HISTOGRAM EXPANSION-A TECHNIQUE OF HISTOGRAM EQULIZATION

Jasdeep Kaur, Nancy, Nishu, Ramneet Kaur

Abstract: In this paper I have described histogram expansion. Histogram expansion is a technique of histogram equalization. In this I have described three different techniques of expansion namely dynamic range expansion, linear contrast expansion and symmetric range expansion. Each of these has their specific uses and advantages. For colored images linear contrast expansion is used. These all methods help in easy study of histograms and helps in image enhancement.

Keywords: Histogram expansion, Dynamic range expansion, Linear contrast expansion, Symmetric range expansion

DOI: https://doi.org/10.15623/ijret.2013.0205004