
HISTOGRAM MODIFICATION 255
Histogram equalization usually performs best on images with detail hidden in
dark regions. Good-quality originals are often degraded by histogram equalization.
As an example, Figure 10.2-3 shows the result of histogram equalization on the jet
image
Frei (7) has suggested the histogram hyperbolization procedure listed in Table
10.2-1 and described in Figure 10.2-4. With this method, the input image histogram
is modified by a transfer function ...