Trait retroimg::color::ColorDepth

pub trait ColorDepth {
    fn convert_image_with_loss(
        &self, 
        image: &RgbImage, 
        num_colors: Option<u32>
    ) -> (Vec<Color>, u64);

    fn convert_image(
        &self, 
        image: &RgbImage, 
        num_colors: Option<u32>
    ) -> Vec<Color> { ... }
    fn loss(&self, image: &RgbImage, num_colors: Option<u32>) -> u64 { ... }
}

Color depth image converter.

Required methods

fn convert_image_with_loss(
    &self,
    image: &RgbImage,
    num_colors: Option<u32>
) -> (Vec<Color>, u64)

Convert and retrieve the loss from converting an image.

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Provided methods

fn convert_image(&self, image: &RgbImage, num_colors: Option<u32>) -> Vec<Color>

Convert an RGB image to this color depth.

fn loss(&self, image: &RgbImage, num_colors: Option<u32>) -> u64

Estimate the loss obtained from converting an image. For the best results, greater discrepancies should result in higher loss values.

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Implementations on Foreign Types

impl<'a, T: ColorDepth> ColorDepth for &'a T

fn convert_image_with_loss(
    &self,
    image: &RgbImage,
    num_colors: Option<u32>
) -> (Vec<Color>, u64)

fn convert_image(&self, image: &RgbImage, num_colors: Option<u32>) -> Vec<Color>

Convert an RGB image to this color depth.

fn loss(&self, image: &RgbImage, num_colors: Option<u32>) -> u64

Estimate the loss obtained from converting an image. For the best results, greater discrepancies should result in higher loss values.

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Implementors

impl<B, F> ColorDepth for BackForePalette<B, F> where
    B: AsRef<[[u8; 3]]>,
    F: AsRef<[[u8; 3]]>, 

fn convert_image_with_loss(
    &self,
    image: &RgbImage,
    num_colors: Option<u32>
) -> (Vec<Color>, u64)

impl<C, P> ColorDepth for BestPalette<C> where
    C: Deref<Target = [P]>,
    P: ColorDepth, 

fn convert_image_with_loss(
    &self,
    image: &RgbImage,
    num_colors: Option<u32>
) -> (Vec<Color>, u64)

impl<M> ColorDepth for MappingColorDepth<M> where
    M: ColorMapper, 

fn convert_image_with_loss(
    &self,
    image: &RgbImage,
    num_colors: Option<u32>
) -> (Vec<Color>, u64)

impl<T> ColorDepth for FixedPalette<T> where
    T: AsRef<[[u8; 3]]>, 

fn convert_image_with_loss(
    &self,
    image: &RgbImage,
    num_colors: Option<u32>
) -> (Vec<Color>, u64)

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