Module colour_spaces

Image manipulation effects in HSL, HSLuv, LCh and HSV.

Functions

darken_hsl

Darken the image by a specified amount in the HSL colour space.

darken_hsluv

Darken the image by a specified amount in the HSLuv colour space.

darken_hsv

Darken the image’s colours by a specified amount in the HSV colour space.

darken_lch

Darken the image by a specified amount in the LCh colour space.

desaturate_hsl

Desaturate the image by a specified amount in the HSL colour space.

desaturate_hsluv

Desaturate the image by a specified amount in the HSLuv colour space.

desaturate_hsv

Desaturate the image by a specified amount in the HSV colour space.

desaturate_lch

Desaturate the image by a specified amount in the LCh colour space.

gamma_correction

Applies gamma correction to an image.

hsl

Image manipulation effects in the HSL colour space.

hsluv

Image manipulation effects in the HSLuv colour space

hsv

Image manipulation in the HSV colour space.

hue_rotate_hsl

Shift hue by a specified number of degrees in the HSL colour space.

hue_rotate_hsluv

Shift hue by a specified number of degrees in the HSLuv colour space.

hue_rotate_hsv

Shift hue by a specified number of degrees in the HSV colour space.

hue_rotate_lch

Shift hue by a specified number of degrees in the LCh colour space.

lch

Image manipulation effects in the LCh colour space

lighten_hsl

Lighten an image by a specified amount in the HSL colour space.

lighten_hsluv

Lighten an image by a specified amount in the HSLuv colour space.

lighten_hsv

Lighten an image by a specified amount in the HSV colour space.

lighten_lch

Lighten an image by a specified amount in the LCh colour space.

mix_with_colour

Mix image with a single color, supporting passing opacity. The algorithm comes from Jimp. See function mix and function colorFn at following link: https://github.com/oliver-moran/jimp/blob/29679faa597228ff2f20d34c5758e4d2257065a3/packages/plugin-color/src/index.js Specifically, result_value = (mix_color_value - origin_value) * opacity + origin_value = mix_color_value * opacity + (1 - opacity) * origin_value for each of RGB channel.

saturate_hsl

Increase the image’s saturation by converting each pixel’s colour to the HSL colour space and increasing the colour’s saturation.

saturate_hsluv

Increase the image’s saturation in the HSLuv colour space.

saturate_hsv

Increase the image’s saturation in the HSV colour space.

saturate_lch

Increase the image’s saturation in the LCh colour space.