The percentage must be in the range [-100, 100] where 0 has no effect. A value of -100 produces a solid grey image, and a value of 100 produces an over-contrasted image.
Usage #
Create the filter:
{{ $filter := images.Contrast -20 }}
The percentage must be in the range [-100, 100] where 0 has no effect. A value of -100 produces a solid grey image, and a value of 100 produces an over-contrasted image.
Create the filter:
{{ $filter := images.Contrast -20 }}