Histogram equalization is a common technique for adjusting the pixel intensities of images. In histogram equalization, a monotonic transformation is applied to the intensities of the pixels in an image. The transformations are chosen so that the resulting images have a standard or specified histogram. This is sometimes performed to enhance the contrast or reduce the effect of lighting variation on the appearance of a scene.
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(2009). Histogram Equalization. In: Li, S.Z., Jain, A. (eds) Encyclopedia of Biometrics. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-73003-5_629
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DOI: https://doi.org/10.1007/978-0-387-73003-5_629
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