CN103024315A - Method for adjusting television picture size in real time according to video content - Google Patents
Method for adjusting television picture size in real time according to video content Download PDFInfo
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- CN103024315A CN103024315A CN2012105488510A CN201210548851A CN103024315A CN 103024315 A CN103024315 A CN 103024315A CN 2012105488510 A CN2012105488510 A CN 2012105488510A CN 201210548851 A CN201210548851 A CN 201210548851A CN 103024315 A CN103024315 A CN 103024315A
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Abstract
The invention discloses a method for adjusting a television picture size in real time according to video content. The method includes the steps: a, setting a fringe area S; b, judging whether the video content in the fringe area S of a current television picture has black edges or not and cutting the video content in the fringe area S if the current television picture has the black edges; c, repeating the step b until the video content in the fringe area S of the current television picture has no black edges; d, after the step c, continuing to judge whether the video content in the fringe area S outside the current television picture has the black edges or not and adding the video content in the fringe area S to the current television picture if not; and e, repeating the step d until the video content in the fringe area S outside the current television picture has the black edges. The method can be used for transforming signal proportions of the television picture and decreasing picture deformation caused by transformation.
Description
Technical field
The invention belongs to the digital image processing techniques field, be specifically related to a kind of method of adjusting in real time the television image size according to video content.
Background technology
At present the main flow TV all is the screen of 16:9 high definition basically, and resolution is 1366*768 or 1920*1080, but the signal format that we watch also major part be Phase Alternation Line system or the TSC-system signal of 4:3.The signal of 4:3 is put into 16:9, distortion will appear in picture, and it itself is exactly 16:9 that a lot of videos are particularly arranged, but because the transformat demand, in the artificial increase of transmitting terminal black surround, make the video of 16:9 become 4:3.The present processing mode of this situation is with the part of black surround as video, picture is stretched again, and like this, the problem of picture distortion is just more serious.
Summary of the invention
Technical problem to be solved by this invention is: propose a kind of method of adjusting in real time the television image size according to video content, can reduce the distortion of picture, solve the serious technological deficiency of picture distortion in the conventional art.
The present invention solves the problems of the technologies described above the technical scheme that adopts:
A kind of method of adjusting in real time the television image size according to video content may further comprise the steps:
A., fringe region S is set;
B. judge whether the video content in the TV picture fringe region S is black surround, if black surround then should crop by S interior video content in zone;
C. repeating step b is not until the video content in the TV picture fringe region S is black surround;
D. behind completing steps c, continue to judge whether the interior video content of fringe region S of TV picture outside is black surround, if be not black surround, then should be increased to the TV picture by S interior video content in zone;
E. repeating step d is until the video content in the fringe region S of TV picture outside is black surround.
The invention has the beneficial effects as follows: because current picture dimension is adjusted in real time according to video content, both removed useless black surround, kept in real time again useful video content, facilitate like this when carrying out the conversion of signal format ratio, just can avoid useless black surround on the impact of whole picture, can carry out conversion for useful video content by emphasis, thereby reduce the distortion of picture.
Description of drawings
Fig. 1 is flow chart of the present invention.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
It is the pal signal of 720*576 that present user watches maximum signal format, and ratio is 4:3.2, and the TSC-system signal of 720*480 is also arranged under the AV passage, and ratio is 4:2.7.We are unified as the processing of 4:3 signal format for these two kinds of signals.
If realize the 16:9 full screen display in the situation that do not sacrifice picture, horizontal picture must be stretched about 33%.Like this anamorphose is more serious.
If be displayed in full screen keeping under the prerequisite of image scaled, just must carry out cutting to the vertical direction picture, the cutting ratio is 25%.Like this image impairment is larger.
Therefore we will find a balance point, allow distortion and image impairment all in user's acceptable scope.
Such as Fig. 1, take following steps:
Step 1 arranges fringe region S:
Fringe region S is set to 2% of the top of whole current picture and bottom in the present embodiment, and this zone is used for judging the size in video black surround zone.
Step 2, judge whether video content has black surround:
The APL mean flow rate of the video content in television set in the fringe region S of the current picture of cycle detection, the APL mean flow rate represents the darkest with 0,100 expressions are the brightest, if the value of APL mean flow rate in 2 minutes is less than 5, just think that this regional video content is black surround, otherwise think that video has image.
If the video content of judging in this fringe region S is black surround, then this part image cropping is fallen.
Step 3: repeating step 2, until video does not have till the black surround.
Step 4: whether after cutting away black surround, also will continue to judge has image to reappear in the picture that cuts away.To detect top and bottom outside 2% area image always, if the image in this 2% zone is not black surround, just this part image is shown to picture.
Step 5: repeating step 4, until detect till the black surround.
Step 6. increases the right and left image:
The fidelity factor of the image of usually adjusting is 96%, in order to increase the image of the right and left, the fidelity factor on the vertical direction is kept 96% constant, and the fidelity factor of adjusting the right and left is 98%, general like this 2% the horizontal direction image that increased.
Step 7. utilizes non-linear zoom to guarantee that central area anamorphose is less.
When carrying out 4:3 to the Signal form translate of 16:9, adopt the non-linear zoom mode, scaling strengthens from the central area to both sides gradually, and the central area distortion is dwindled as much as possible.
