JP2005107019A5 - - Google Patents
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- JP2005107019A5 JP2005107019A5 JP2003338305A JP2003338305A JP2005107019A5 JP 2005107019 A5 JP2005107019 A5 JP 2005107019A5 JP 2003338305 A JP2003338305 A JP 2003338305A JP 2003338305 A JP2003338305 A JP 2003338305A JP 2005107019 A5 JP2005107019 A5 JP 2005107019A5
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Claims (15)
前記表示画像の明るさを特徴付ける画像パラメータを前記映像信号から抽出する第１ステップと、前記画像パラメータの時間変化に依存して前記調光処理と前記伸張処理とに係るシステム制御パラメータを決定し当該システム制御パラメータに基づいて前記調光処理及び前記伸張処理を行う第２ステップとを備え、
前記映像信号の階調数を目標階調まで伸張する間、前記表示画像における映像変化が知覚されないようにかつ白とびが生じないように前記映像信号の階調特性を修正する修正ステップを有することを特徴とする画像表示方法。 An image display method for adjusting a display image by dimming processing of illumination light and expansion processing of the number of gradations of a video signal,
A first step of extracting an image parameter characterizing the brightness of the display image from the video signal, and determining a system control parameter related to the dimming process and the extension process depending on a temporal change of the image parameter; A second step of performing the dimming process and the extension process based on a system control parameter,
A correction step of correcting a gradation characteristic of the video signal so that a video change in the display image is not perceived and overexposure does not occur while the number of gradations of the video signal is expanded to a target gradation. An image display method characterized by the above.
前記表示画像の明るさを特徴付ける画像パラメータを前記映像信号から抽出する第１ステップと、前記画像パラメータの時間変化に依存して前記調光処理と前記伸張処理とに係るシステム制御パラメータを決定し当該システム制御パラメータに基づいて前記調光処理及び前記伸張処理を行う第２ステップとを備え、
前記画像領域を複数領域に分割し、当該複数領域のいずれかにおいて白とびが検出された場合に、白とびが検出された領域における前記映像信号に対する伸張係数を他の領域の前記映像信号に対する伸張係数よりも小さくすることを特徴とする画像表示方法。 An image display method for adjusting a display image by dimming processing of illumination light and expansion processing of the number of gradations of a video signal,
A first step of extracting an image parameter characterizing the brightness of the display image from the video signal, and determining a system control parameter related to the dimming process and the extension process depending on a temporal change of the image parameter; A second step of performing the dimming process and the extension process based on a system control parameter,
The image area is divided into a plurality of areas, and when an overexposure is detected in any of the plural areas, an expansion coefficient for the video signal in the area where the overexposure is detected is expanded with respect to the video signal in another area An image display method characterized by being smaller than a coefficient.
前記表示画像の明るさを特徴付ける画像パラメータを映像信号から抽出する画像パラメータ抽出手段と、前記画像パラメータの時間変化に依存して前記調光処理と前記伸張処理とに係るシステム制御パラメータを決定し当該システム制御パラメータに基づいて前記調光処理及び前記伸張処理を行う制御手段とを備え、
前記制御手段は、前記映像信号の階調数を目標階調まで伸張する間、前記表示画像における映像変化が知覚されないようにかつ白とびが生じないように前記映像信号の階調特性を修正することを特徴とする画像表示装置。 An image display device in which a display image is adjusted by dimming processing of illumination light and expansion processing of the number of gradations of a video signal,
Image parameter extracting means for extracting image parameters characterizing the brightness of the display image from a video signal, and determining system control parameters for the dimming process and the extension process depending on the temporal change of the image parameter Control means for performing the dimming process and the extension process based on a system control parameter,
The control means corrects the gradation characteristics of the video signal so that a video change in the display image is not perceived and whiteout does not occur while the number of gradations of the video signal is expanded to a target gradation. An image display device characterized by that.
当該白とび検出手段において前記白とびが検出された場合に、前記制御手段は、前記映像信号の階調特性を修正することを特徴とする請求項８〜１０いずれかに記載の画像表示装置。 A whiteout detecting means for detecting whiteout in the image;
11. The image display device according to claim 8, wherein when the overexposure is detected by the overexposure detection unit, the control unit corrects a gradation characteristic of the video signal.
前記制御手段は、白とびが検出された領域における前記映像信号の階調特性を修正することを特徴とする請求項８〜１０いずれかに記載の画像表示装置。 The overexposure detecting means divides the display image into a plurality of areas, detects overexposure for each area,
The image display device according to claim 8, wherein the control unit corrects gradation characteristics of the video signal in a region where overexposure is detected.
