«Forval» er ein felles eigenskap for fleire fargekommandoar. Du finn nærare forklaring i Del 8.1.1, «Felles eigenskapar for fargar».
Standard deviation of gaussian neighborhood average for computing local contrast. If 0 is used a global threshold is used instead of one based on local contrast.
This sets a rough target of levels of accuracy for antialiasing, or set to 1 to disable antialiasing.
Thresholding level consists of two values. Change the lower threshold towards 0 to minimize shadows or towards 1.0 to minimize highlights. The high threshold decides the maximum values to include, above this it gets set to 0.
Dette er felles eigenskapar forklarte i Del 8.1.1, «Felles eigenskapar for fargar».