JP2010191968A5 - Image enhancement apparatus, image enhancement method and image enhancement program - Google Patents
Image enhancement apparatus, image enhancement method and image enhancement program Download PDFInfo
- Publication number
- JP2010191968A5 JP2010191968A5 JP2010035332A JP2010035332A JP2010191968A5 JP 2010191968 A5 JP2010191968 A5 JP 2010191968A5 JP 2010035332 A JP2010035332 A JP 2010035332A JP 2010035332 A JP2010035332 A JP 2010035332A JP 2010191968 A5 JP2010191968 A5 JP 2010191968A5
- Authority
- JP
- Japan
- Prior art keywords
- pixel
- luminance
- image
- diffuse reflection
- unit
- 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
Claims (11)
前記全拡散反射輝度計算部によって計算された画素ごとの全拡散反射輝度に基づいて、画素ごとを高輝度画素又は非高輝度画素に分類する画素分類部と、
前記画素分類部によって分類された非高輝度画素ごとに対して、当該非高輝度画素の全拡散反射輝度に基づいて、当該非高輝度画素の彩度を強調する彩度強調部と
を有することを特徴とする画像強調装置。 A total diffuse reflection luminance calculation unit which calculates total diffuse reflection luminance indicating diffuse reflection luminance of color and density for each pixel of a captured image;
A pixel classification unit that classifies each pixel as a high brightness pixel or a non-high brightness pixel based on the total diffuse reflection brightness for each pixel calculated by the total diffuse reflection brightness calculation unit;
And a saturation emphasizing unit for emphasizing the saturation of the non-high luminance pixel based on the total diffuse reflection luminance of the non-high luminance pixel for each of the non-high luminance pixels classified by the pixel classification unit. An image enhancement device characterized by
をさらに含むことを特徴とする請求項1に記載の画像強調装置。The image enhancing apparatus according to claim 1, further comprising:
前記画素の全拡散反射輝度に基づいて、前記画素の拡散反射成分を計算する拡散反射成分計算部と、A diffuse reflection component calculation unit that calculates the diffuse reflection component of the pixel based on the total diffuse reflection luminance of the pixel;
前記拡散反射成分計算部によって計算された拡散反射成分と所定の閾値とを色成分ごとに比較する比較部と、A comparison unit that compares the diffuse reflection component calculated by the diffuse reflection component calculation unit with a predetermined threshold for each color component;
前記比較部によって比較された拡散反射成分が、いずれの色成分においても所定の閾値より小さい場合には、前記画素を非高輝度画素であると判定し、いずれかの色成分において所定の閾値より大きい場合には、前記画素を高輝度画素であると判定する判定部とIf the diffuse reflection component compared by the comparison unit is smaller than a predetermined threshold for any color component, the pixel is determined to be a non-high luminance pixel, and any of the color components is determined to have a predetermined threshold When the pixel is large, a determination unit that determines that the pixel is a high luminance pixel and
をさらに含むことを特徴とする請求項1に記載の画像強調方法。The image enhancement method according to claim 1, further comprising:
前記画素ごとに対して、当該画素の対象画像強度に基づいて対象画像を強調する対象画像強調部とA target image emphasizing unit for emphasizing the target image based on the target image intensity of the pixel for each of the pixels;
をさらに有することを特徴とする請求項1に記載の画像強調装置。The image enhancing apparatus according to claim 1, further comprising:
画像の背景輝度画像を抽出する背景輝度画像抽出部と、A background luminance image extraction unit that extracts a background luminance image of the image;
前記画像の輝度画像と前記抽出した背景輝度画像との差分画像を取得する差分画像取得部と、 A difference image acquisition unit that acquires a difference image between the luminance image of the image and the extracted background luminance image;
前記画像の対象画像の輝度極値を試算する対象画像の輝度極値試算部と、A luminance extreme value calculation unit for calculating a luminance extreme value of the target image of the image;
前記差分画像取得部によって取得された差分画像と前記対象画像の輝度極値試算部によって試算された対象画像の輝度極値とに基づいて、前記画像における画素ごとの対象画像強度を計算する対象画像強度計算部とA target image for calculating a target image strength for each pixel in the image based on the difference image acquired by the difference image acquisition unit and the luminance extreme of the target image estimated by the luminance extreme value estimation unit of the target image Strength calculation unit and
