 |
Also Published As
Publication number | Publication date |
---|---|
CN1655626B (zh) | 2012-03-21 |
EP1560417A3 (en) | 2010-01-20 |
EP1560417A2 (en) | 2005-08-03 |
US8085277B2 (en) | 2011-12-27 |
US20050168477A1 (en) | 2005-08-04 |
TW200541350A (en) | 2005-12-16 |
TWI260168B (en) | 2006-08-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1655626A (zh) | 裁剪像素值的方法和系统 | |
US6608926B1 (en) | Image processing method, image processing apparatus and recording medium | |
JP5795548B2 (ja) | 拡張rgb空間へのトーンマッピングを用いた高ダイナミックレンジ画像の処理方法 | |
US20220245775A1 (en) | Tone mapping method and electronic device | |
JPH09149257A (ja) | 画像コントラスト強化方法 | |
JP2008527852A (ja) | ディジタル・カメラの画像のホワイト・バランス補正 | |
WO2021073304A1 (zh) | 一种图像处理的方法及装置 | |
JP5847341B2 (ja) | 画像処理装置、画像処理方法、プログラム、及び記録媒体 | |
US20050013502A1 (en) | Method of improving image quality | |
KR101225059B1 (ko) | 장치 적응적 칼라 향상 장치 및 방법 | |
US20130195353A1 (en) | Digital Image Color Correction | |
JP4215014B2 (ja) | 画像処理装置および画像処理プログラム | |
KR101279576B1 (ko) | 디지털 영상 처리 장치에서의 파노라마 영상 생성 방법 | |
JP2003298858A (ja) | 改善されたトーンスケール再現のためのディジタルカラー画像処理方法 | |
TWI544451B (zh) | 影像處理方法 | |
KR101634652B1 (ko) | 영상의 대비 강화 방법 및 장치 | |
US10855886B2 (en) | Cubiform method | |
CN109600596B (zh) | 一种非线性无色恒常的白平衡方法 | |
JP6413210B2 (ja) | 画像処理装置、撮像装置およびプログラム | |
US8018468B2 (en) | Image signal processor, image signal processing method for use in the same, and program | |
US11184593B2 (en) | Image capturing device and method | |
KR100477657B1 (ko) | 디지털 화질 개선 방법 | |
US20230005110A1 (en) | Information processing apparatus, information processing method, and storage medium for storing program | |
US6961068B2 (en) | Method for converting monochrome images | |
CN117854422A (zh) | 获取校正系数的方法、装置、终端设备、控制设备及介质 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20180503 Address after: Singapore Singapore Patentee after: Avago Technologies Fiber IP Singapore Pte. Ltd. Address before: california Patentee before: Zyray Wireless Inc. |
|
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20190829 Address after: Singapore Singapore Patentee after: Annwa high tech Limited by Share Ltd Address before: Singapore Singapore Patentee before: Avago Technologies Fiber IP Singapore Pte. Ltd. |
|
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120321 Termination date: 20210128 |