Title :
Color image enhancement through 3-D histogram equalization
Author :
Trahanias, P.E. ; Venetsanopoulos, A.N.
Author_Institution :
Dept. of Electr. Eng., Toronto Univ., Ont., Canada
fDate :
30 Aug-3 Sep 1992
Abstract :
The method of histogram equalization for grey-level image enhancement is extended to color images in the paper. A method of direct 3-D histogram equalization is proposed which results in a uniform histogram of the RGB values. Due to the correlation between the bands, the principle on which grey-level (1-D) histogram equalization is based is not valid in the case of color images (3-D). This problem is alleviated by employing a histogram specification method where a uniform histogram is specified
Keywords :
image processing; probability; random processes; 1-D; 3-D histogram equalization; RGB values; color images; grey-level image enhancement; histogram specification method; image processing; probability; random processes; Brightness; Color; Frequency; Histograms; Image enhancement; Multidimensional systems; Probability density function; Probability distribution; Random variables; Shape;
Conference_Titel :
Pattern Recognition, 1992. Vol.III. Conference C: Image, Speech and Signal Analysis, Proceedings., 11th IAPR International Conference on
Conference_Location :
The Hague
Print_ISBN :
0-8186-2920-7
DOI :
10.1109/ICPR.1992.202045
