At the minimum value all contrast is lost and all of the image is turned dull gray. At the maximum value the image becomes a thresholded image for maximum contrast. 0.0 means no change. The alpha channel of the source image is retained and copied 1:1.
SYNTAX:
newImg& = ModifyContrast& (shan&, change#, minX%, minY%, maxX%, maxY%, mask&)
INPUTS:
change# (DOUBLE)
- The contrast adjustment, must be between -1.0 and 1.0 (clipped).
shan&, mask& (LONGs)
minX%, minY%, maxX%, maxY% (INTEGERs)
- See page Common Info.
RESULT:
newImg& (LONG)
- See page Common Info.