JP2004336244A5 - - Google Patents
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- JP2004336244A5 JP2004336244A5 JP2003127235A JP2003127235A JP2004336244A5 JP 2004336244 A5 JP2004336244 A5 JP 2004336244A5 JP 2003127235 A JP2003127235 A JP 2003127235A JP 2003127235 A JP2003127235 A JP 2003127235A JP 2004336244 A5 JP2004336244 A5 JP 2004336244A5
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- correction
- evaluation value
- correction coefficient
- level
- imaging
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Claims (9)
前記複数の撮像信号のレベルを調整するためのレベル調整手段と、
温度情報に基づいて前記複数の撮像信号のレベル差を小さくするための補正係数を決定する補正係数決定手段とを備え、
前記補正係数決定手段で決定した補正係数を前記レベル調整手段に与えて前記複数の撮像信号のレベル差が小さくなるように調整を行なうこと
を特徴とする補正装置。A correction device that corrects a plurality of imaging signals from a plurality of output units of an imaging element,
Level adjusting means for adjusting the levels of the plurality of imaging signals;
Correction coefficient determining means for determining a correction coefficient for reducing a level difference between the plurality of imaging signals based on temperature information;
A correction apparatus, characterized in that the correction coefficient determined by the correction coefficient determination means is applied to the level adjustment means so that the level difference between the plurality of image pickup signals is reduced.
前記補正係数決定手段は、前記出力レベル検出手段から出力される前記複数の撮像信号のレベル検出結果から前記複数の撮像信号間のゲイン誤差を算出するゲイン誤差算出手段と、
前記前記複数の撮像信号間における被写体依存のレベル差を許容するための閾値を設定する閾値設定手段と、
前記ゲイン誤差算出手段により算出されたゲイン誤差が入力された際に、
前記撮像信号間のゲイン誤差が前記閾値設定手段によって設定された閾値を超えた場合には所定の基準値を出力し、
前記ゲイン誤差が前記閾値を超えない場合には入力されたゲイン誤差をそのまま出力する非線形処理手段とを備え、
前記非線形処理手段から出力される信号に基づいて補正係数を決定すること
を特徴とする請求項１に記載の補正装置。The correction device comprises output level detection means for detecting the level of the imaging signal,
The correction coefficient determining means includes a gain error calculating means for calculating a gain error between the plurality of imaging signals from the level detection result of the plurality of imaging signals output from the output level detecting means,
Threshold setting means for setting a threshold for allowing a subject-dependent level difference between the plurality of imaging signals;
When the gain error calculated by the gain error calculation means is input,
When a gain error between the imaging signals exceeds a threshold set by the threshold setting means, a predetermined reference value is output,
When the gain error does not exceed the threshold, non-linear processing means that outputs the input gain error as it is,
The correction apparatus according to claim 1, wherein a correction coefficient is determined based on a signal output from the nonlinear processing means.
前記評価値生成手段によって生成された評価値を複数のフレーム間で平均する評価値平均化手段と、
前記評価値平均化手段において平均化を行なうフレーム数を設定するフレーム数設定手段とを備え、
前記フレーム数設定手段により設定されたフレーム数分が平均化された評価値に基づいて補正係数を決定することを特徴とする請求項１に記載の補正装置。The correction coefficient determining means includes an evaluation value generating means for generating an evaluation value from the detection result of the output level detecting means,
Evaluation value averaging means for averaging evaluation values generated by the evaluation value generating means between a plurality of frames;
Frame number setting means for setting the number of frames to be averaged in the evaluation value averaging means,
2. The correction apparatus according to claim 1, wherein a correction coefficient is determined based on an evaluation value obtained by averaging the number of frames set by the frame number setting means.
を特徴とする請求項３に記載の補正装置。The correction apparatus according to claim 3, further comprising: a frame number control unit that controls the number of frames to be averaged by the evaluation value averaging unit according to the temperature of the image sensor or the periphery of the image sensor.
