/**
* Scales the range of <code>image</code> to an arbitrary min/max in a Region of Interest.
*
* @param image GrayImage to scale.
* @param roi Region of Interest of <code>image</code>
* @return <code>image</code>.
*/
protected Image apply(GrayImage image, ROI roi) {
int int_max = (int) float_max;
int int_min = (int) float_min;
float min = image.min(roi);
float max = image.max(roi);
float r = 0;
float range = max - min;
if (range == 0) range = 1; // to avoid divide by zero problems
float value = 0;
for (int y = roi.uy(); y <= roi.ly(); y++) {
for (int x = roi.ux(); x <= roi.lx(); x++) {
r = (float) image.get(x, y);
value = (((r - min) / (range) * (int_max - int_min)) + int_min);
image.set(x, y, (short) value);
}
}
return image;
}
