Sequence image self-adaptive regular super resolution reconstruction method

A technology for super-resolution reconstruction and sequence images, which is applied in image enhancement, image data processing, instruments, etc. to suppress smoothing effects and improve effects.

Inactive Publication Date: 2011-11-02
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the smoothing effect problem existing in the existing super-resolution regularized reconstruction method, and to provide a sequence image adaptive regularized super-resolution reconstruction method, which can complete super-resolution image reconstruction. At the same time, the smoothing effect is effectively suppressed, thereby improving the effect of image reconstruction

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[0033] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0034] 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.

[0035] 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,

[0036] the y k =H k z+n k , 1≤k≤p, (1)

[0037] In the formula, y k Denotes the kth low-resolution observation image, z denotes the high-resolution image for degradation, H k is the degradation matrix, n k is the added noise vector, and p is the number of images conta...

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Abstract

The invention discloses a sequence image self-adaptive regular super resolution reconstruction method and is directed to the field of image enhancement technology. According to the invention, based on the present regularization reconstruction method, improvements are carried out to an image reconstruction regularization object equation, an edge maintenance operator based on morphology is introduced to have an effect on a regular item, different regular constraints are adopted towards different geometrical structures, the constraint reconstruction of the image is enhanced at the edge of the image, that is, a small regularization parameter is employed and a large regularization parameter is adopted in the smooth area of the image to enhance the regularization. Besides, each time the acquirement of the edge maintenance operator is self-adaptive based on a latest iteration result with the ongoing of the iteration. Compared to the prior art, according to the invention, a smoothing effect in the reconstruction process can be effectively inhibited and the quality of the reconstructed high resolution image is improved.

Description

technical field [0001] The invention relates to an image reconstruction method, in particular to a sequence image adaptive regular super-resolution reconstruction method, which belongs to the technical field of digital image enhancement. Background technique [0002] With the rapid development of digital image technology, people have higher and higher requirements for high-resolution digital images. The higher the resolution of the image, the clearer the details of the image and the more information it can provide. In recent years, super-resolution reconstruction technology has become a research hotspot in the field of image processing. This technology uses the relative motion information between multiple low-resolution images to extract useful information in each low-resolution image and fuse them into One or more high-resolution images with simultaneous removal of noise and blurring effects from optical components. Since the super-resolution reconstruction technology use...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T5/50
Inventor 杨欣唐庭阁费树岷郭爱群周大可
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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