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An image processing method and device

An image processing and image technology, applied in image data processing, image analysis, image enhancement, etc., can solve problems such as block effect and insufficient smoothness of the image

Active Publication Date: 2020-08-28
THUNDERSOFT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the commonly used local enhancement processing technology is prone to block effects at the junction of sub-images, that is, there are obvious boundary phenomena, resulting in the processed image not being smooth enough.

Method used

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  • An image processing method and device
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  • An image processing method and device

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Embodiment Construction

[0064] The technical solution of the embodiment of the present invention is applicable to an application scenario in which an image is enhanced and the dynamic range of the image is improved. By adopting the technical scheme of the embodiment of the present invention, the dynamic range of the image can be improved by region, the image can be enhanced by region, and the image smoothness can be ensured.

[0065] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0066] The embodiment of the present invention discloses ...

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Abstract

The present invention proposes an image processing method, which includes: dividing an image to be processed into a plurality of sub-images, and dividing the image to be processed into an edge area image, a four-corner area image and a center area image; and calculating the image enhancement of each sub-image respectively. Mapping table; according to the image enhancement mapping table of each sub-image, the image enhancement mapping table of the edge area image, four corner area image and central area image is calculated; according to the image enhancement mapping table of the edge area image, four corner area image and central area image respectively , perform image enhancement processing on edge area images, four corner area images and central area images. Using the above method to enhance the image can improve the dynamic range of the image while ensuring the smoothness of the image.

Description

technical field [0001] The invention relates to the technical field of digital image processing, in particular to an image processing method and device. Background technique [0002] The dynamic range of a digital image represents the distribution range of gray levels of image pixels. Generally speaking, the wider the dynamic range of an image, the higher the contrast of the image, and the better the visual effect of the image. In technologies such as game rendering, display device color enhancement, photography, etc., details in low dynamic range images are less noticeable, and it is difficult for observers to obtain bright and easy-to-see images. Therefore, improving the dynamic range of digital images has become a commonly used technical means to enhance the visual effects of digital images. [0003] The histogram equalization method can non-linearly stretch the gray scale of the image through the cumulative function, redistribute the pixel values ​​of the image, and mak...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/11G06T5/40G06T5/00
CPCG06T5/40G06T7/11G06T5/94G06T5/70
Inventor 田光亚朱勇
Owner THUNDERSOFT