Image super-resolution enhance method based on novel template

A new type of template and super-resolution technology, applied in image enhancement, graphics and image conversion, image data processing, etc., can solve the problem that image super-resolution does not have enough excellent effects, achieve high degree of freedom and adaptability, and avoid dependence , improve the effect of edge quality

Inactive Publication Date: 2017-11-07
WUHAN UNIV
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Problems solved by technology

Most of the existing methods based on reconstruction or enhancement are not good enough for image super-resolution.

Method used

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  • Image super-resolution enhance method based on novel template
  • Image super-resolution enhance method based on novel template
  • Image super-resolution enhance method based on novel template

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Embodiment Construction

[0036] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0037] The overall flow chart of the present invention is as figure 1 As shown, it specifically includes the following steps (including testing):

[0038] Step 1, obtaining standard databases and some additional image libraries as original image sets, and as data sets for testing and verifying the effectiveness of the present invention, including obtaining images of standard libraries such as Set5, Set14, B100, and image libraries such as USC-SIPI; Select any image for 0.5 times downsampling to obtain a low-resolution image, which is the actual input image.

[0039] Step 2: Perform contour template interpolation on the input image and enlarge it by 2 times to obtain a high-resolution reference image.

[0040] Step 2.1, through a certain image set, pre-set a set of contour templates, including 57 kinds of contour feature temp...

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Abstract

The present invention relates to the novel template image super-resolution technology. The method comprises: obtaining an original image set, performing 0.5-times downsampling of each image in the image set, and obtaining low-resolution images; performing outline template interpolation amplification for two times, and obtaining high-resolution reference images; performing novel template enhancement of the high-resolution reference images and the low-resolution images; performing matching of SIFT feature points, and calculating a motion matrix between the high-resolution reference images and the low-resolution images so as to obtain corresponding points in the low-resolution images of the points on the high-resolution reference images; and calculating the residual errors of the points on the high-resolution reference images and the corresponding in the low-resolution images to combine the residual images, performing overlapping of the residual images and the high-resolution reference images, and obtaining final images. The novel template can effectively enhance image high-frequency information and effective maintain low-frequency information in the images so as to have wide application in the image enhancement field.

Description

technical field [0001] The invention relates to an image super-resolution technology based on a new template, in particular to an end-to-end single image super-resolution reconstruction method based on a new template and point spread function superposition. Background technique [0002] Image resolution adjustment is a frequently required operation in applications. When faced with various types of images, some classic image processing techniques often cannot achieve good results, especially when there are image texture details or high edge stability requirements, because the change of resolution is often accompanied by high-frequency information loss and The amount of information is reduced, so the super-resolution results of images are often poor and unsatisfactory. Therefore, designing a good image super-resolution method to improve the effect of image super-resolution is a topic worthy of research. [0003] With the development of computer technology and machine vision ...

Claims

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Application Information

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IPC IPC(8): G06T3/40G06T5/00
CPCG06T3/4053G06T2207/20192G06T2207/20224G06T5/00
Inventor 雷俊锋张赏月肖进胜罗丽邹文涛周永强
Owner WUHAN UNIV
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