applies the reversed level operation to just the channels specified.
It compresses the full range of color values, so that they lie between
the given black and white points. Gamma is applied before the values
are mapped.
It can be used for example de-contrast a greyscale image to the exact
levels specified. Or by using specific levels for each channel of an
image you can convert a gray-scale image to any linear color gradient,
according to those levels.
applies the reversed level operation to just the channels specified. It compresses the full range of color values, so that they lie between the given black and white points. Gamma is applied before the values are mapped.
It can be used for example de-contrast a greyscale image to the exact levels specified. Or by using specific levels for each channel of an image you can convert a gray-scale image to any linear color gradient, according to those levels.