Method for reconstructing super resolution of sequence image POCS

A technology for super-resolution reconstruction and sequence images, which is used in image enhancement, image data processing, instrumentation, etc.

Active Publication Date: 2012-11-28
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Method for reconstructing super resolution of sequence image POCS
  • Method for reconstructing super resolution of sequence image POCS
  • Method for reconstructing super resolution of sequence image POCS

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[0034] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0035] In order to facilitate the public's understanding of the technical solution of the present invention, before explaining the method of the present invention, a brief introduction to the existing regularized reconstruction principle is given.

[0036] A high-resolution image (HR) is degraded to obtain multiple low-resolution (LR) images. This is the image degradation process, which is the image observation commonly used in super-resolution reconstruction from a sequence of low-resolution images. Model. The mathematical expression of the image observation model is as follows,

[0037] the y k =H k Z+n k , 1≤k≤p, (1)

[0038] In the formula, y k Denotes the kth low-resolution observation image, z denotes the high-resolution image for degradation, H k is the point spread function, that is, the degeneracy matrix, n k is the added noise vec...

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Abstract

The invention relates to a method for reconstructing the super resolution of a sequence image POCS. The method mainly comprises the following steps of: establishing an image enhancement observation model ykz=Hkz+nk, wherein k is more than or equal to 1 and less than or equal to p, degenerating a high-resolution image by the established image enhancement observation model to obtain multiple low-resolution observation images, establishing an image POCS reconstructing target equation for each low-resolution observation image, and carrying out optimization solving on the image POCS reconstructing target equation by using an iterative algorithm to obtain the currently estimated simulation high-resolution reconstructing image. By adopting the method for reconstructing the super resolution of a sequence image POCS, the Gibbs effect of a reconstructing image can be effectively restricted, and the quality and visual effect of the reconstructing high-resolution image are improved.

Description

technical field [0001] The invention relates to an image restoration and reconstruction method, in particular to a sequence image POCS super-resolution reconstruction method, which belongs to the technical field of digital image enhancement. Background technique [0002] The acquisition of digital images is affected by factors such as hardware equipment, external environment, and imaging technology, which makes the quality of the obtained images deteriorate and the resolution is not high. The most direct and effective way to improve image quality and image resolution is to improve the imaging system. Due to the dual constraints of cost and technology, it is becoming more and more difficult to improve the imaging system. Therefore, super-resolution technology emerged as the times require. For a set of low-resolution images with little change in the scene, which contain similar information but have different details, super-resolution technology (Super-Resolution, SR) Micro-di...

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Application Information

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IPC IPC(8): G06T5/50
Inventor 杨欣唐庭阁周大可费树岷徐胜利
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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