What Is Histogram Equalization?

Histogram equalization is a method for adjusting contrast using image histograms in the field of image processing.

This method is usually used to increase the globality of many images
in
Contrast is the ratio of black and white on the screen, which is the gradation from black to white. The larger the ratio, the more gradations from black to white, and the richer the color expression. The effect of contrast on visual effects is very critical. Generally speaking, the larger the contrast, the clearer and more vivid the image, and the more vivid and vivid the colors; while the smaller the contrast, the whole picture will be gray.
High contrast for images
  • Histogram matching
  • Adapt to histogram equalization
  • Normalization (image processing)

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