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Speed conversion processing module and method of high definition digital video frame

A technology of rate conversion and processing methods, which is applied in the field of digital video frame rate conversion processing modules, and can solve the problems of high complexity of motion estimation and compensation algorithms for frame rate conversion

Inactive Publication Date: 2011-07-20
BEIJING WISDOM ELVES TECH
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] - The complexity of motion estimation and compensation algorithms required for frame rate conversion is still too high

Method used

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  • Speed conversion processing module and method of high definition digital video frame
  • Speed conversion processing module and method of high definition digital video frame
  • Speed conversion processing module and method of high definition digital video frame

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Embodiment Construction

[0021] figure 1 The outline block diagram of the frame rate conversion processing module according to the present invention is described, and the processing of the high-definition digital video stream in the present invention mainly includes the following four modules:

[0022] 1) Film pattern recognition preprocessing module 100 First, in this preprocessing module 100, carry out film pattern recognition preprocessing to high-definition digital video stream, utilize film pattern recognition algorithm to identify which category the video source belongs to and which pull-down format, for example , but not limited to: 3:2, 2:2, 6:4, 8:7 and other pull-down formats; then, according to different pull-down formats, complete field-to-frame conversion, extract effective frames and eliminate duplicate frames, Ensure the recovery of video from field to frame, ensure the non-repetition of frames, and lay the foundation for reducing the source of video jump.

[0023] 2) The video stream ...

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Abstract

The invention provides a speed conversion processing module of a high definition digital video frame. The module provided by the invention comprises a film mode recognition pretreatment module, a movement estimation and compensation module, an adoptive interpolation algorithm frame speed conversion module and an objective quality evaluation module. The invention also provides a speed conversion method of the video frame. The method comprises the following steps: recognizing the type of a video source and determining the video format of the video source, interweaving or reversely intersecting a video stream, completing restoration from a video field to the frame and eliminating the dressing defect of an image; estimating a movement vector between the frames by using a movement estimation and compensation algorithm, recognizing whether a moving object is shielded or not and determining the position of the moving object; according to the movement estimation information, adaptively carrying out weighted average interpolation between the unshielded frames of the moving object, or adaptively carrying out protective interpolation on different areas based on the shielded image situation of the moving object; and establishing an objective evaluation model of video processing quality, and correcting adjustable parameters of frame speed conversion by using quality grade provided by the objective evaluation model, thereby optimizing the processing quality of the video.

Description

technical field [0001] The invention relates to digital video processing technology, in particular to an optimized digital video frame rate conversion processing module and method applied in high-definition televisions and set-top boxes. Background technique [0002] The rapid development of high-end flat panel displays makes the refresh rate higher and higher, which has risen from the traditional 60Hz to 120Hz or even 200Hz. Video post-processing, that is, video quality enhancement processing, is required after the video stream is decoded. Among them, the frame rate up-conversion algorithm is an important processing module in the video post-processing algorithm pipeline. This module performs frame-to-frame interpolation on the video stream, thereby completing the up-conversion of the frame rate, so that the frame rate of the video stream matches the refresh rate of the display. The following problems still exist in the existing video frame rate processing methods to be so...

Claims

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Application Information

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IPC IPC(8): H04N5/253H04N5/44
Inventor 杨胜齐
Owner BEIJING WISDOM ELVES TECH
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