A video super-resolution method and device

A super-resolution and video technology, applied in the field of video super-resolution reconstruction, can solve problems such as reducing visual effects and image aliasing, and achieve the effect of improving visual effects

Inactive Publication Date: 2016-03-30
PEKING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a video super-resolution method and device to solve the problem that the existing super-resolution method causes jagged images and reduces the visual effect

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  • A video super-resolution method and device
  • A video super-resolution method and device
  • A video super-resolution method and device

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Embodiment Construction

[0014] The specific implementation manners of a video super-resolution method and device provided in the embodiments of the present invention will be described below with reference to the drawings in the description.

[0015] A video super-resolution method provided by an embodiment of the present invention, such as figure 1 As shown, it specifically includes the following steps:

[0016] S101: Down-sampling an input video sequence.

[0017] Preferably, in the above step S101, the input video sequence may be {...f 0 n-1 ,f 0 n ,f 0 n+1 ,...}, downsample them, the downsampling scale can be 1.25 -k , the video sequence obtained after downsampling is {...f -k n-1 ,f -k n ,f -k n+1 ,...}, k is a positive integer, such as k=1,2,3....

[0018] S102: For each first video frame in the input video sequence, with each pixel selected as the center, determine the pixel and a set number of pixels around it as a source image block.

[0019] In this step S102, when determining...

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Abstract

The embodiment of the invention provides a method and device of the super-resolution of a video. In the method, first, sampling is conducted on an input video sequence, then source image blocks which are determined by every first video frame in the input video sequence, first video frames where the source image blocks belong to, adjacent video frames of the first video frames where the source image blocks belong to, the corresponding video frames in the video sequence after the first video frames are sampled and pixel value entries and structure entries among all image blocks to be compared are used for working out the similar distance between the source image blocks and the image blocks to be compared, wherein the image blocks to be compared are determined in the adjacent vide frames of the corresponding video frames, the image blocks to be compared, which have the smallest similar distance, are the similar image blocks of the source image blocks, at last, all the similar image blocks corresponding to all the source image blocks in every first frame video and the corresponding similar distances are calculated to obtain a target video sequence containing second video frames. The method and device solve the problems that sawtooth happens to an existing method of the super-resolution and the visual effect of the video is poor.

Description

technical field [0001] The invention relates to the field of video super-resolution reconstruction, in particular to a video super-resolution method and device. Background technique [0002] Super-resolution technology refers to overcoming the limitations of imaging equipment or technology and generating higher-resolution images or videos based on low-resolution images or videos. With the maturity of image and video processing technology, users have higher and higher requirements for video viewing experience. Users not only need more realistic visual effects, but also gradually increase the demand for detailed information of the picture. For example, in the field of video surveillance, High-resolution images are more conducive to identifying objects of interest. [0003] At present, the industry has done extensive research on super-resolution methods, and proposed various reconstruction methods, such as methods based on interpolation, methods based on learning, methods base...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/14G06T5/00
Inventor 白蔚李马丁刘家瑛郭宗明
Owner PEKING UNIV
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