前記表示画像の明るさを特徴付ける画像パラメータを映像信号から抽出する画像パラメータ抽出手段と、前記画像パラメータの時間変化に依存して前記調光処理と前記伸張処理とに係るシステム制御パラメータを決定し当該システム制御パラメータに基づいて前記調光処理及び前記伸張処理を行う制御手段と、前記表示画像を複数領域に分割して各領域毎に白とびを検出する白とび検出手段とを備え、
前記制御手段は、白とびが検出された領域における前記映像信号に対する伸張係数を他の領域の前記映像信号に対する伸張係数よりも小さくすることを特徴とする画像表示装置。 An image display device in which a display image is adjusted by dimming processing of illumination light and expansion processing of the number of gradations of a video signal,
Image parameter extracting means for extracting image parameters characterizing the brightness of the display image from a video signal, and determining system control parameters for the dimming process and the extension process depending on the temporal change of the image parameter Control means for performing the dimming process and the expansion process based on a system control parameter, and a whiteout detecting means for dividing the display image into a plurality of areas and detecting a whiteout for each area,
The image display apparatus according to claim 1, wherein the control means makes an expansion coefficient for the video signal in an area where overexposure is detected smaller than an expansion coefficient for the video signal in another area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003338305A JP2005107019A (en) | 2003-09-29 | 2003-09-29 | Image display method and system, and projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003338305A JP2005107019A (en) | 2003-09-29 | 2003-09-29 | Image display method and system, and projector |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010125072A Division JP5201172B2 (en) | 2010-05-31 | 2010-05-31 | Image display method and apparatus, and projector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2005107019A JP2005107019A (en) | 2005-04-21 |
| JP2005107019A5 true JP2005107019A5 (en) | 2005-10-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003338305A Pending JP2005107019A (en) | 2003-09-29 | 2003-09-29 | Image display method and system, and projector |
Country Status (1)
| Country | Link |
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| JP (1) | JP2005107019A (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4432818B2 (en) | 2005-04-01 | 2010-03-17 | セイコーエプソン株式会社 | Image display device, image display method, and image display program |
| JP4438696B2 (en) | 2005-06-15 | 2010-03-24 | セイコーエプソン株式会社 | Image display apparatus and method |
| JP5092207B2 (en) * | 2005-06-15 | 2012-12-05 | セイコーエプソン株式会社 | Image display device and image display method |
| JP4956932B2 (en) * | 2005-08-08 | 2012-06-20 | セイコーエプソン株式会社 | Image display device and image display method |
| JP2008268717A (en) * | 2007-04-24 | 2008-11-06 | Renesas Technology Corp | Driving circuit of image display device, and image display method |
| KR100944595B1 (en) * | 2007-04-24 | 2010-02-25 | 가부시끼가이샤 르네사스 테크놀로지 | Display device, display driver, image display method, electronic apparatus and image display driver |
| JP5314936B2 (en) * | 2007-06-22 | 2013-10-16 | ルネサスエレクトロニクス株式会社 | Display device and display device driving circuit |
| KR101245664B1 (en) * | 2007-10-25 | 2013-03-20 | 엘지디스플레이 주식회사 | Driving method for liquid crystal display device |
| EP2221801A4 (en) | 2007-12-20 | 2011-02-23 | Sharp Kk | Display device |
| JP4591724B2 (en) * | 2008-05-14 | 2010-12-01 | セイコーエプソン株式会社 | Display device and display method |
| JP5382317B2 (en) * | 2009-03-12 | 2014-01-08 | セイコーエプソン株式会社 | Display device, program, and information storage medium |
| JP6175810B2 (en) * | 2013-03-06 | 2017-08-09 | セイコーエプソン株式会社 | Image processing apparatus, projector, and image processing method |
| KR102171467B1 (en) * | 2014-11-07 | 2020-11-02 | 엘지디스플레이 주식회사 | Data clipping method and device, and display device using the same |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06113195A (en) * | 1992-09-29 | 1994-04-22 | Canon Inc | Video camera device |
| JPH06332399A (en) * | 1993-05-19 | 1994-12-02 | Fujitsu General Ltd | Method for controlling electronic display and device therefor |
| JP2000098995A (en) * | 1998-09-22 | 2000-04-07 | Mitsubishi Electric Corp | Automatic picture quality correcting device |
| JP3560321B2 (en) * | 1999-09-24 | 2004-09-02 | 株式会社日立国際電気 | Signal processing method and its device |
| JP2003121926A (en) * | 2001-10-12 | 2003-04-23 | Seiko Epson Corp | Projection type display device and its driving method |
| JP2003162002A (en) * | 2001-11-26 | 2003-06-06 | Seiko Epson Corp | Projection type display device and display device and its driving method |
| JP3997786B2 (en) * | 2002-01-24 | 2007-10-24 | ソニー株式会社 | Imaging device, display device, image recording device, and image quality correction method |
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- 2003-09-29 JP JP2003338305A patent/JP2005107019A/en active Pending
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