JP2006237748A5 - - Google Patents
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- JP2006237748A5 JP2006237748A5 JP2005046227A JP2005046227A JP2006237748A5 JP 2006237748 A5 JP2006237748 A5 JP 2006237748A5 JP 2005046227 A JP2005046227 A JP 2005046227A JP 2005046227 A JP2005046227 A JP 2005046227A JP 2006237748 A5 JP2006237748 A5 JP 2006237748A5
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- image
- white balance
- balance correction
- value
- statistical values
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- 238000011156 evaluation Methods 0.000 claims 12
- 230000000875 corresponding Effects 0.000 claims 4
- 238000003384 imaging method Methods 0.000 claims 2
- 238000000034 method Methods 0.000 claims 1
Claims (15)
前記動画の第1画像及び該第1画像が入力してから予め設定された時間後に入力した第2画像のそれぞれの白色部分の画像データから複数の統計値を算出する算出手段と、
前記第1画像の撮影時の光源と、前記第2画像の撮影時の光源とが異なっているかどうかを判断する判断手段と、
前記判断手段により光源が異なっていると判断された場合に、前記第1画像の複数の統計値を前記第2画像の複数の対応する統計値まで、それぞれ一定の割合で所定時間、変化させる変更手段と、
前記所定時間の間、前記変更手段により変化された複数の統計値を用いてホワイトバランス補正係数を算出する補正係数算出手段とを有し、
前記第1画像と前記第2画像との間に入力した画像を、前記補正係数算出手段により算出されたホワイトバランス補正係数を用いてホワイトバランス補正することを特徴とするホワイトバランス補正装置。 A white balance correction device that performs white balance correction based on image data of a white portion of an image of each frame of an input video ,
Calculating means for calculating a plurality of statistical values from the image data of each white portion of the first image of the moving image and the second image input after a predetermined time from the input of the first image;
And imaging the light source when the first image, and determining means for determining whether the light source at the time of photographing of the second image are different,
If the light source is determined to be different by the determination means changes, until said plurality of corresponding statistical values of the plurality of statistics the second image of the first image, the predetermined time for each constant rate, changing Means,
Correction coefficient calculating means for calculating a white balance correction coefficient using a plurality of statistical values changed by the changing means during the predetermined time ,
A white balance correction apparatus , wherein an image input between the first image and the second image is subjected to white balance correction using a white balance correction coefficient calculated by the correction coefficient calculation means .
前記動画の第1画像及び該第1画像が入力してから予め設定された時間後に入力した第2画像のそれぞれの白色部分の画像データから複数の統計値を算出する算出工程と、
前記第1画像の撮影時の光源と、前記第2画像の撮影時の光源とが異なっているかどうかを判断する判断工程と、
前記判断工程で光源が異なっていると判断された場合に、前記第1画像の複数の統計値を前記第2画像の複数の対応する統計値まで、それぞれ一定の割合で所定時間、変化させる変更工程と、
前記所定時間の間、前記変更工程により変化された複数の統計値を用いてホワイトバランス補正係数を算出する補正係数算出工程とを有し、
前記第1画像と前記第2画像との間に入力した画像を、前記補正係数算出工程で算出されたホワイトバランス補正係数を用いてホワイトバランス補正することを特徴とするホワイトバランス補正方法。 A white balance correction method for performing white balance correction based on image data of a white portion of an image of each frame of an input video ,
A calculation step of calculating a plurality of statistical values from the image data of each white portion of the first image of the moving image and the second image input after a predetermined time from the input of the first image;
A determination step of determining whether a light source at the time of capturing the first image is different from a light source at the time of capturing the second image;
If it is determined that the light source in the determining step is different changes, until said first image a plurality of corresponding statistical values of the plurality of statistical values the second image, the predetermined time for each constant rate, changing Process,
A correction coefficient calculating step of calculating a white balance correction coefficient using a plurality of statistical values changed by the changing step during the predetermined time ;
A white balance correction method , wherein an image input between the first image and the second image is subjected to white balance correction using the white balance correction coefficient calculated in the correction coefficient calculation step .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005046227A JP4960597B2 (en) | 2005-02-22 | 2005-02-22 | White balance correction apparatus and method, and imaging apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005046227A JP4960597B2 (en) | 2005-02-22 | 2005-02-22 | White balance correction apparatus and method, and imaging apparatus |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2006237748A JP2006237748A (en) | 2006-09-07 |
JP2006237748A5 true JP2006237748A5 (en) | 2008-04-10 |
JP4960597B2 JP4960597B2 (en) | 2012-06-27 |
Family
ID=37044955
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2005046227A Active JP4960597B2 (en) | 2005-02-22 | 2005-02-22 | White balance correction apparatus and method, and imaging apparatus |
Country Status (1)
Country | Link |
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JP (1) | JP4960597B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4958680B2 (en) * | 2007-08-08 | 2012-06-20 | キヤノン株式会社 | IMAGING DEVICE, WHITE BALANCE CONTROL METHOD, PROGRAM, AND STORAGE MEDIUM |
JP5644260B2 (en) * | 2010-08-24 | 2014-12-24 | 株式会社リコー | Imaging apparatus and white balance control method |
CN107197225B (en) * | 2017-06-13 | 2019-04-05 | 浙江大学 | Color digital camera white balance correcting based on chromatic adaptation model |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3114878B2 (en) * | 1990-12-29 | 2000-12-04 | ソニー株式会社 | Imaging device |
JP3055985B2 (en) * | 1991-09-04 | 2000-06-26 | 富士写真フイルム株式会社 | White balance adjustment device |
JPH07162890A (en) * | 1993-12-08 | 1995-06-23 | Matsushita Electric Ind Co Ltd | White balance adjusting device |
JPH0898200A (en) * | 1994-09-29 | 1996-04-12 | Sanyo Electric Co Ltd | Video camera |
JPH09307913A (en) * | 1996-05-13 | 1997-11-28 | Casio Comput Co Ltd | White balance controller |
JP2000165906A (en) * | 1998-11-20 | 2000-06-16 | Victor Co Of Japan Ltd | Method and device for automatic white balance control |
JP2001320726A (en) * | 2000-05-10 | 2001-11-16 | Sony Corp | Imaging unit |
JP2003023645A (en) * | 2001-07-10 | 2003-01-24 | Sony Corp | Chrominance signal processing circuit and chrominance signal processing method |
JP2003259390A (en) * | 2002-03-01 | 2003-09-12 | Canon Inc | White balance correction apparatus, imaging unit provided with the same, control method therefor, program for activating the control method, and storage medium stored with the program |
JP3848274B2 (en) * | 2002-03-06 | 2006-11-22 | キヤノン株式会社 | White balance adjustment method, imaging apparatus, program, and storage medium |
-
2005
- 2005-02-22 JP JP2005046227A patent/JP4960597B2/en active Active
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