Why is the images quality slower?

[hlyf-xs]

I used the mclahe to enhance my images which size were[128, 128, 80], the super parameter are (n_bins=32, clip_limit=0.01, adaptive_hist_range=Fasle, use_gpu=True). But I found the qualities of images were degraded. Are the super parameters set wrong?

[hlyf-xs]

After using the mclahe(), I calculated the metrics about the SNR(Signal To Noise Ratio), the CR(Contrast Ratio), and the HET(Heterogeneity), found that the SNR down, the CR down, and the HET up. The quality of images was degraded. I was confused about how to solve the problems.