Applies the effect on a RawBitmap image with parameters that have been set on the class instance, taking additionally the value for the contrast.
source as RawBitmap,
value as Single) as RawBitmap
- The source image as RawBitmap
- The contrast value. The value can be from -1.0 to 1.0
- The result as RawBitmap or nil if there was error