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Enhanced Image Distortion Rate Detection Method

A technology of image enhancement and detection method, which is applied in image analysis, image enhancement, image data processing, etc., can solve the problem of not finding the method of image distortion rate detection, and achieve the effect of accurate distortion rate

Active Publication Date: 2019-07-23
CHONGQING MEDICAL UNIVERSITY
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] Therefore, the image distortion rate is an important means to evaluate the advantages and disadvantages of image enhancement methods, but so far, in various literature reports, there is no method for detecting image distortion rate

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Embodiment Construction

[0048] The present invention will be further described below in conjunction with the embodiments and accompanying drawings.

[0049] Such as figure 1 As shown, an enhanced image distortion rate detection method includes the following steps:

[0050] Step 1, performing chromaticity analysis on the original image and the enhanced image, obtaining the chromaticity spectrum of the three color components in the original image and the chromaticity spectrum of the three color components in the enhanced image;

[0051] Step 2, respectively calculating the information distortion rate DRIE, component distortion rate DRCT and color distortion rate DRH of the enhanced image;

[0052] The information distortion rate DRIE of the enhanced image is calculated as follows:

[0053] DRIE=(IE E -IE O ) / IE O

[0054] IE O is the information entropy of the original image, IE E To enhance the information entropy of the image.

[0055] The information entropy IE of the original image O and ...

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Abstract

The invention discloses an enhanced image distortion rate detection method. Through the analyzing of the chroma spectrums of an original image and an enhanced image, the information entropies, the consisting components and the relevant coefficients of the original image and the enhanced image are obtained so as to work out the information distortion rate, the consisting component distortion rate and the color distortion rate of the enhanced image, and to finally work out the general distortion rate of the enhanced image. The enhanced image distortion rate detection method of the invention can be used to evaluate the merits and disadvantages of a currently available image enhancing method.

Description

technical field [0001] The invention relates to the field of digital image processing, in particular to a method for detecting distortion rate of enhanced images. Background technique [0002] Image enhancement is a widely used digital image processing technology. At present, there are many methods for image enhancement, including Retinex-based methods (MSRCR method), HE-based methods (such as HP3DHE) and Zadeh-X transformation. No matter which method is used for image enhancement, it will cause changes in the chromaticity, contrast, and information content of the enhanced image compared with the original image, resulting in image distortion. The lower the distortion rate of the enhanced image, the better it can reflect the inherent characteristics of the image; while the higher the image distortion rate, it is possible to introduce information or components that do not exist in the original image, which will have serious consequences, such as increased The composition of ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00
CPCG06T5/00G06T7/0002G06T2207/10024G06T2207/20072G06T2207/30168
Inventor 贺向前贾媛媛王体春王颖谢正祥
Owner CHONGQING MEDICAL UNIVERSITY