WO2010066072A1 - 图像动作检测方法及装置 - Google Patents
图像动作检测方法及装置 Download PDFInfo
- Publication number
- WO2010066072A1 WO2010066072A1 PCT/CN2008/073374 CN2008073374W WO2010066072A1 WO 2010066072 A1 WO2010066072 A1 WO 2010066072A1 CN 2008073374 W CN2008073374 W CN 2008073374W WO 2010066072 A1 WO2010066072 A1 WO 2010066072A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- image
- predetermined
- static
- motion detecting
- difference
- Prior art date
Links
- 230000033001 locomotion Effects 0.000 title claims abstract description 28
- 238000001514 detection method Methods 0.000 title claims abstract description 5
- 230000003068 static effect Effects 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims description 20
- 230000000694 effects Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000005314 correlation function Methods 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/20—Analysis of motion
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/20—Analysis of motion
- G06T7/254—Analysis of motion involving subtraction of images
Definitions
- the present invention relates to an image processing technique, and more particularly to a method and apparatus for detecting motion of a real-time video image.
- a common method for motion detection is to select a static image of each frame before and after the action is compared, and if the two images are inconsistent, it is determined that an action occurs in the monitored picture.
- Another method is generally used to calculate the degree of correlation between the two images.
- the basic principle is to determine the similarity of the image by calculating the correlation function of some attributes of the two images. For example, the pair is in two The number of colors on the pixel at the same position of the image is correlated.
- One of the objects of the present invention is to provide a relatively simple and fast image motion detecting method and apparatus for judging the difference of images by directly comparing the sizes of the files of the two images before and after to obtain a conclusion as to whether or not an action has occurred.
- An image motion detecting method includes the steps of:
- An image motion detecting apparatus includes:
- the image acquisition module is configured to collect a static image f before the action occurs. And at predetermined intervals Collecting a still image fd;
- a storage module for storing a static image f before the action occurs. ; as well as
- Comparison module for comparing static images f. Whether the difference between the file size of fd and fd is greater than a predetermined threshold, and is used when the static image f. When the difference between the file sizes of fd and fd is larger than the predetermined threshold, information indicating that the detected image in the predetermined interval has an action occurs is output.
- the motion detecting method and apparatus of the present invention directly compares the file sizes of the two images before and after to determine the difference of the images, thereby obtaining whether or not an action occurs.
- the algorithm is simpler and does not cause
- the detected picture size or the number of pixels affects the amount of computation, thereby reducing the system load and reducing the complexity and cost of the system.
- Figure 1 shows an example of two still images acquired before and after an action in a monitor screen
- FIG. 2 is a flow chart showing the operation of an embodiment of the motion detecting method of the present invention
- FIG. 3 is a block diagram showing the structure of a monitoring system using the motion detecting apparatus of an embodiment of the present invention.
- the present invention uses a static image comparison method to determine whether or not an action occurs in the monitor screen. First, it is necessary to collect a still image for comparison from the video of the monitor screen. Taking the image shown in FIG. 1 as an example, the still image collected on the left side is the picture before the action occurs, and the static image collected on the right side is the picture after the action occurs. Of course, it is also possible to set the detected area to be a part of the picture, such as the white dotted line area in FIG. 1, and it is considered that an action occurs only when a change occurs in the picture of the area. The still image collected at this time is only required to include a white dotted area. Images can be saved in common formats such as JPG, GIF or BMP.
- a specific motion detecting method of the present invention can be referred to FIG. 2, and a static image f before the occurrence of an action is first collected from the monitored screen. And it is stored as a reference object, that is, step S101. Then in step S102, a still image fd is acquired at predetermined intervals.
- the predetermined interval can be set according to the actual application environment, for example, every 2 seconds or every 48 frames can be set.
- the invention uses a comparison of S d and S in step S103.
- the method to determine if an action has occurred, ie when S d and S. When the difference is not zero, it can be judged that the content of f d is compared with f. A change has taken place.
- a threshold can be set.
- S t or S t ' ie when
- S t or s t ' The magnitude of the threshold S t or s t ' can be set according to the size of the screen being monitored or the size of the object that can be foreseen to be actuated. Basically, if the monitored picture or the object that can be foreseen to be an action is larger, the threshold can be set accordingly. If it is determined in step S103 that an action has occurred, a signal may be output to trigger an action such as a video or an alarm (step S104); if it is determined that no action has occurred, the process returns to step S102 to wait for the acquisition of the next image.
- a signal may be output to trigger an action such as a video or an alarm (step S104); if it is determined that no action has occurred, the process returns to step S102 to wait for the acquisition of the next image.
- the monitoring system mainly includes a camera 20, a motion detecting device 10, and a video recording device 30.
- the motion detecting device 10 mainly includes a video capturing module 11, a storage module 12, and a comparison module 13.
- the video capture module 11 is configured to perform image acquisition on the screen monitored by the camera 20, including collecting the static image fo before the action occurs and storing it in the storage module 12, and collecting the static image fd according to a predetermined interval.
- the storage module 12 may be a buffer dedicated to the motion detecting device 10 or a part of the memory shared with the video recording device 30.
- the comparison module 13 compares the file size So of the still image fo in the storage module 12 with the file size S d of the still image f d collected by the video capture module 11, that is, whether or not there is an IS. -S d
- the comparison module 31 outputs a trigger signal to the video device 30.
- the video device 30 is simultaneously connected to the camera 20. After receiving the trigger signal from the comparison module 31, the video device 30 starts recording the picture captured by the camera.
