Image enhancement method and computing equipment

A computing device and image enhancement technology, which is applied in the field of image processing, can solve problems such as manual adjustment, and achieve the effect of enhancing detail information, enhancing color and brightness information

Inactive Publication Date: 2018-09-04
XIAMEN MEITUZHIJIA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In short, the traditional image enhancement algorithm is a relatively general algorithm. The advantage is that it has strong versatility. The disadvantage is that sometimes it is necessary to manually adjust the corresponding parameters to get a better enhancement effect.

Method used

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  • Image enhancement method and computing equipment
  • Image enhancement method and computing equipment
  • Image enhancement method and computing equipment

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Experimental program
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Embodiment approach

[0061] According to an embodiment of the present invention, taking the DCT transformation of 8*8 size as an example, there are 64 transformation kernels in total, and the size of each transformation kernel is 8*8, and the transformation kernel of its two-dimensional DCT transformation is calculated according to the following formula kernel(i,j):

[0062]

[0063] Among them, i∈0~7, j∈0~7, k∈0~7, l∈0~7, patchsize=8, and

[0064]

[0065] Such as Figure 3A with Figure 3B , respectively show schematic diagrams of images (after normalization) of two DCT transformation kernels kernel(1,4) and kernel(2,2) according to an embodiment of the present invention.

[0066] In the second step, the transformation kernel is encoded to generate a new transformation kernel. The transformation kernels are reordered according to the zigzag scanning order to obtain a new transformation kernel.

[0067] According to one implementation, the new transformation kernel new_kernel(u) is gene...

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Abstract

The invention discloses an image enhancement method. The method is suitable for execution in computing equipment, and includes the steps of: decomposing an input image according to predetermined decomposition kernels of DCT to obtain low-frequency response and high-frequency response of the image; inputting the low-frequency response of the image into a first enhancement network to obtain enhancedlow-frequency response; inputting the high-frequency response of the image into a second enhancement network to obtain enhanced high-frequency response; and reconstructing the image according to theenhanced low-frequency response and the enhanced high-frequency response to obtain an enhanced image. The invention also discloses the computing equipment used for executing the above method.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to an image enhancement method and computing equipment. Background technique [0002] Image enhancement technology is an image processing technology that purposely emphasizes the overall or local characteristics of an image. Through image enhancement, the original unclear image becomes clear or some interesting features are emphasized, the difference between different object features in the image is enlarged, and uninteresting features are suppressed to improve image quality, enrich information, and enhance image Interpretation and identification effects, to meet the needs of some special analysis. [0003] Traditional image enhancement algorithms can be divided into two categories, frequency domain enhancement methods and spatial domain enhancement methods. The former regards the image as a two-dimensional signal and performs signal enhancement based on two-dimensional F...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06N3/04
CPCG06T2207/20052G06T2207/20084G06T2207/20192G06N3/045G06T5/77
Inventor 周星光刘挺郑阿敏张伟程安
Owner XIAMEN MEITUZHIJIA TECH
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