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Color enhancement method and device

A technology of color enhancement and brightness enhancement, applied in the field of image processing, can solve the problem of the image not being bright green, and achieve the effect of enhancing the color and improving the image effect.

Pending Publication Date: 2020-11-06
ZHEJIANG UNIVIEW TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the green enhancement algorithms use the method of only adjusting the saturation, and the image processed by this method has the problem of color cast or dark green (that is, the green is not bright)

Method used

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  • Color enhancement method and device
  • Color enhancement method and device

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Experimental program
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Embodiment approach

[0059] The hue influencing factor is not less than 1. Optionally, the way to obtain the hue influencing factor may be, but not limited to, performing a table lookup in a preset lookup table including different hue values ​​and corresponding hue influencing factors, or calculating through a predetermined calculation formula get. In one manner of this embodiment, the hue influencing factor is calculated according to the hue value of the first pixel and a first preset calculation formula, wherein the first preset calculation formula is a Gaussian value related to the hue value function formula. As an implementation manner, the first preset calculation formula is:

[0060]

[0061] Among them, f(hue) represents the hue influence factor, i represents the serial number of the target enhanced color, n represents the total number of colors that can be enhanced, and hue represents the hue value, Indicates the hue value of the target enhanced color, and σ indicates the smoothness...

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Abstract

The invention provides a color enhancement method and device, and relates to the technical field of image processing. The method comprises the following steps: converting an obtained first target image from an RGB color space to an HSV color space to obtain a second target image; dividing all pixel points of the second target image into first pixel points and second pixel points according to the determined target enhanced color; performing brightness enhancement processing on the first pixel point according to a hue influence factor corresponding to the hue value of the first pixel point and the brightness value of the first pixel point; performing saturation enhancement processing on the first pixel point after brightness enhancement to obtain a processed second target image; and converting the processed second target image from the HSV color space to the RGB color space to obtain a third target image. Therefore, by enhancing the brightness and saturation of the pixel points corresponding to the target enhanced color, the problem that the target enhanced color is not bright due to the scene itself can be effectively solved.

Description

technical field [0001] The present application relates to the technical field of image processing, and in particular, to a color enhancement method and device. Background technique [0002] With the continuous development of digital camera technology, people have higher and higher requirements for image effects, and hope that the captured images will be more vivid. At present, a green enhancement algorithm is generally used to enhance the green color of an image. Most of the green enhancement algorithms adopt the method of only adjusting the saturation, and there is a problem of color cast or dark green (that is, the green is not bright) in the image processed by this method. Contents of the invention [0003] In order to overcome the above-mentioned deficiencies in the prior art, the purpose of the embodiments of the present application is to provide a color enhancement method and device, which can combine the influence of hue and brightness on the target enhanced color ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
CPCG06T2207/10024G06T5/90
Inventor 李卫星杨颖青
Owner ZHEJIANG UNIVIEW TECH CO LTD