Function raster::filter::saturation

pub fn saturation(src: &mut Image, sat: f32) -> RasterResult<()>

Change saturation.

Pass a float value for sat. < 0.0 to decrease and > 0.0 to increase. Eg 0.5 for 50% increase in saturation.

Note: Saturation does not look good at the moment.

Examples

use raster::filter;

// Create image from file
let mut image = raster::open("tests/in/sample.png").unwrap();
filter::saturation(&mut image, 0.5).unwrap();
raster::save(&image, "tests/out/test_filter_saturation.jpg").unwrap();

Before

After