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Super-resolution processing method for videos

A technology of super-resolution and processing methods, which is applied in image data processing, instruments, calculations, etc., can solve problems such as poor definition of high-resolution images and poor super-resolution processing effects, so as to achieve sufficient information and ensure image quality. Sharpness, the effect of improving the processing effect

Active Publication Date: 2014-03-12
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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Problems solved by technology

However, the high-resolution images obtained by existing processing methods still have poor clarity and poor super-resolution processing effects.

Method used

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  • Super-resolution processing method for videos
  • Super-resolution processing method for videos
  • Super-resolution processing method for videos

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Embodiment Construction

[0011] The present invention will be described in further detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0012] The concept of the present invention is: by studying the correlation between self-similar image blocks and improving the video definition, on the basis of the up-sampling algorithm of super-resolution processing, the sub-pixel information in the similar image block set is used to realize super-resolution rate, so as to ensure the clarity of the reconstructed image while increasing the video resolution. During super-resolution processing, the current frame image is first divided into multiple image blocks, and for each divided image block, similar matching image blocks are searched in the current frame space domain and the time domain frame before and after, and all Similar matching image blocks are grouped together to form a similar block set. Then, the image blocks in the similar block set are up-sampled usi...

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Abstract

The invention discloses a super-resolution processing method for videos. The super-resolution processing method comprises the following steps: carrying out the following processing operations on all frame images in received videos to be processed, namely (1) dividing the current frame image into a plurality of image blocks; (2) respectively carrying out the following processing on all image blocks in the current frame image, so as to obtain super-resolution image blocks of all the image blocks, namely 1) detecting similar blocks of the current block; 2) carrying out up-sampling processing on a plurality of similar blocks of the current image block, so as to obtain up-sampling image blocks of all the similar blocks; and 3) fusing the up-sampling image blocks of all the similar blocks into a super-resolution image block; and (3) integrating the super-resolution image blocks of all the image blocks into an image according to the positions of all the image blocks in the current frame image so as to obtain a super-resolution processing image of the current frame image. The super-resolution processing method disclosed by the invention has the advantages that by utilization of similar image blocks in a space domain and / or similar image blocks in a time domain, the processing effect can be improved.

Description

【Technical field】 [0001] The invention relates to the field of computer video processing, in particular to a video super-resolution processing method based on self-similar block matching. 【Background technique】 [0002] Super-resolution processing technology is a technology to improve the resolution of video or images. The popular understanding is to improve the resolution of original images by means of hardware or software. Due to certain factors in the process of image and video acquisition, collection, transmission and storage, etc., the quality level may be reduced or too low. With the development of computer multimedia technology, people have higher and higher requirements for the definition of digital images. Therefore, it is often necessary to improve the resolution of video or images through super-resolution processing, and at the same time, it is hoped that the processed video will have higher definition. In existing video super-resolution processing methods, high-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/50
CPCG06T3/4053
Inventor 张磊肖煜东索津莉张永兵戴琼海
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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