ModuleJuicyPixels-3.3.8Haskell2010

Codec.Picture.ColorQuant

This module provide some color quantisation algorithm in order to help in the creation of paletted images. The most important function is palettize which will make everything to create a nice color indexed image with its palette.

2 types
3 values

PackageJuicyPixels-3.3.8
Exports5
LanguageHaskell2010
LicenceBSD-3-Clause
SourceColorQuant.hs

valuepalettize :: PaletteOptions -> Image PixelRGB8 -> (Image Pixel8, Palette)

Reduces an image to a color palette according to PaletteOptions and returns the indices image along with its Palette.

valuepalettizeWithAlpha

Converts RGBA image to the array of GifFame's to use in encodeComplexGifImage

valuedefaultPaletteOptions :: PaletteOptions

Default palette option, which aim at the best quality and maximum possible colors (256)

datadata PaletteCreationMethod

Define which palette creation method is used.

Constructors

MedianMeanCut
MedianMeanCut method, provide the best results (visualy) at the cost of increased calculations.
Uniform
Very fast algorithm (one pass), doesn't provide good looking results.

datadata PaletteOptions

To specify how the palette will be created.

Constructors

PaletteOptions
- paletteCreationMethod :: PaletteCreationMethod
  Algorithm used to find the palette
- enableImageDithering :: Bool
  Do we want to apply the dithering to the image. Enabling it often reduce compression ratio but enhance the perceived quality of the final image.
- paletteColorCount :: Int
  Maximum number of color we want in the palette