Abstract
A good brightness preserving contrast enhancement method has several applications especially in consumer electronics. A novel contrast enhancement method based on histogram equalization has been proposed in this paper. The method divides the histogram of an image into four sub histograms. Then, clipping is applied on each sub histogram. The clipping threshold of each sub histogram is taken as the difference between the median and standard deviation of the occupied intensities which gives a smoother cumulative distribution function and leads to better equalization of the sub histograms resulting in a good enhancement. Each sub histogram is assigned a new range and histogram equalization is done independently.
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Sarada, C.S., Wilscy, M. (2013). A Brightness Preserving Contrast Enhancement Method Based on Clipped Histogram Equalization. In: S, M., Kumar, S. (eds) Proceedings of the Fourth International Conference on Signal and Image Processing 2012 (ICSIP 2012). Lecture Notes in Electrical Engineering, vol 222. Springer, India. https://doi.org/10.1007/978-81-322-1000-9_5
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DOI: https://doi.org/10.1007/978-81-322-1000-9_5
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