JP2011151465A5 - - Google Patents
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- JP2011151465A5 JP2011151465A5 JP2010009034A JP2010009034A JP2011151465A5 JP 2011151465 A5 JP2011151465 A5 JP 2011151465A5 JP 2010009034 A JP2010009034 A JP 2010009034A JP 2010009034 A JP2010009034 A JP 2010009034A JP 2011151465 A5 JP2011151465 A5 JP 2011151465A5
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本発明は、映像の色温度を補正する機能を備えた映像処理装置とその色温度補正方法に関するものである。 The present invention image processing apparatus having a function of correcting the color temperature of the movies image and its color temperature correction method.
上記課題を解決するために本発明に係る装置は、映像の色温度を補正する機能を有する映像処理装置であって、外光を検出する外光検出手段と、前記外光検出手段の検出結果から照度を算出する照度算出手段と、前記外光検出手段の検出結果から環境色温度を算出する環境色温度算出手段と、前記映像の明るさ情報を検出する映像明るさ検出手段と、前記環境色温度に応じて前記映像の色温度を補正する際、前記照度及び前記映像の明るさ情報に応じて映像の色温度を修正する制御手段を備える。 In order to solve the above problems, an apparatus according to the present invention is an image processing apparatus having a function of correcting a color temperature of an image , and includes an external light detection unit that detects external light, and a detection result of the external light detection unit. Illuminance calculation means for calculating illuminance from the image, environmental color temperature calculation means for calculating environmental color temperature from the detection result of the external light detection means, video brightness detection means for detecting brightness information of the video, and the environment When the color temperature of the image is corrected according to the color temperature , control means for correcting the color temperature of the image according to the illuminance and the brightness information of the image is provided.
Claims (18)
外光を検出する外光検出手段と、
前記外光検出手段の検出結果から照度を算出する照度算出手段と、
前記外光検出手段の検出結果から環境色温度を算出する環境色温度算出手段と、
前記映像の明るさ情報を検出する映像明るさ検出手段と、
前記環境色温度に応じて前記映像の色温度を補正する際、前記照度及び前記映像の明るさ情報に応じて映像の色温度を修正する制御手段を備えることを特徴とする映像処理装置。 An image processing apparatus having a function of correcting the color temperature of an image,
Outside light detecting means for detecting outside light;
Illuminance calculating means for calculating illuminance from the detection result of the outside light detecting means;
Environmental color temperature calculation means for calculating environmental color temperature from the detection result of the external light detection means;
Video brightness detection means for detecting brightness information of the video;
An image processing apparatus comprising: control means for correcting the color temperature of an image according to the illuminance and the brightness information of the image when correcting the color temperature of the image according to the environmental color temperature .
前記照度及び明るさ情報に基づき、前記映像の色温度を修正するための情報として、前記映像の色温度の基準となる基準映像色温度及び映像の色温度の可変範囲を算出する修正情報算出手段と、
前記環境色温度及び前記修正情報に基づいて前記映像の色温度を算出する映像色温度算出手段と、
前記映像の色温度に応じた補正を行うための補正係数を算出する補正係数算出手段と、
前記補正係数に従って前記映像の色温度を補正する映像色温度補正手段と、を備えることを特徴とする請求項１に記載の映像処理装置。 The control means includes
Based on the illuminance and brightness information, as information for correcting the color temperature of the video, a correction information calculation unit that calculates a reference video color temperature that is a reference of the color temperature of the video and a variable range of the color temperature of the video When,
Image color temperature calculating means for calculating a color temperature of the image based on the environmental color temperature and the correction information;
Correction coefficient calculating means for calculating a correction coefficient for performing correction according to the color temperature of the video;
The video processing apparatus according to claim 1, further comprising: a video color temperature correction unit that corrects a color temperature of the video according to the correction coefficient.
前記照度及び前記映像の明るさ情報に基づいて前記可変範囲を求める可変範囲算出手段と、
前記照度及び前記映像の明るさ情報に基づいて前記基準映像色温度を求める基準映像色温度算出手段を備えることを特徴とする、請求項２又は３に記載の映像処理装置。 The correction information calculation means includes
Variable range calculation means for determining the variable range based on the illuminance and the brightness information of the video;
The video processing apparatus according to claim 2, further comprising a reference video color temperature calculating unit that calculates the reference video color temperature based on the illuminance and the brightness information of the video.
基準環境色温度を設定する設定手段と、
前記基準環境色温度と前記環境色温度との差分を算出する第１の差分算出手段と、
前記第１の差分算出手段の出力及び前記可変範囲に基づいて、前記基準映像色温度に対する映像色温度の差分値を算出する第２の差分算出手段と、
前記基準映像色温度と前記第２の差分算出手段の出力を加算する加算手段とを備えることを特徴とする、請求項２から４のいずれか１項に記載の映像処理装置。 The image color temperature calculating means includes
A setting means for setting a reference environmental color temperature;
First difference calculating means for calculating a difference between the reference environmental color temperature and the environmental color temperature;
Second difference calculation means for calculating a difference value of the video color temperature with respect to the reference video color temperature based on the output of the first difference calculation means and the variable range;
5. The video processing apparatus according to claim 2, further comprising an adding unit that adds the reference video color temperature and an output of the second difference calculating unit.
