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“…where E(x, y) and E s (x, y) are the spatial proximity factor and the brightness similarity factor, respectively, and σ 2 1 and σ 2 K represent the Gaussian kernel variance that controls the similarity factor. Histogram equalization maps the gray level of pixels, stretches the gray value of the entire image range to an average shadow, and improves the contrast and saturation of the image.…”
Section: Medical Image Denoisingmentioning
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rupbmjkragerfmgwileyiopcupepmcmbcthiemesagefrontiersapsiucrarxivemeralduhksmucshluniversity-of-gavle
“…where E(x, y) and E s (x, y) are the spatial proximity factor and the brightness similarity factor, respectively, and σ 2 1 and σ 2 K represent the Gaussian kernel variance that controls the similarity factor. Histogram equalization maps the gray level of pixels, stretches the gray value of the entire image range to an average shadow, and improves the contrast and saturation of the image.…”
Section: Medical Image Denoisingmentioning
“…Statistics reveal that the incidence of CKD in China is as high as 10.8%, and CKD is often diagnosed in the late stage of kidney disease. Hemodialysis (HD) is the main treatment method for CKD patients [2]. Blood vessels are considered to be the lifeline of HD patients, and the dialysis rate of longterm dialysis patients for HD within 1 year is 60%, and the medical cost is 2 to 3 times that of the ordinary patients [3].…”
Section: Introductionmentioning