をさらに含むことを特徴とする請求項4に記載の画像強調装置。The image enhancing apparatus according to claim 4, further comprising:
を含むことを特徴とする請求項5に記載の画像強調装置。The image enhancing apparatus according to claim 5, comprising:
前記画素選択部によって選択された画素の輝度平均値を前記画素の背景輝度として計算し、当該計算を所定の回数反復する背景輝度反復計算部とA background luminance repetitive calculation unit which calculates a luminance average value of the pixels selected by the pixel selection unit as a background luminance of the pixels and repeats the calculation a predetermined number of times;
をさらに含むことを特徴とする請求項6に記載の画像強調装置。The image enhancing apparatus according to claim 6, further comprising:
前記対象画像の輝度極値計算部によって計算された対象画像輝度極値の最大値を前記画素の輝度極値として判定する対象画像の輝度極値判定部とA luminance extreme determination unit of a target image that determines the maximum value of the target image luminance extreme calculated by the luminance extreme calculation unit of the target image as the luminance extreme of the pixel;
を含むことを特徴とする請求項5に記載の画像強調装置。The image enhancing apparatus according to claim 5, comprising:
をさらに含むことを特徴とする請求項4に記載の画像強調装置。The image enhancing apparatus according to claim 4, further comprising:
撮影された画像の画素ごとのカラー及び濃淡の拡散反射輝度を示す全拡散反射輝度を計算する全拡散反射輝度計算ステップと、
前記全拡散反射輝度計算ステップによって計算された画素ごとの全拡散反射輝度に基づいて、画素ごとを高輝度画素又は非高輝度画素に分類する画素分類ステップと、
前記画素分類ステップによって分類された非高輝度画素ごとに対して、当該非高輝度画素の全拡散反射輝度に基づいて、当該非高輝度画素の彩度を強調する彩度強調ステップと
を実行することを特徴とする画像強調方法。 The image enhancement device
Total diffuse reflection luminance calculation step of calculating total diffuse reflection luminance indicating diffuse reflection luminance of color and density for each pixel of the photographed image;
A pixel classification step of classifying each pixel into a high luminance pixel or a non-high luminance pixel based on the total diffuse reflection luminance for each pixel calculated by the total diffuse reflection luminance calculating step;
Performing a saturation emphasizing step of emphasizing the saturation of the non-high luminance pixel based on the total diffuse reflection luminance of the non-high luminance pixel for each of the non-high luminance pixels classified in the pixel classification step; Image enhancement method characterized by
撮影された画像の画素ごとのカラー及び濃淡の拡散反射輝度を示す全拡散反射輝度を計算する全拡散反射輝度計算ステップと、Total diffuse reflection luminance calculation step of calculating total diffuse reflection luminance indicating diffuse reflection luminance of color and density for each pixel of the photographed image;
前記全拡散反射輝度計算ステップによって計算された画素ごとの全拡散反射輝度に基づいて、画素ごとを高輝度画素又は非高輝度画素に分類する画素分類ステップと、A pixel classification step of classifying each pixel into a high luminance pixel or a non-high luminance pixel based on the total diffuse reflection luminance for each pixel calculated by the total diffuse reflection luminance calculating step;
前記画素分類ステップによって分類された非高輝度画素ごとに対して、当該非高輝度画素の全拡散反射輝度に基づいて、当該非高輝度画素の彩度を強調する彩度強調ステップとA saturation emphasizing step of emphasizing the saturation of the non-high luminance pixel based on the total diffuse reflection luminance of the non-high luminance pixel for each non-high luminance pixel classified in the pixel classification step;
を実行させることを特徴とする画像強調プログラム。An image enhancement program characterized by causing
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009100056951A CN101814179B (en) | 2009-02-19 | 2009-02-19 | Image enhancement method and image enhancement device |
CN200910005695.1 | 2009-02-19 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2010191968A JP2010191968A (en) | 2010-09-02 |
JP2010191968A5 true JP2010191968A5 (en) | 2012-12-13 |
JP5440241B2 JP5440241B2 (en) | 2014-03-12 |
Family
ID=42621427
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010035332A Active JP5440241B2 (en) | 2009-02-19 | 2010-02-19 | Image enhancement device, image enhancement method, and image enhancement program |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP5440241B2 (en) |