前記外光検出工程での検出結果から照度を算出する照度算出工程と、
前記外光検出工程での検出結果から環境色温度を算出する環境色温度算出工程と、
前記映像の明るさ情報を検出する映像明るさ検出工程と、
前記環境色温度に応じて前記映像の色温度を補正する際、前記照度及び前記映像の明るさ情報に応じて映像の色温度を修正する制御工程を備えることを特徴とする色温度補正方法。 External light detecting step of detecting external light,
An illuminance calculation step of calculating illuminance from the detection result in the external light detection step;
An environmental color temperature calculation step of calculating an environmental color temperature from the detection result in the external light detection step;
Video brightness detection step for detecting a brightness information of the image,
A color temperature correction method comprising: a control step of correcting the color temperature of an image according to the illuminance and the brightness information of the image when the color temperature of the image is corrected according to the environmental color temperature .
前記照度及び明るさ情報に基づき、前記映像の色温度を修正するための情報として、前記映像の色温度の基準となる基準映像色温度及び映像の色温度の可変範囲を算出する修正情報算出工程と、A correction information calculation step of calculating a reference video color temperature and a variable range of the video color temperature as a reference for the color temperature of the video as information for correcting the color temperature of the video based on the illuminance and brightness information When,
前記環境色温度及び前記修正情報に基づいて前記映像の色温度を算出する映像色温度算出工程と、A video color temperature calculating step of calculating a color temperature of the video based on the environmental color temperature and the correction information;
前記映像の色温度に応じた補正を行うための補正係数を算出する補正係数算出工程と、A correction coefficient calculating step of calculating a correction coefficient for performing correction according to the color temperature of the video;
前記補正係数に従って前記映像の色温度を補正する映像色温度補正工程と、を有することを特徴とする請求項１０に記載の色温度補正方法。The color temperature correction method according to claim 10, further comprising: an image color temperature correction step of correcting a color temperature of the image according to the correction coefficient.
前記照度及び前記映像の明るさ情報に基づいて前記可変範囲を求める可変範囲算出工程と、A variable range calculating step for obtaining the variable range based on the illuminance and the brightness information of the video;
前記照度及び前記映像の明るさ情報に基づいて前記基準映像色温度を求める基準映像色温度算出工程を有することを特徴とする、請求項１１又は１２に記載の色温度補正方法。The color temperature correction method according to claim 11, further comprising a reference image color temperature calculation step of obtaining the reference image color temperature based on the illuminance and the brightness information of the image.
基準環境色温度を設定する設定工程と、A setting process for setting a reference environmental color temperature;
前記基準環境色温度と前記環境色温度との差分を算出する第１の差分算出工程と、A first difference calculating step of calculating a difference between the reference environmental color temperature and the environmental color temperature;
前記第１の差分算出工程での出力及び前記可変範囲に基づいて、前記基準映像色温度に対する映像色温度の差分値を算出する第２の差分算出工程と、A second difference calculating step of calculating a difference value of the video color temperature with respect to the reference video color temperature based on the output in the first difference calculating step and the variable range;
前記基準映像色温度と前記第２の差分算出工程での出力を加算する加算工程とを有することを特徴とする、請求項１１から１３のいずれか１項に記載の色温度補正方法。14. The color temperature correction method according to claim 11, further comprising an adding step of adding the reference video color temperature and an output in the second difference calculating step.
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| CN102419947B (en) * | 2011-11-21 | 2013-12-18 | 四川长虹电器股份有限公司 | Color temperature debugging method of liquid crystal display screen |
| JP6051605B2 (en) * | 2012-06-13 | 2016-12-27 | ソニー株式会社 | Display device, display control method, and program |
| JP6838026B2 (en) * | 2018-10-26 | 2021-03-03 | Ｎｅｃパーソナルコンピュータ株式会社 | Electronics |
| CN114430480B (en) * | 2021-12-30 | 2023-12-12 | 南京巨鲨显示科技有限公司 | Environment color temperature self-adaptive adjusting method and system for medical display |
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| JP3632574B2 (en) * | 2000-07-31 | 2005-03-23 | セイコーエプソン株式会社 | Environment-adaptive image display system and information storage medium |
| JP4899255B2 (en) * | 2001-05-30 | 2012-03-21 | パナソニック株式会社 | Display device |
| JP4306440B2 (en) * | 2003-12-16 | 2009-08-05 | 日本ビクター株式会社 | Backlight device |
| JP2007086549A (en) * | 2005-09-22 | 2007-04-05 | Fuji Xerox Co Ltd | Image display device and image display method |
| JP4811003B2 (en) * | 2005-12-09 | 2011-11-09 | カシオ計算機株式会社 | Projector, video output method, and video output program |
| JP2008079021A (en) * | 2006-09-21 | 2008-04-03 | Sharp Corp | Video processing apparatus |
| JP2009031554A (en) * | 2007-07-27 | 2009-02-12 | Sharp Corp | Video display device and video display method thereof |
| JP4900403B2 (en) * | 2009-02-23 | 2012-03-21 | 株式会社日立製作所 | Liquid crystal display |
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