JP2019017108A5 - Signal processing apparatus, signal processing method, and camera system - Google Patents
Signal processing apparatus, signal processing method, and camera system Download PDFInfo
- Publication number
- JP2019017108A5 JP2019017108A5 JP2018188590A JP2018188590A JP2019017108A5 JP 2019017108 A5 JP2019017108 A5 JP 2019017108A5 JP 2018188590 A JP2018188590 A JP 2018188590A JP 2018188590 A JP2018188590 A JP 2018188590A JP 2019017108 A5 JP2019017108 A5 JP 2019017108A5
- Authority
- JP
- Japan
- Prior art keywords
- luminance
- dynamic range
- high dynamic
- video signal
- processing
- 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
- 238000003672 processing method Methods 0.000 title claims description 3
- 238000011156 evaluation Methods 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims 3
- 238000003384 imaging method Methods 0.000 claims 2
- 230000000875 corresponding Effects 0.000 claims 1
Description
本技術は、信号処理装置、信号処理方法およびカメラシステムに関し、詳しくは、ハイダイナミックレンジ映像信号の輝度評価を行うための信号処理装置等に関する。
The present technology relates to a signal processing device, a signal processing method, and a camera system, and more particularly, to a signal processing device and the like for performing luminance evaluation of a high dynamic range video signal.
また、この場合、ＣＰＵ２０４は、以下の数式（７）に基づいて、高輝度シェア率（ＨＬ_Ｒａｔｉｏ）を算出する。ここで、「ＣＯＵＮＴ［Ｙ≧ｂ］」は、全画面画素のうち“ｂ”以上のコード値を持つ画素の数を示す。
ＨＬ_Ｒａｔｉｏ＝ＣＯＵＮＴ［Ｙ≧ｂ］/全画面画素数 ・・・（７）
In this case, the CPU 204 calculates a high luminance share rate (HL_Ratio) based on the following mathematical formula ( 7 ). Here, “COUNT [Y ≧ b]” indicates the number of pixels having a code value of “b” or more among all screen pixels.
HL_Ratio = COUNT [Y ≧ b] / Number of pixels on the entire screen (7)
Claims (8)
上記算出された複数の輝度評価値を表示するための信号を出力する出力部を備える
信号処理装置。 A processing unit that calculates a plurality of luminance evaluation values related to the high dynamic range video signal by processing the high dynamic range video signal ;
An output unit that outputs a signal for displaying the calculated plurality of luminance evaluation values;
Signal processing device.
請求項１に記載の信号処理装置。The signal processing apparatus according to claim 1.
リニアな、あるいは階調圧縮処理された上記ハイダイナミックレンジ映像信号を用い、上記輝度評価値として一定の輝度レベル以上のエリアが全画面中に占める割合を算出する
請求項１または２に記載の信号処理装置。 The processing unit
Linear, or using the gradation compression processing has been the high dynamic range video signal, the signal according to claim 1 or 2 fixed luminance level or more areas as the luminance evaluation value is calculated the proportion in the full screen Processing equipment.
リニアな上記ハイダイナミックレンジ映像信号を用い、上記輝度評価値として一定の輝度レベル以上のエリアに対する輝度の平均値を算出する
請求項１から３のいずれかに記載の信号処理装置。 The processing unit
Using linear the high dynamic range video signal, the signal processing apparatus according to any one of claims 1 to 3, calculating an average value of luminance for a given luminance level or more areas as the luminance evaluation value.
階調圧縮処理された上記ハイダイナミックレンジ映像信号を用い、上記輝度評価値として一定の輝度レベル以上のエリアに対する輝度の平均値を算出する
請求項１から４のいずれかに記載の信号処理装置。 The processing unit
Using the high dynamic range video signal gradation compression processing, the signal processing apparatus according to any one of claims 1 to 4 for calculating an average value of luminance for a given luminance level or more areas as the luminance evaluation value.
上記一定の輝度レベル以上のエリアに対する輝度の平均値を、輝度１００％相当のコード値を基準値とした比率として算出する
請求項５に記載の信号処理装置。 The processing unit
The signal processing device according to claim 5 , wherein an average value of luminance with respect to an area of the certain luminance level or higher is calculated as a ratio with a code value corresponding to luminance of 100% as a reference value.
