IN2014DN08974A - - Google Patents
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- Publication number
- IN2014DN08974A IN2014DN08974A IN8974DEN2014A IN2014DN08974A IN 2014DN08974 A IN2014DN08974 A IN 2014DN08974A IN 8974DEN2014 A IN8974DEN2014 A IN 8974DEN2014A IN 2014DN08974 A IN2014DN08974 A IN 2014DN08974A
- Authority
- IN
- India
- Prior art keywords
- value
- jnd
- threshold
- gray level
- panel unit
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/20—Image enhancement or restoration using local operators
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
- G06T5/94—Dynamic range modification of images or parts thereof based on local image properties, e.g. for local contrast enhancement
-
- 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
- H04N1/40—Picture signal circuits
- H04N1/407—Control or modification of tonal gradation or of extreme levels, e.g. background level
-
- 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
- H04N9/69—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits for modifying the colour signals by gamma correction
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/10—Image enhancement or restoration using non-spatial domain filtering
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
- G09G2360/144—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light being ambient light
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Hardware Design (AREA)
- Image Processing (AREA)
- Picture Signal Circuits (AREA)
- Processing Of Color Television Signals (AREA)
- Facsimile Image Signal Circuits (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
[Problem] To correct a gray level so as to satisfy both a halo and a retinex operation effect. [Solution] A corresponding JND value is obtained for a brightness value in an obtained panel unit gray level. A pixel value corresponding to the JND value is obtained for each panel unit gray level (fig. 3B). A threshold (e) is obtained from an identifiable JND value for each panel unit gray level by inverse gamma correcting the ratio of said JND values to the maximum output value of the panel (fig. 3C). An approximate result from a linear function is calculated using the method of least squares (fig. 3D). The threshold (e) is identified as an increasing function of the pixel value on the basis of the number of allowable JND steps. The threshold (e) is changed using such a function. Hence it is possible to vary the threshold (e) according to a center pixel value.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012079738A JP5470415B2 (en) | 2012-03-30 | 2012-03-30 | Epsilon filter threshold determination method and low-pass filter coefficient determination method |
| PCT/JP2012/076108 WO2013145388A1 (en) | 2012-03-30 | 2012-10-09 | Gray-level correction method, threshold determination device for epsilon-filter, and method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IN2014DN08974A true IN2014DN08974A (en) | 2015-05-29 |
Family
ID=49258729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IN8974DEN2014 IN2014DN08974A (en) | 2012-03-30 | 2012-10-09 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US9336581B2 (en) |
| EP (1) | EP2833355B1 (en) |
| JP (1) | JP5470415B2 (en) |
| CN (1) | CN104246865B (en) |
| AU (1) | AU2012374716B2 (en) |
| IN (1) | IN2014DN08974A (en) |
| RU (1) | RU2611005C2 (en) |
| WO (1) | WO2013145388A1 (en) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5596075B2 (en) * | 2012-03-30 | 2014-09-24 | Ｅｉｚｏ株式会社 | Gradation correction apparatus or method |
| AU2014397095B2 (en) * | 2014-06-12 | 2018-07-05 | Eizo Corporation | Haze removal device and image generation method |
| WO2016013125A1 (en) * | 2014-07-25 | 2016-01-28 | Eizo株式会社 | Video conversion method, video conversion device, computer program for video conversion, video display system |
| US20160117993A1 (en) * | 2014-10-22 | 2016-04-28 | Pixtronix, Inc. | Image formation in a segmented display |
| JP2016086347A (en) * | 2014-10-28 | 2016-05-19 | 三星ディスプレイ株式會社Ｓａｍｓｕｎｇ Ｄｉｓｐｌａｙ Ｃｏ．，Ｌｔｄ． | Image processing system, image processing method and program |
| CN106157904B (en) * | 2015-04-22 | 2018-07-03 | 深圳市巨烽显示科技有限公司 | Liquid crystal display and its display auto-correction method and device |
| CN104992419A (en) * | 2015-07-08 | 2015-10-21 | 北京大学深圳研究生院 | Super pixel Gaussian filtering pre-processing method based on JND factor |
| WO2017085786A1 (en) * | 2015-11-17 | 2017-05-26 | Eizo株式会社 | Image converting method and device |
| US10755673B2 (en) | 2016-05-20 | 2020-08-25 | Schepens Eye Research Institute | Methods and systems for adjusting contrast in devices |
| CN107992182B (en) | 2017-12-05 | 2021-06-29 | 北京小米移动软件有限公司 | Method and device for displaying interface image |
| JP6970763B2 (en) * | 2018-02-14 | 2021-11-24 | Eizo株式会社 | Display system and program |
| CN108428436B (en) * | 2018-05-08 | 2019-12-10 | 京东方科技集团股份有限公司 | luminance compensation method, luminance compensation device, display device, and storage medium |
