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Method for enhancing color image

A color image, original color image technology, applied in the field of image processing, can solve the problem of not considering the enhancement of brightness component, poor effect, etc.

Inactive Publication Date: 2010-06-16
SUN YAT SEN UNIV
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  • Summary
  • Abstract
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Problems solved by technology

Therefore, most of the existing color image enhancement methods based on Hue, Saturation, and Brightness (HSV) only enhance the brightness component, without considering that after the brightness component is enhanced, the image saturation will affect people's perception of color.
Even if some methods take into account the visual characteristics, they only do a simple stretching of the saturation, and the enhanced effect is not good

Method used

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  • Method for enhancing color image
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  • Method for enhancing color image

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Embodiment Construction

[0037] 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 creative efforts fall within the protection scope of the present invention.

[0038] The embodiment of the present invention provides a method for color image enhancement, which converts the original image from the red, green, blue (RGB) space to the hue, saturation, brightness (HVS) space, and uses local The mean value enhancement method adjusts the saturation component (S) according to the change of the brightness component and utilizes the relationship between brightness and saturation, thereby enhancing the clarity of the image and making...

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Abstract

The invention discloses a method for enhancing a color image, comprising the following steps of: (1) converting an original color image from a red, green and blue (RGB) space into a hue, saturation and variability (HSV) space; (2) maintaining the hue H component unchanged, locally enhancing the variability V by adopting a mean value and standard deviation way and changing the saturation S according to the relationship of the saturation S and the variability V; and (3) converting the processed image from the HSV space into the RGB space. The invention can enhance the definition of the image and enable the enhanced image to be more according with the human visual characteristics.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a color image enhancement method. Background technique [0002] When image enhancement technology is applied to consumer electronic products such as TVs and digital cameras, it is particularly important to maintain the brightness of the original image in the output image. Most of the original image enhancement techniques are aimed at grayscale images, and cannot be extended to color image enhancement directly, because color images also include color information. Color image enhancement not only needs to consider how to enhance the image, but also needs to consider how to keep the color tone unchanged. [0003] Common color image enhancement algorithms include: one is to convert the color image through the color space, and transform the image from the closely related red, green, blue (RGB) space to the basically irrelevant color space such as hue, saturation, The bright...

Claims

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Application Information

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IPC IPC(8): H04N9/68H04N9/77
Inventor 罗笑南蒋艳会李峰
Owner SUN YAT SEN UNIV
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