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Division method of motive object in video sequence

A technology of moving objects and video sequences, applied in the direction of digital video signal modification, TV, electrical components, etc., can solve problems such as poor effect, large amount of calculation, waste of computing resources, etc.

Inactive Publication Date: 2007-12-12
ZTE CORP
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Problems solved by technology

The motion of the moving object is different from the background. The spatial consistency method simply uses the spatial information to segment the background without knowing the motion information, which will waste a lot of computing resources. Therefore, the change detection method is more efficient, but the traditional change detection The method will be affected by factors such as object movement speed, shadow effect, background misjudgment, etc. The commonly used methods to remove these unfavorable factors require a large amount of calculation and the effect is not good

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  • Division method of motive object in video sequence
  • Division method of motive object in video sequence
  • Division method of motive object in video sequence

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Embodiment Construction

[0051] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0052] As shown in Figure 1(a) and Figure 1(b), it includes two parts: the initialization of the moving object and the updating of the moving object.

[0053] Frame difference and its statistical analysis:

[0054] The grayscale image of the current frame in the video sequence and the grayscale image of the previous frame are calculated by the formula (1) to obtain the frame difference image of the two frames, and then each pixel in the frame difference image is calculated according to the formula (2), (3) , (4) calculate and obtain a binary moving image, obtain the binary moving image by judging the coverage and concentration of pixels equal to 1 in the image:

[0055] a) If the coverage of pixels equal to 1 in the binary moving image is relatively concentrated in certain areas of the image, the binary moving image is ...

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Abstract

The invention discloses a dividing method of moving object in video sequence. Aiming at resolving problem of current technique is affected by speed of object, shadow effect, background miscarriage of justice. The dividing method of moving object in video sequence is analyzing current frame gray image and former frame gray image, global movement estimation, modality filter, edge examination, movement object examination and post treatment, background image generation, global movement compensation, commutation scene examination, movement object track, background image renewal, by adopting said method, lesser calculation quality can overcome disadvantageous factors of shadow effect, background miscarriage of justice, better result can be obtained.

Description

technical field [0001] The invention relates to the MPEG-4 standard of digital video compression technology in the field of multimedia communication, in particular to the video object segmentation method in the MPEG-4 standard. Background technique [0002] The traditional video compression standards MPEG-1, MPEG-2, H.261, and H.263 all use a hybrid rectangular frame compression coding method that combines predictive coding with motion compensation and DCT transform coding. Segmentation or analysis is a low-level compression coding technique. With the rapid growth of multimedia applications and content-based interaction requirements, these video standards based on frame compression coding technology cannot meet the requirements. Therefore, the MPEG expert group has formulated a new international standard for content-based video compression - MPEG-4, By introducing the concepts of Video Object (VO) and Video Object Plane (VOP), each frame of the input video sequence is divid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N19/117H04N19/139H04N19/142H04N19/157H04N19/527H04N19/87
Inventor 鲁照华费佩燕
Owner ZTE CORP
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