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Bidirectional motion estimation deinterlacing method

A two-way motion estimation and de-interlacing technology, applied in the field of de-interlacing, achieves the effect of improving interpolation accuracy and reducing data volume

Active Publication Date: 2017-01-04
廊坊市华之邦科技服务有限公司
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a new bi-directional motion estimation de-interlacing method that can provide better de-interlacing effect under the condition of appropriate computational complexity

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Embodiment approach

[0048] 1. For the first field of the interlaced scanning video sequence, the line average interpolation algorithm is used for interpolation to obtain the reconstructed image, and a field to be interpolated and two reference frames are selected, wherein the reference frame is the previous frame adjacent to the field to be interpolated in time. One reconstructed image and the latter reconstructed image, the latter reconstructed image is firstly interpolated using the row averaging algorithm. The calculation expression of the row average algorithm is as follows, where I LA (i,j) is the interpolation obtained by using the row average algorithm, I(i-1,j) is the pixel value of the previous row adjacent to the point to be interpolated, and I(i+1,j) is the pixel value adjacent to the point to be interpolated The next row of pixel values.

[0049] I LA (i,j)=[I(i-1,j)+I(i+1,j)]÷2 (2)

[0050] 2. Select the block to be matched from the field to be interpolated. The size of the block ...

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Abstract

A bidirectional motion estimation deinterlacing method: carry out interpolations by adopting the filed information to get the reconstructed images and select two reference frames and a field to be interpolated for the first interlaced video sequences. Select the block to match from the field to be interlaced, and select a rectangular search window from each of the two reference frames. The positon of the matching block shall be corresponding to the center position of those two rectangular search windows. Discover the best matching blocks in those two rectangular search windows respectively, and obtain the final interpolation value based on the absolute difference of those two best matching blocks and the motion compensation value. Process the boundary condition of the filed to be interpolated. The bidirectional motion estimation deinterlacing method effectively solves the problem of error propagation and relatively low interpolation accuracy by using the traditional deinterlacing algorithm based on overlapped block motion compensation. It is able to provide a good deinterlacing effect in the case of an appropriate computational complexity.

Description

technical field [0001] The invention relates to a de-interlacing method in video processing. In particular, it concerns a bi-directional motion estimation deinterlacing method. Background technique [0002] In order to save transmission bandwidth, some mainstream broadcast television systems use an interlaced format to process video signals to be transmitted. However, interlacing can cause visual defects such as edge flicker, jaggies, and field-to-field aliasing. The current technology is becoming more and more mature, and mainstream video playback devices support progressive scanning. Therefore, it is necessary to convert the interlaced video source into a progressive video source. This conversion process is called deinterlacing. [0003] For de-interlacing research, predecessors proposed a variety of de-interlacing algorithms, which can be roughly divided into two categories: non-motion compensation algorithms and motion compensation algorithms. [0004] Non-motion comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/01H04N5/14
CPCH04N5/145H04N7/012H04N7/0142
Inventor 张涛陈有志
Owner 廊坊市华之邦科技服务有限公司
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