CN (1) | CN101814179B (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103514588B (en) * | 2013-10-10 | 2016-05-18 | 广东威创视讯科技股份有限公司 | Image enchancing method and system |
CN103903229B (en) * | 2014-03-13 | 2017-01-04 | 中安消技术有限公司 | A kind of evening images Enhancement Method and device |
CN107305685B (en) * | 2016-04-20 | 2020-06-05 | 瑞昱半导体股份有限公司 | Image contrast enhancement method and apparatus |
CN105976344A (en) * | 2016-04-26 | 2016-09-28 | 北京小米移动软件有限公司 | Whiteboard image processing method and whiteboard image processing device |
CN106210446B (en) * | 2016-07-18 | 2019-08-30 | 北京小米移动软件有限公司 | Saturation degree Enhancement Method and device |
CN106331427B (en) * | 2016-08-24 | 2019-12-03 | 北京小米移动软件有限公司 | Saturation degree Enhancement Method and device |
CN110858281B (en) * | 2018-08-22 | 2022-10-04 | 浙江宇视科技有限公司 | Image processing method, image processing device, electronic eye and storage medium |
KR102664754B1 (en) * | 2019-02-20 | 2024-05-10 | 삼성전자주식회사 | Method for Applying Image Effect and the Electronic Device supporting the same |
CN110070009A (en) * | 2019-04-08 | 2019-07-30 | 北京百度网讯科技有限公司 | Road surface object identification method and device |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6579239B1 (en) * | 2002-04-05 | 2003-06-17 | Ge Medical Systems Global Technology Company, Llc | System and method for automatic adjustment of brightness and contrast in images |
JP2004304641A (en) * | 2003-03-31 | 2004-10-28 | Minolta Co Ltd | Image processing method and image processing apparatus |
JP4595660B2 (en) * | 2005-05-06 | 2010-12-08 | カシオ計算機株式会社 | Imaging apparatus, captured image processing method, and program |
JP4140619B2 (en) * | 2005-06-14 | 2008-08-27 | 松下電器産業株式会社 | Image composition apparatus, image collation apparatus using the same, and image composition method |
US7426312B2 (en) * | 2005-07-05 | 2008-09-16 | Xerox Corporation | Contrast enhancement of images |
WO2007029446A1 (en) * | 2005-09-01 | 2007-03-15 | Matsushita Electric Industrial Co., Ltd. | Image processing method, image processing device, and image processing program |
-
2009
- 2009-02-19 CN CN2009100056951A patent/CN101814179B/en active Active
-
2010
- 2010-02-19 JP JP2010035332A patent/JP5440241B2/en active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP2010191968A5 (en) | Image enhancement apparatus, image enhancement method and image enhancement program | |
JP2006350557A5 (en) | ||
JP2012073953A5 (en) | ||
JP2014188222A5 (en) | ||
CN106067177B (en) | HDR scene detection method and device | |
JP2016521890A5 (en) | ||
US8917938B2 (en) | Method for estimating blur degree of image and method for evaluating image quality | |
WO2016037422A1 (en) | Method for detecting change of video scene | |
JP2006350559A5 (en) | ||
WO2009044148A8 (en) | Apparatus and method of image analysis | |
WO2008120321A1 (en) | Image processing device, image processing method, and image processing program | |
CN109982012B (en) | Image processing method and device, storage medium and terminal | |
EP2228990A3 (en) | Image processing device and method | |
JP2009201994A5 (en) | ||
JP2014161537A5 (en) | ||
JP2010191968A (en) | Image enhancement method and image enhancement device | |
JP2020077165A5 (en) | ||
JP2011249939A5 (en) | Image processing apparatus, image processing method, and program | |
JP5338762B2 (en) | White balance coefficient calculation device and program | |
JP2015005221A5 (en) | ||
JP2017073639A5 (en) | ||
KR101796523B1 (en) | Enhancing method and system of accuracy of depth map under variable illumination | |
Fitriyah et al. | An analysis of rgb, hue and grayscale under various illuminations | |
Phadke et al. | Illumination invariant mean-shift tracking | |
JP2013186635A5 (en) |