- Fig. 3 is only one embodiment exemplified for specifically explaining the application of the motion detecting device of the present invention, and the application of the present invention is of course not limited thereto.
- the video device 30 can be replaced with an alarm device or other device.
- the motion detecting method and apparatus of the present invention judges the difference of the image by directly comparing the file sizes of the two images before and after, thereby obtaining a conclusion as to whether or not an action occurs, which corresponds to the prior art by Compared with the point-by-point correlation operation to judge the difference of the image, the algorithm is simpler and does not affect the operation due to the detected picture size or the number of pixels. This reduces the burden on the system and reduces the complexity and cost of the system.
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Image Analysis (AREA)
- Closed-Circuit Television Systems (AREA)
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011538818A JP2012511194A (ja) | 2008-12-08 | 2008-12-08 | 画像の動き検出方法および装置 |
PCT/CN2008/073374 WO2010066072A1 (zh) | 2008-12-08 | 2008-12-08 | 图像动作检测方法及装置 |
EP08878672A EP2375382A1 (en) | 2008-12-08 | 2008-12-08 | Image motion detection method and apparatus |
US13/132,513 US20110234912A1 (en) | 2008-12-08 | 2008-12-08 | Image activity detection method and apparatus |
KR1020117013009A KR20110102321A (ko) | 2008-12-08 | 2008-12-08 | 이미지 움직임 검출 방법 및 장치 |
CN2008801321962A CN102232226A (zh) | 2008-12-08 | 2008-12-08 | 图像动作检测方法及装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2008/073374 WO2010066072A1 (zh) | 2008-12-08 | 2008-12-08 | 图像动作检测方法及装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010066072A1 true WO2010066072A1 (zh) | 2010-06-17 |
Family
ID=42242295
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2008/073374 WO2010066072A1 (zh) | 2008-12-08 | 2008-12-08 | 图像动作检测方法及装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20110234912A1 (zh) |
EP (1) | EP2375382A1 (zh) |
JP (1) | JP2012511194A (zh) |
KR (1) | KR20110102321A (zh) |
CN (1) | CN102232226A (zh) |
WO (1) | WO2010066072A1 (zh) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103024352A (zh) * | 2012-12-07 | 2013-04-03 | 康佳集团股份有限公司 | 一种基于码率突变的视频监控方法和系统 |
JP6451133B2 (ja) * | 2014-08-01 | 2019-01-16 | 株式会社リコー | 異常検知装置、異常検知方法、異常検知システム、及びプログラム |
US11074679B2 (en) | 2017-02-06 | 2021-07-27 | Huawei Technologies Co., Ltd. | Image correction and display method and device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN1506686A (zh) * | 2002-12-09 | 2004-06-23 | 北京中星微电子有限公司 | 运动图像检测方法 |
CN1632593A (zh) * | 2004-12-31 | 2005-06-29 | 北京中星微电子有限公司 | 运动图像检测方法和电路 |
CN2788258Y (zh) * | 2004-12-31 | 2006-06-14 | 北京中星微电子有限公司 | 运动图像检测电路 |
CN101002232A (zh) * | 2004-08-12 | 2007-07-18 | 古鲁洛吉克微系统公司 | 视频图像的处理 |
CN101179725A (zh) * | 2007-12-12 | 2008-05-14 | 北京中星微电子有限公司 | 一种运动检测方法与装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5872598A (en) * | 1995-12-26 | 1999-02-16 | C-Cube Microsystems | Scene change detection using quantization scale factor rate control |
JPH09205640A (ja) * | 1996-01-25 | 1997-08-05 | Matsushita Electric Ind Co Ltd | 遠隔監視システム |
US6804295B1 (en) * | 2000-01-07 | 2004-10-12 | International Business Machines Corporation | Conversion of video and audio to a streaming slide show |
JP2001275105A (ja) * | 2000-03-24 | 2001-10-05 | Toenec Corp | 画像圧縮伝送システム |
US8169547B2 (en) * | 2005-08-09 | 2012-05-01 | Gurulogic Microsystems Oy | Processing of video image |
-
2008
- 2008-12-08 EP EP08878672A patent/EP2375382A1/en not_active Withdrawn
- 2008-12-08 CN CN2008801321962A patent/CN102232226A/zh active Pending
- 2008-12-08 WO PCT/CN2008/073374 patent/WO2010066072A1/zh active Application Filing
- 2008-12-08 JP JP2011538818A patent/JP2012511194A/ja active Pending
- 2008-12-08 KR KR1020117013009A patent/KR20110102321A/ko active Search and Examination
- 2008-12-08 US US13/132,513 patent/US20110234912A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1506686A (zh) * | 2002-12-09 | 2004-06-23 | 北京中星微电子有限公司 | 运动图像检测方法 |
CN101002232A (zh) * | 2004-08-12 | 2007-07-18 | 古鲁洛吉克微系统公司 | 视频图像的处理 |
CN1632593A (zh) * | 2004-12-31 | 2005-06-29 | 北京中星微电子有限公司 | 运动图像检测方法和电路 |
CN2788258Y (zh) * | 2004-12-31 | 2006-06-14 | 北京中星微电子有限公司 | 运动图像检测电路 |
CN101179725A (zh) * | 2007-12-12 | 2008-05-14 | 北京中星微电子有限公司 | 一种运动检测方法与装置 |
Also Published As
Publication number | Publication date |
---|---|
CN102232226A (zh) | 2011-11-02 |
KR20110102321A (ko) | 2011-09-16 |
EP2375382A1 (en) | 2011-10-12 |
JP2012511194A (ja) | 2012-05-17 |
US20110234912A1 (en) | 2011-09-29 |
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