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Frame rate improving method with UMH block matching motion estimation and optical flow field motion estimation combined

A technique for motion estimation and optical flow, which is used in image communication, digital video signal modification, electrical components, etc.

Inactive Publication Date: 2014-06-25
SHANDONG UNIV
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AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of halo effect and jagged edges in the frame rate improvement, this application provides a method for moving object detection to separate the foreground and background, and adopts a video frame rate improvement method based on the combination of block matching based motion estimation and optical flow field motion estimation , to improve frame rate boosted video quality

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  • Frame rate improving method with UMH block matching motion estimation and optical flow field motion estimation combined
  • Frame rate improving method with UMH block matching motion estimation and optical flow field motion estimation combined
  • Frame rate improving method with UMH block matching motion estimation and optical flow field motion estimation combined

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Embodiment Construction

[0019] The present invention is aimed at the movement of objects in the image, which is divided into foreground, background and edge regions, respectively adopts a size-variable block matching motion estimation method, and a method based on optical flow field motion estimation, and adopts overlapping block motion compensation after post-processing the motion vector The method constructs the inserted frame to reduce the effect of halo effect and edge aliasing, and achieve the goal of reconstructing high-quality and high-frame-rate video.

[0020] The present invention will be further described below in conjunction with specific embodiments (but not limited to this example) and accompanying drawings.

[0021] (1) Processing of original digital images:

[0022] (1) Read in the video;

[0023] (2) Set the counter t=1, sequentially save the i-th frame as the current frame, the t+2th frame as the next frame, and reserve the t+1th frame as the frame to be inserted;

[0024] (3) Use...

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Abstract

The invention provides a frame rate improving method which mainly comprises four steps that image segmentation is carried out, and the foreground, the background and the object edge are obtained; the foreground and the background are subjected to variable size block matching motion estimation, and the object edge is subjected to motion estimation based on an optical flow field; a motion vector is subjected to post processing, and a proper motion vector is obtained; and a method of overlapped block motion compensation and bilinear interpolation is used for motion compensation, and interpolation frames are synthesized. According to the frame rate improving method, the problems that the halo effect, the edge block sawtooth effect and the like happen in a traditional frame rate improving method can be solved, and the method is widely used in the field of frame rate improving.

Description

technical field [0001] The invention relates to a method for increasing frame rate video, which belongs to the field of video data processing. Background technique [0002] The frame rate improvement method of video is to improve the visual quality of low frame rate video and obtain high frame rate video by inserting predicted frames into the original frame rate video sequence. Due to the diverse applications of video frame rate boosting, frame rate boosting technology is becoming more and more important in the field of consumer electronics. HDTV and multimedia PC systems can play video with a higher frame rate than broadcast video streams, and video frame rate enhancement technology can be applied to increase the original video frame rate to improve the viewing effect of end users. [0003] At present, the most widely used method for video frame rate improvement is the motion compensation method based on motion estimation, and most of the frame rate improvement methods are...

Claims

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Application Information

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IPC IPC(8): H04N19/176H04N19/51H04N19/583
Inventor 孙国霞赵悦刘琚
Owner SHANDONG UNIV
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