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A gradient-based image sharpening processing method, system and shooting terminal

An image sharpening and processing method technology, applied in the field of image processing, can solve the problem of inconspicuous weak edge, and achieve the effect of weak edge enhancement, good sharpening effect and moderate enhancement range

Active Publication Date: 2019-05-03
XIAMEN MEITUZHIJIA TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The traditional sharpening process mainly uses fuzzy algorithms to superimpose to better preserve the edge information. Although these algorithms have a better effect on preserving the obvious edges in the image, the corresponding weak edges are not obvious, especially on the face. Regional aspects

Method used

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  • A gradient-based image sharpening processing method, system and shooting terminal
  • A gradient-based image sharpening processing method, system and shooting terminal
  • A gradient-based image sharpening processing method, system and shooting terminal

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Embodiment Construction

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0046] Such as figure 1 Shown, a kind of gradient-based image sharpening processing method of the present invention, it comprises the following steps:

[0047] a1. Perform color gradient calcula...

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Abstract

The invention discloses a gradient-based image sharpening processing method and system and a shooting terminal. The method comprises the following steps: carrying out color gradient calculation on an image to be processed and obtaining first direction color gradient and second direction color gradient of a red / green / blue channel of each pixel point of the image; carrying out sharpening processing adjustment on an initial color curve of the image to be processed to obtain a curve mapping table; then, carrying out curve mapping on the first direction color gradient and the second direction color gradient according to the curve mapping table to obtain first direction mapping gradient and second direction mapping gradient; and finally, carrying out Poisson equation calculation on the image to be processed according to the first direction mapping gradient and the second direction mapping gradient to obtain a sharpening-effect image. Therefore, weak edges of the image can be reinforced better, while the reinforcing amplitude of strong edges is moderate; and the image processing effect is better.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a gradient-based image sharpening processing method, a system for applying the method, and a shooting terminal. Background technique [0002] After a digital image is taken, it is often sharpened or blurred. In the frequency domain, a digital image contains low-frequency components and high-frequency components. Image blurring filters out the high-frequency components in the image, so sharpening can be seen as strengthening the high-frequency components in the image and weakening the low-frequency components in the image. [0003] The traditional sharpening process mainly uses fuzzy algorithms to superimpose to better preserve the edge information. Although these algorithms have a better effect on preserving the obvious edges in the image, the corresponding weak edges are not obvious, especially on the face. Regional aspects. Contents of the invention [0004] In ord...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00
Inventor 张伟傅松林胡瑞鑫王喆
Owner XIAMEN MEITUZHIJIA TECH
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