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. 2021 May 14;68:102750. doi: 10.1016/j.bspc.2021.102750

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Fig. 2 — (a) The average histogram of train images, (b) CDF of image before transformation (blue), CDF of the average histogram (black) and CDF of the image after transformation (red), (c) original image with black background, (d) the output image after transformation.