A local image contrast enhancement method to improve the perceptibility of image information
A technology of local contrast and image information, applied in image enhancement, image data processing, instruments, etc., can solve problems such as inability to fidelity information, image distortion, and unfavorable information clearly visible to the human eye.
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[0055] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0056] Firstly, it introduces the measurement method of human eye perceptibility for gray scale relationship, then the implementation of human eye perceptual fidelity constraints of image local information, and finally the contrast enhancement algorithm.
[0057] When the grayscale values between pixels are equal, the human eye can always easily perceive the equal relationship; when the grayscale values between pixels are not equal, the small grayscale difference will make it difficult for the human eye to perceive the greater than or less than relationship. The human eye perceptibility of the greater than and less than relationship of the gray value between pixels is determined by the human perceptibility of the gray value difference between pixels. The easier it is for the human eye to perceive the change in the gray value between pixels...
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