CN1545329A - 一种视频图像的色彩瞬态增强系统与方法 - Google Patents
一种视频图像的色彩瞬态增强系统与方法 Download PDFInfo
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- CN1545329A CN1545329A CNA2003101085117A CN200310108511A CN1545329A CN 1545329 A CN1545329 A CN 1545329A CN A2003101085117 A CNA2003101085117 A CN A2003101085117A CN 200310108511 A CN200310108511 A CN 200310108511A CN 1545329 A CN1545329 A CN 1545329A
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Images
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/73—Deblurring; Sharpening
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/20—Image enhancement or restoration using local operators
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/90—Dynamic range modification of images or parts thereof
- G06T5/92—Dynamic range modification of images or parts thereof based on global image properties
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/646—Circuits for processing colour signals for image enhancement, e.g. vertical detail restoration, cross-colour elimination, contour correction, chrominance trapping filters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10016—Video; Image sequence
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10024—Color image
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
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- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20172—Image enhancement details
- G06T2207/20192—Edge enhancement; Edge preservation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/80—Camera processing pipelines; Components thereof
- H04N23/84—Camera processing pipelines; Components thereof for processing colour signals
- H04N23/86—Camera processing pipelines; Components thereof for processing colour signals for controlling the colour saturation of colour signals, e.g. automatic chroma control circuits
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Processing Of Color Television Signals (AREA)
- Image Processing (AREA)
Abstract
Description
AUCIS=平均U色度值递增特征值(average U chrominance increment sum) AUCDS=平均U色度值递减特征值(average U chrominance decrement sum) AVCIS=平均V色度值递增特征值(average V chrominance increment sum) AVCDS=平均V色度值递减特征值(average V chrominance decrement sum) AUC4 =色彩瞬态检测窗口中当前像素所在列的平均U色度值(average U chrominance value of the current pixel column in the transient detection window) AVC4 =色彩瞬态检测窗口中当前像素所在列的平均V色度值(average V chrominance value of the current pixel column in the transient detection window) UC4 =当前像素的U色度值(U chrominance value of the current pixel) VC4 =当前像素的V色度值(V chrominance value of the current pixel) ARSUC=平均右侧U色度值(average right side U chrominance) ALSUC=平均左侧U色度值(average left side U chrominance) ARSVC=平均右侧V色度值(average right side V chrominance) ALSVC=平均左侧V色度值(average left side V chrominance) CCIT =色彩瞬态阈值(chrominance color improvement threshold) IUC =色彩瞬态增强U色度值(improved U chrominance) IVC =色彩瞬态增强V色度值(improved V chrominance) 如果 ((AUCIS>=CCIT)或(AUCDS>=CCIT))且 ((AVCIS>=CCIT)或(AVCDS>=CCIT)]) 那么 { 如果 ABS(AUC4-ALSUC)<ABS(AUC4-ARSUC)且 ABS(AVC4-ALSVC)<ABS(AVC4-ARSVC)那么 { IUC=ALSUC <!-- SIPO <DP n="17"> --> <dp n="d17"/> IVC=ALSVC } 否则 如果ABS(AUC4-ALSUC)>ABS(AUC4-ARSUC)且 ABS(AVC4-ALSVC)>ABS(AVC4-ARSVC)那么 { IUC=ARSUC IVC=ARSVC } 否则 { IUC=UC4 IVC=VC4 } } 否则 { IUC=UC4 IVC=VC4 }
IUC =色彩瞬态增强U色度值(improved U chrominance) IVC =色彩瞬态增强V色度值(improved V chrominance) C_MAX=视频系统最大色度值(maximum chrominance value) C_MIN=视频系统最小色度值(minimum chrominance value) BSEF =基本色饱和度增强因子(base saturation enhancement factor) INDEX=查找表索引(index to a lookup table) TSEF =列表色饱和度增强因子(tabled saturation enhancement factor) (由一个以INDEX为索引的查找表中得到 from a lookup table indexed by INDEX) INDEX=max(abs(IUC),abs(IVC)) 如果 (INDEX>=C_MAX) 那么 { INDEX=C_MAX SSEF=1 } 否则 如果(INDEX*BSEF≤C_MAX) 那么 { SSEF=BSEF } 否则 { SSEF=TSEF }
Claims (28)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200310108511.7A CN1279765C (zh) | 2003-11-10 | 2003-11-10 | 一种视频图像的色彩瞬态增强系统与方法 |
US10/839,740 US7532255B2 (en) | 2003-11-10 | 2004-05-04 | Color transient improvement unit and method to reduce blurring at color transients in video images |
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CN200310108511.7A CN1279765C (zh) | 2003-11-10 | 2003-11-10 | 一种视频图像的色彩瞬态增强系统与方法 |
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CN1545329A true CN1545329A (zh) | 2004-11-10 |
CN1279765C CN1279765C (zh) | 2006-10-11 |
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US (1) | US7532255B2 (zh) |
CN (1) | CN1279765C (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102710944A (zh) * | 2012-05-16 | 2012-10-03 | 上海高清数字科技产业有限公司 | 亮色同步瞬态提升的系统和方法 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7271851B2 (en) * | 2003-01-16 | 2007-09-18 | Samsung Electronics Co., Ltd. | Adaptive color transient improvement |
US8570341B1 (en) * | 2007-12-07 | 2013-10-29 | Ipera Technology, Inc. | Method and system for enhancing color saturation |
KR20100082406A (ko) * | 2009-01-09 | 2010-07-19 | 삼성전자주식회사 | Fpga간 저전압 차등 신호의 샘플링 포인트 설정 방법 및 이를 위한 장치 |
US9172960B1 (en) * | 2010-09-23 | 2015-10-27 | Qualcomm Technologies, Inc. | Quantization based on statistics and threshold of luminanceand chrominance |
US10298932B1 (en) * | 2015-03-25 | 2019-05-21 | Amazon Technologies, Inc. | Compression encoding of images |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0805603A1 (en) * | 1996-01-11 | 1997-11-05 | Texas Instruments Incorporated | Improvements in or relating to signal processing circuits |
DE19722358A1 (de) * | 1997-05-28 | 1998-12-03 | Thomson Brandt Gmbh | Verfahren zur Bearbeitung von Übergangsbereichen in einem Bildsignal |
US6421462B1 (en) * | 1998-02-06 | 2002-07-16 | Compaq Computer Corporation | Technique for differencing an image |
US6795083B2 (en) * | 2001-06-19 | 2004-09-21 | Smartasic, Inc. | Color enhancement of analog video for digital video systems |
US7289163B2 (en) * | 2003-04-28 | 2007-10-30 | Samsung Electronics Co., Ltd. | Method and apparatus for adjusting color edge center in color transient improvement |
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2003
- 2003-11-10 CN CN200310108511.7A patent/CN1279765C/zh not_active Expired - Lifetime
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- 2004-05-04 US US10/839,740 patent/US7532255B2/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102710944A (zh) * | 2012-05-16 | 2012-10-03 | 上海高清数字科技产业有限公司 | 亮色同步瞬态提升的系统和方法 |
Also Published As
Publication number | Publication date |
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US20050099536A1 (en) | 2005-05-12 |
US7532255B2 (en) | 2009-05-12 |
CN1279765C (zh) | 2006-10-11 |
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