出力部が、上記算出された複数の輝度評価値を表示するための信号を出力する出力ステップを有する
信号処理方法。 A processing unit that calculates a plurality of luminance evaluation values related to the high dynamic range video signal by processing the high dynamic range video signal ;
The output unit includes an output step of outputting a signal for displaying the calculated plurality of luminance evaluation values.
Signal processing method.
上記撮像部で得られたリニアなハイダイナミックレンジ映像信号および/または該リニアなハイダイナミックレンジ映像信号に階調圧縮処理を施して得られたハイダイナミックレンジ映像信号を処理することにより該ハイダイナミックレンジ映像信号に関する複数の輝度評価値を算出する処理部と、
上記算出された複数の輝度評価値を表示するための信号を出力する出力部を備える
カメラシステム。
An imaging unit for obtaining a linear high dynamic range video signal;
The high dynamic range by processing a high dynamic range video signal obtained by performing gradation compression processing in linear high dynamic range video signal and / or the linear high dynamic range video signal obtained with the imaging unit A processing unit for calculating a plurality of luminance evaluation values related to the video signal ;
A camera system comprising: an output unit that outputs a signal for displaying the plurality of calculated luminance evaluation values.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018188590A JP6673424B2 (en) | 2018-10-03 | 2018-10-03 | Signal processing device, signal processing method, and camera system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018188590A JP6673424B2 (en) | 2018-10-03 | 2018-10-03 | Signal processing device, signal processing method, and camera system |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2016042866A Division JP6451669B2 (en) | 2016-03-04 | 2016-03-04 | Evaluation apparatus, evaluation method, and camera system |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2019017108A JP2019017108A (en) | 2019-01-31 |
| JP2019017108A5 true JP2019017108A5 (en) | 2019-03-28 |
| JP6673424B2 JP6673424B2 (en) | 2020-03-25 |
Family
ID=65359169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2018188590A Active JP6673424B2 (en) | 2018-10-03 | 2018-10-03 | Signal processing device, signal processing method, and camera system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6673424B2 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4245699B2 (en) * | 1998-09-16 | 2009-03-25 | オリンパス株式会社 | Imaging device |
| JP2003125240A (en) * | 2001-07-18 | 2003-04-25 | Canon Inc | Image data processor and histogram display method |
| JP2006295814A (en) * | 2005-04-14 | 2006-10-26 | Canon Inc | Image processing device and method therefor, and imaging device |
| JP2007266680A (en) * | 2006-03-27 | 2007-10-11 | Victor Co Of Japan Ltd | Imaging apparatus |
| JP4900343B2 (en) * | 2008-08-21 | 2012-03-21 | 株式会社Ｊｖｃケンウッド | Video imaging apparatus and exposure guide display method |
| JP2012044480A (en) * | 2010-08-19 | 2012-03-01 | Sony Corp | Image pickup apparatus and image pickup method |
-
2018
- 2018-10-03 JP JP2018188590A patent/JP6673424B2/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20220217271A1 (en) | Global Tone Mapping | |
| US20160364841A1 (en) | Color filter array scaler | |
| CN105659583B (en) | Image processing apparatus, image processing method, electronic equipment and computer readable storage medium | |
| US20150279006A1 (en) | Method and apparatus for reducing noise of image | |
| JP5605570B2 (en) | Image quality evaluation method, image quality evaluation system, and program | |
| JP2014529756A5 (en) | ||
| JP2009524371A5 (en) | ||
| JP6451669B2 (en) | Evaluation apparatus, evaluation method, and camera system | |
| CN107993189B (en) | Image tone dynamic adjustment method and device based on local blocking | |
| JPWO2009133879A1 (en) | Image evaluation method, image evaluation system, and program | |
| JP2011101180A5 (en) | Image processing apparatus and image processing method | |
| JP2014219790A5 (en) | ||
| JP2017085481A5 (en) | ||
| JP2017044841A5 (en) | ||
| JP2016541185A (en) | Method and apparatus for generating HDRI | |
| RU2017104887A (en) | METHOD AND SYSTEM OF IMAGE IMAGE | |
| JP2013219736A5 (en) | ||
| JP2019008789A5 (en) | ||
| JP2019057080A5 (en) | ||
| JP2010273222A5 (en) | ||
| JP2019017108A5 (en) | Signal processing apparatus, signal processing method, and camera system | |
| CN110602472A (en) | Local tone mapping method and device based on histogram and guide filtering | |
| JP2017224108A5 (en) | ||
| JP2007020087A5 (en) | ||
| JP2017092604A5 (en) |