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Detecting method and device of stationary object and motion background area based on motion vector projection

A motion vector and motion background technology, applied in the field of image processing, can solve problems such as poor image quality, and achieve the effect of improving image processing quality

Active Publication Date: 2014-09-10
SOLOMON SYSTECH SHENZHEN LTD
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  • Claims
  • Application Information

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Problems solved by technology

If these two blocks are used to interpolate the intermediate frame, then such interpolation will produce bad image quality

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  • Detecting method and device of stationary object and motion background area based on motion vector projection
  • Detecting method and device of stationary object and motion background area based on motion vector projection
  • Detecting method and device of stationary object and motion background area based on motion vector projection

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Embodiment Construction

[0039] The present invention will be described in detail below in conjunction with various embodiments shown in the drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.

[0040] ginseng image 3 Shown is a motion vector projection-based detection method for stationary objects and moving background regions in one embodiment of the present invention, which includes the following steps:

[0041] S1. Perform motion estimation, and obtain a motion vector of each block in the current frame. Motion vectors include backward motion vectors and forward motion vectors;

[0042] S2. Perform motion vector projection on the current frame plane according to the motion vector MV of the current block to obtain a past projected motion vector and a next projected motion vector. ginseng Figure 4 As...

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Abstract

The invention provides a detecting method and a device of a stationary object and a motion background area based on motion vector projection. The method comprises the following steps: S1, carrying out motion estimation and obtaining a motion vector of each block in a current frame; S2, carrying out motion vector projection on a current frame plane according to the motion vector MV of a current block, so as to obtain a past projection motion vector and a next projection motion vector; S3, obtaining the motion vectors of the block having the past projection motion vector and next projection motion vector as the MV past and MV next; S4, comparing the consistency of the MV past and MV next and the motion vector MV of the current block, and judging the covering and revealing phenomenon of the stationary object and the motion background area. According to the invention, the consistency of the motion vector MV past and MV next and the motion vector MV of the current block is compared along a motion tracking line in the current frame, thereby determining whether covering and revealing phenomenon happens and increasing image process quality at edges of an object.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a method and device for detecting stationary objects and moving background regions based on motion vector projection. Background technique [0002] For hardware-implemented frame rate conversion, motion estimation and motion compensation techniques are usually used. Motion estimation is mainly to find the best matching block in the current frame and the previous frame or the next frame. The simple metric of the best match is the smallest numerical difference between them. After the best matching block is found, its displacement from the current block is recorded as a motion vector, which is later used in the motion compensation process to obtain the best matching block. ginseng figure 1 As shown, there are two types of motion vectors, one is the backward motion vector, which is obtained by searching for a matching block in the previous frame, that is, for the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/20
Inventor 周一士沈操崔峰
Owner SOLOMON SYSTECH SHENZHEN LTD
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