CA2408435A1 - Method for testing video sequences - Google Patents
Method for testing video sequences Download PDFInfo
- Publication number
- CA2408435A1 CA2408435A1 CA002408435A CA2408435A CA2408435A1 CA 2408435 A1 CA2408435 A1 CA 2408435A1 CA 002408435 A CA002408435 A CA 002408435A CA 2408435 A CA2408435 A CA 2408435A CA 2408435 A1 CA2408435 A1 CA 2408435A1
- Authority
- CA
- Canada
- Prior art keywords
- frame
- video sequence
- pixels
- comparing
- iii
- 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
- 239000011159 matrix material Substances 0.000 abstract 1
- 238000010998 test method Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/004—Diagnosis, testing or measuring for television systems or their details for digital television systems
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
A non-intrusive test method for video sequences is described that correlates a number of quality indicators derived from a sequence with a matrix of constants to predict a quality score for the sequence.
Claims (4)
1 . A method of comparing two frames from a video sequence, the method comprising the steps of;
(i) taking a first frame from said video sequence;
(ii) taking the subsequent frame from said sequence;
(iii) comparing one pixel from the first frame with the corresponding pixel from the subsequent frame; and (iv) repeating step (iii) for all pixels in a test area of the first frame.
(i) taking a first frame from said video sequence;
(ii) taking the subsequent frame from said sequence;
(iii) comparing one pixel from the first frame with the corresponding pixel from the subsequent frame; and (iv) repeating step (iii) for all pixels in a test area of the first frame.
2. A method according to claim 1 wherein the luminance of the corresponding pixels is compared.
3. A method according to claim 1 wherein if the results of the comparison stage indicate a large number of substantially equal pixels then a dropped frame is inferred.
4. A method according to claim 1 wherein if the results of the comparison stage indicate a small number of substantially equal pixels then a scene cut is inferred.
4. A method of assessing the quality of a video sequence, the method comprising the steps of (i) comparing all of the frames in the video sequence with the subsequent frame in accordance with claim 1 (ii) ignoring those comparisons indicating a dropped frame or a scene cut (iii) calculating a quality figure from the remaining comparison values
4. A method of assessing the quality of a video sequence, the method comprising the steps of (i) comparing all of the frames in the video sequence with the subsequent frame in accordance with claim 1 (ii) ignoring those comparisons indicating a dropped frame or a scene cut (iii) calculating a quality figure from the remaining comparison values
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0012992.4 | 2000-05-26 | ||
| GBGB0012992.4A GB0012992D0 (en) | 2000-05-26 | 2000-05-26 | Test method |
| PCT/GB2001/002374 WO2001091473A1 (en) | 2000-05-26 | 2001-05-29 | Method for testing video sequences |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2408435A1 true CA2408435A1 (en) | 2001-11-29 |
| CA2408435C CA2408435C (en) | 2010-11-02 |
Family
ID=9892529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2408435A Expired - Fee Related CA2408435C (en) | 2000-05-26 | 2001-05-29 | Method for testing video sequences |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7233348B2 (en) |
| EP (1) | EP1290900A1 (en) |
| AU (1) | AU5865201A (en) |
| CA (1) | CA2408435C (en) |
| GB (1) | GB0012992D0 (en) |
| WO (1) | WO2001091473A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1729529A1 (en) * | 2005-06-02 | 2006-12-06 | BRITISH TELECOMMUNICATIONS public limited company | Video signal loss detection |
| WO2008077160A1 (en) * | 2006-12-22 | 2008-07-03 | Mobilkom Austria Aktiengesellschaft | Method and system for video quality estimation |
| US20090309977A1 (en) * | 2008-06-12 | 2009-12-17 | Microsoft Corporation | Benchmarking and calibrating video quality assessment tools |
| US8294772B2 (en) * | 2009-01-29 | 2012-10-23 | Pelco, Inc. | System and method for monitoring connections within an analog video system |
| CN103339951B (en) * | 2010-11-30 | 2016-01-20 | 汤姆逊许可公司 | The method and apparatus of video quality is measured according to frame losing pattern |
| CN103839263B (en) * | 2014-02-26 | 2016-07-06 | 宁波大学 | A kind of stereo-picture depth perception method for objectively evaluating |
| US10979744B2 (en) | 2017-11-03 | 2021-04-13 | Nvidia Corporation | Method and system for low latency high frame rate streaming |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5446492A (en) | 1993-01-19 | 1995-08-29 | Wolf; Stephen | Perception-based video quality measurement system |
| US5589884A (en) * | 1993-10-01 | 1996-12-31 | Toko Kabushiki Kaisha | Adaptive quantization controlled by scene change detection |
| US5627765A (en) * | 1994-07-25 | 1997-05-06 | Avid Technology, Inc. | Method and apparatus for compressing and analyzing video and for creating a reference video |
| US5754700A (en) * | 1995-06-09 | 1998-05-19 | Intel Corporation | Method and apparatus for improving the quality of images for non-real time sensitive applications |
| DE19521408C1 (en) | 1995-06-13 | 1996-12-12 | Inst Rundfunktechnik Gmbh | Objective evaluation of two or three dimensional pictures |
| GB9604315D0 (en) | 1996-02-29 | 1996-05-01 | British Telecomm | Training process |
| US6119083A (en) | 1996-02-29 | 2000-09-12 | British Telecommunications Public Limited Company | Training process for the classification of a perceptual signal |
| US5767922A (en) * | 1996-04-05 | 1998-06-16 | Cornell Research Foundation, Inc. | Apparatus and process for detecting scene breaks in a sequence of video frames |
| US6014183A (en) * | 1997-08-06 | 2000-01-11 | Imagine Products, Inc. | Method and apparatus for detecting scene changes in a digital video stream |
| US6075561A (en) * | 1998-02-20 | 2000-06-13 | Tektronix, Inc. | Low duty-cycle transport of video reference images |
| US6539055B1 (en) * | 1999-12-03 | 2003-03-25 | Intel Corporation | Scene change detector for video data |
-
2000
- 2000-05-26 GB GBGB0012992.4A patent/GB0012992D0/en not_active Ceased
-
2001
- 2001-05-29 US US10/275,474 patent/US7233348B2/en not_active Expired - Lifetime
- 2001-05-29 EP EP01931970A patent/EP1290900A1/en not_active Withdrawn
- 2001-05-29 WO PCT/GB2001/002374 patent/WO2001091473A1/en active Application Filing
- 2001-05-29 CA CA2408435A patent/CA2408435C/en not_active Expired - Fee Related
- 2001-05-29 AU AU58652/01A patent/AU5865201A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| AU5865201A (en) | 2001-12-03 |
| US7233348B2 (en) | 2007-06-19 |
| GB0012992D0 (en) | 2000-07-19 |
| CA2408435C (en) | 2010-11-02 |
| EP1290900A1 (en) | 2003-03-12 |
| WO2001091473A1 (en) | 2001-11-29 |
| US20030142214A1 (en) | 2003-07-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20130529 |