| KR102453070B1 (en) * | 2018-06-05 | 2022-10-07 | 에이조 가부시키가이샤 | Image processing apparatus and image processing program |
| CN109525847B (en) * | 2018-11-13 | 2021-04-30 | 华侨大学 | Just noticeable distortion model threshold calculation method |
| US11800056B2 (en) | 2021-02-11 | 2023-10-24 | Logitech Europe S.A. | Smart webcam system |
| US11800048B2 (en) | 2021-02-24 | 2023-10-24 | Logitech Europe S.A. | Image generating system with background replacement or modification capabilities |
| WO2022193102A1 (en) * | 2021-03-15 | 2022-09-22 | 京东方科技集团股份有限公司 | Method, apparatus and system for determining light leakage degree of display panel, and test fixture |
| CN116188282A (en) * | 2021-11-29 | 2023-05-30 | 中国移动通信有限公司研究院 | Image enhancement method, device, electronic device and readable storage medium |
| CN116977939B (en) * | 2023-08-16 | 2025-12-05 | 江苏中农物联网科技有限公司 | A smart monitoring system for aquaculture |
| CN117405363B (en) * | 2023-12-14 | 2024-03-01 | 东南大学 | Halation characterization method and system of Mini-LED partition backlight display |
| CN118762673B (en) * | 2024-09-05 | 2024-12-17 | 长春希达电子技术有限公司 | JND coefficient value range method and system |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0951532A (en) * | 1995-05-29 | 1997-02-18 | Matsushita Electric Ind Co Ltd | Distortion remover |
| DE69635101T2 (en) * | 1995-11-01 | 2006-06-01 | Canon K.K. | Method for extracting objects and image recording apparatus using this method |
| WO2001039495A1 (en) * | 1999-11-25 | 2001-05-31 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for gradation correction, and video display |
| JP4649781B2 (en) * | 2001-06-20 | 2011-03-16 | ソニー株式会社 | Image processing method and apparatus |
| US8374238B2 (en) * | 2004-07-13 | 2013-02-12 | Microsoft Corporation | Spatial scalability in 3D sub-band decoding of SDMCTF-encoded video |
| JP4523926B2 (en) * | 2006-04-05 | 2010-08-11 | 富士通株式会社 | Image processing apparatus, image processing program, and image processing method |
| JP4208909B2 (en) | 2006-08-24 | 2009-01-14 | 株式会社東芝 | Image processing device and photographing device |
| US8154628B2 (en) | 2006-09-14 | 2012-04-10 | Mitsubishi Electric Corporation | Image processing apparatus and imaging apparatus and method |
| KR100879536B1 (en) | 2006-10-30 | 2009-01-22 | 삼성전자주식회사 | Method and system for improving image quality |
| JP4281786B2 (en) * | 2006-11-20 | 2009-06-17 | ブラザー工業株式会社 | Image processing program and image processing apparatus |
| JP4746575B2 (en) * | 2007-03-16 | 2011-08-10 | 株式会社東芝 | Image processing apparatus and method |
| CN101102398B (en) * | 2007-07-26 | 2010-05-19 | 上海交通大学 | Fully automatic real-time digital image processing enhancement system |
| JP5012333B2 (en) * | 2007-08-30 | 2012-08-29 | コニカミノルタアドバンストレイヤー株式会社 | Image processing apparatus, image processing method, and imaging apparatus |
| JP4375464B2 (en) * | 2007-09-11 | 2009-12-02 | 三菱電機株式会社 | Noise reduction device |
| KR20100099686A (en) | 2007-12-04 | 2010-09-13 | 소니 주식회사 | Image processing device and method, program, and recording medium |
| JP2009238009A (en) * | 2008-03-27 | 2009-10-15 | Toshiba Corp | Image processing apparatus and method |
| JP4585602B1 (en) * | 2009-09-18 | 2010-11-24 | 株式会社東芝 | Image processing apparatus, display apparatus, and image processing method |
| RU2412554C1 (en) * | 2010-01-25 | 2011-02-20 | Учреждение Российской академии наук Институт физики полупроводников им. А.В. Ржанова Сибирского отделения РАН (ИФП СО РАН) | Method of compensating for defective photosensitive elements of multielement photodetector |
| CN101916431B (en) * | 2010-07-23 | 2012-06-27 | 北京工业大学 | Low-illumination image data processing method and system |
| CN102044070A (en) * | 2011-01-10 | 2011-05-04 | 北京师范大学 | Retinex based nonlinear color image enhancement method |
-
2012
- 2012-03-30 JP JP2012079738A patent/JP5470415B2/en active Active
- 2012-10-09 CN CN201280072052.9A patent/CN104246865B/en active Active
- 2012-10-09 RU RU2014137567A patent/RU2611005C2/en not_active IP Right Cessation
- 2012-10-09 WO PCT/JP2012/076108 patent/WO2013145388A1/en not_active Ceased
- 2012-10-09 IN IN8974DEN2014 patent/IN2014DN08974A/en unknown
- 2012-10-09 US US14/389,611 patent/US9336581B2/en active Active
- 2012-10-09 AU AU2012374716A patent/AU2012374716B2/en not_active Ceased
- 2012-10-09 EP EP12872830.0A patent/EP2833355B1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| AU2012374716A1 (en) | 2014-11-20 |
| EP2833355A1 (en) | 2015-02-04 |
| CN104246865A (en) | 2014-12-24 |
| WO2013145388A1 (en) | 2013-10-03 |
| RU2611005C2 (en) | 2017-02-17 |
| AU2012374716B2 (en) | 2016-07-14 |
| US20150117775A1 (en) | 2015-04-30 |
| JP2013210773A (en) | 2013-10-10 |
| EP2833355A4 (en) | 2015-12-16 |
| US9336581B2 (en) | 2016-05-10 |
| RU2014137567A (en) | 2016-05-27 |
| JP5470415B2 (en) | 2014-04-16 |
| EP2833355B1 (en) | 2020-08-19 |
| CN104246865B (en) | 2017-01-04 |
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