Title :
A Simplified Derivation of Frei´s Histogram Hyperbolization for Image Enhancement
Author_Institution :
Department of Electrical and Computer Engineering, University of New Hampshire, Durham, NH 03824.
Abstract :
Frei has recently introduced a new technique (histogram hyperbolization) for image enhancement by the manipulation of the picture brightness levels. An alternative derivation of Frei´s result, both simpler and more general, is presented.
Keywords :
Brightness; Cameras; Coordinate measuring machines; Histograms; Humans; Image enhancement; Layout; Printers; Random variables; TV; Gray-scale compression; histogram hyperbolization; image contrast; image enhancement; image entropy; picture brightness levels;
Journal_Title :
Pattern Analysis and Machine Intelligence, IEEE Transactions on
DOI :
10.1109/TPAMI.1979.4766952