前記評価値生成手段によって生成された評価値にゲインを掛けるゲイン手段と、
前記ゲイン手段が前記評価値に掛けるゲインを、前記撮像素子もしくは撮像素子周辺の温度に応じて可変制御するゲイン制御手段とを備え、
前記ゲイン手段によってゲインが掛けられた評価値に基づいて補正係数を決定すること
を特徴とする請求項１に記載の補正装置。The correction coefficient determining means includes an evaluation value generating means for generating an evaluation value from the detection result of the output level detecting means,
Gain means for multiplying the evaluation value generated by the evaluation value generating means;
Gain control means for variably controlling the gain applied to the evaluation value according to the image sensor or the temperature around the image sensor,
2. The correction apparatus according to claim 1, wherein a correction coefficient is determined based on an evaluation value multiplied by a gain by the gain means.
前記複数の撮像信号のレベルを調整するためのレベル調整工程と、
温度情報に基づいて前記複数の撮像信号のレベル差を小さくするための補正係数を決定する補正係数決定工程とを有し、
前記補正係数決定工程で決定した補正係数を前記レベル調整工程に与えて前記複数の撮像信号のレベル差が小さくなるように調整を行なうこと
を特徴とする補正方法。A correction method for correcting a plurality of imaging signals from a plurality of output units of an imaging element,
A level adjustment step for adjusting the levels of the plurality of imaging signals;
A correction coefficient determining step for determining a correction coefficient for reducing a level difference between the plurality of imaging signals based on temperature information,
A correction method characterized in that the correction coefficient determined in the correction coefficient determination step is applied to the level adjustment step so that the level difference between the plurality of image pickup signals is reduced.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003127235A JP4136776B2 (en) | 2003-05-02 | 2003-05-02 | Correction apparatus, imaging apparatus, correction method, computer-readable storage medium, and program |
| US10/833,766 US7379104B2 (en) | 2003-05-02 | 2004-04-27 | Correction apparatus |
| CNB2004100366832A CN100373922C (en) | 2003-05-02 | 2004-04-28 | Correction apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003127235A JP4136776B2 (en) | 2003-05-02 | 2003-05-02 | Correction apparatus, imaging apparatus, correction method, computer-readable storage medium, and program |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2004336244A JP2004336244A (en) | 2004-11-25 |
| JP2004336244A5 true JP2004336244A5 (en) | 2007-01-11 |
| JP4136776B2 JP4136776B2 (en) | 2008-08-20 |
Family
ID=33503857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003127235A Expired - Fee Related JP4136776B2 (en) | 2003-05-02 | 2003-05-02 | Correction apparatus, imaging apparatus, correction method, computer-readable storage medium, and program |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4136776B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007124174A (en) * | 2005-10-27 | 2007-05-17 | Fujifilm Corp | Solid-state imaging apparatus and drive control method of solid-state imaging element |
| JP4723401B2 (en) | 2006-03-03 | 2011-07-13 | 富士フイルム株式会社 | Solid-state imaging device |
| JP4886335B2 (en) * | 2006-03-30 | 2012-02-29 | キヤノン株式会社 | Imaging apparatus and control method thereof |
| JP2009017350A (en) * | 2007-07-06 | 2009-01-22 | Hitachi Kokusai Electric Inc | Imaging device |
| JP2009284424A (en) | 2008-05-26 | 2009-12-03 | Sony Corp | Imaging apparatus, imaging method, and program |
| JP5615136B2 (en) * | 2010-01-12 | 2014-10-29 | 三菱電機株式会社 | Stereoscopic image correction method, stereoscopic display device, and stereoscopic image generation device |
| CN105959598B (en) * | 2016-05-30 | 2018-11-13 | 凌云光技术集团有限责任公司 | Camera multichannel balances look-up table scaling method, multichannel balance method and system |
-
2003
- 2003-05-02 JP JP2003127235A patent/JP4136776B2/en not_active Expired - Fee Related
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