In the present embodiment whole image is divided into 10 sections, more near 1:1, more the scaling of fringe region part is larger the closer to the image scaling ratio of central area.Guaranteed that like this central area anamorphose is few.
In the present embodiment, by eliminating black surround, the image that increases the right and left, the distortion that the non-linear zoom various ways has reduced image, because real-time tracking image content constantly, non-black surround image is added picture in real time, therefore, the picture loss is also very little, thereby has found a balance point, allows distortion and image impairment all in user's acceptable scope.
Claims (4)
1. method of adjusting in real time the television image size according to video content is characterized in that may further comprise the steps:
A., fringe region S is set;
B. judge whether the video content in the TV picture fringe region S is black surround, if black surround then should crop by S interior video content in zone;
C. repeating step b is not until the video content in the TV picture fringe region S is black surround;
D. behind completing steps c, continue to judge whether the interior video content of fringe region S of TV picture outside is black surround, if be not black surround, then should be increased to the TV picture by S interior video content in zone;
E. repeating step d is until the video content in the fringe region S of TV picture outside is black surround.
2. a kind of method of adjusting in real time the television image size according to video content according to claim 1 is characterized in that the described black surround that determines whether is to judge according to the APL mean flow rate in described zone.
3. a kind of method of adjusting in real time the television image size according to video content according to claim 1 is characterized in that behind described step e, at the right and left increase video content of television image.
4. a kind of method of adjusting in real time the television image size according to video content according to claim 1 is characterized in that behind described step e television image being carried out convergent-divergent, and scaling strengthens from the central area to both sides gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105488510A CN103024315A (en) | 2012-12-17 | 2012-12-17 | Method for adjusting television picture size in real time according to video content |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105488510A CN103024315A (en) | 2012-12-17 | 2012-12-17 | Method for adjusting television picture size in real time according to video content |
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| CN103024315A true CN103024315A (en) | 2013-04-03 |
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| CN2012105488510A Pending CN103024315A (en) | 2012-12-17 | 2012-12-17 | Method for adjusting television picture size in real time according to video content |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105264904A (en) * | 2013-06-19 | 2016-01-20 | Lg电子株式会社 | Signal transmitting and receiving device and method of controlling said device |
| WO2016023307A1 (en) * | 2014-08-15 | 2016-02-18 | 京东方科技集团股份有限公司 | Display device, display system and display method |
| CN108012180A (en) * | 2017-12-06 | 2018-05-08 | 深圳Tcl新技术有限公司 | Program broadcasting method, TV and storage medium |
| CN108614676A (en) * | 2018-04-20 | 2018-10-02 | Oppo广东移动通信有限公司 | screen display method, device and terminal device |
| US11134302B2 (en) | 2017-02-27 | 2021-09-28 | Interdigital Madison Patent Holdings, Sas | Method and apparatus for re-using black border regions of a digital TV screen |
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| US5956092A (en) * | 1993-10-20 | 1999-09-21 | Victor Company Of Japan, Ltd. | Television receiver with adjustable frame size |
| CN101753877A (en) * | 2008-12-09 | 2010-06-23 | 深圳Tcl新技术有限公司 | Television zoom mode adjustment method and television |
| CN102244745A (en) * | 2010-05-11 | 2011-11-16 | 北京四达时代软件技术股份有限公司 | Method and device for adjusting image integrity of television |
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2012
- 2012-12-17 CN CN2012105488510A patent/CN103024315A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5956092A (en) * | 1993-10-20 | 1999-09-21 | Victor Company Of Japan, Ltd. | Television receiver with adjustable frame size |
| CN101753877A (en) * | 2008-12-09 | 2010-06-23 | 深圳Tcl新技术有限公司 | Television zoom mode adjustment method and television |
| CN102244745A (en) * | 2010-05-11 | 2011-11-16 | 北京四达时代软件技术股份有限公司 | Method and device for adjusting image integrity of television |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105264904A (en) * | 2013-06-19 | 2016-01-20 | Lg电子株式会社 | Signal transmitting and receiving device and method of controlling said device |
| WO2016023307A1 (en) * | 2014-08-15 | 2016-02-18 | 京东方科技集团股份有限公司 | Display device, display system and display method |
| US9972276B2 (en) | 2014-08-15 | 2018-05-15 | Boe Technology Group Co., Ltd. | Display device, display system and display method |
| US11134302B2 (en) | 2017-02-27 | 2021-09-28 | Interdigital Madison Patent Holdings, Sas | Method and apparatus for re-using black border regions of a digital TV screen |
| CN108012180A (en) * | 2017-12-06 | 2018-05-08 | 深圳Tcl新技术有限公司 | Program broadcasting method, TV and storage medium |
| CN108012180B (en) * | 2017-12-06 | 2020-12-08 | 深圳Tcl新技术有限公司 | Program playing method, television and storage medium |
| CN108614676A (en) * | 2018-04-20 | 2018-10-02 | Oppo广东移动通信有限公司 | screen display method, device and terminal device |
| CN108614676B (en) * | 2018-04-20 | 2021-06-18 | Oppo广东移动通信有限公司 | Screen display method and device and terminal equipment |
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Application publication date: 20130403 |