A Novel Template-Based Image Super-resolution Enhancement Method

A new type of template and super-resolution technology, which is 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 improve adaptability , the effect of increasing precision

Inactive Publication Date: 2019-09-17
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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  • A Novel Template-Based Image Super-resolution Enhancement Method
  • A Novel Template-Based Image Super-resolution Enhancement Method
  • A Novel Template-Based Image Super-resolution Enhancement Method

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Embodiment Construction

[0036] The technical scheme of the present invention will be further described below in conjunction with the 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. Obtain the standard database and some additional image libraries as the original image set, and use it as a data set for testing and verifying the effectiveness of the present invention, including obtaining the images of the standard libraries such as Set5, Set14, B100, and image libraries such as USC-SIPI; Choose any image and do 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: Pre-set an outline template set through a certain image set, including 57 kinds of outline feature templates. ...

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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 novel template, in particular to an end-to-end single image super-resolution reconstruction method based on the superposition of a novel template and a point spread function. Background technique [0002] The adjustment of the image resolution is a frequently required operation in the application. When faced with various types of images, some classic image processing techniques often fail to achieve better results, especially when there are image texture details or edge stability requirements are high, because the change in resolution is often accompanied by loss of high-frequency information and The amount of information is reduced, so the super-resolution results of the image are often poor and cannot achieve satisfactory goals. Therefore, designing a good image super-resolution method and improving the effect of image super-resolution is a subject worthy of study. [0003] With the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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