Trait image_hasher::Image

pub trait Image: GenericImageView + 'static {
    type Buf: Image + DiffImage;

    // Required methods
    fn to_grayscale(&self) -> Cow<'_, GrayImage>;
    fn blur(&self, sigma: f32) -> Self::Buf;
    fn foreach_pixel8<F>(&self, foreach: F)
       where F: FnMut(u32, u32, &[u8]);
}

Shorthand trait bound for APIs in this crate.

Currently only implemented for the types provided by image with 8-bit channels.

Required Associated Types

type Buf: Image + DiffImage

The equivalent ImageBuffer type for this container.

Required Methods

fn to_grayscale(&self) -> Cow<'_, GrayImage>

Grayscale the image, reducing to 8 bit depth and dropping the alpha channel.

fn blur(&self, sigma: f32) -> Self::Buf

Blur the image with the given Gaussian sigma.

fn foreach_pixel8<F>(&self, foreach: F)where F: FnMut(u32, u32, &[u8]),

Iterate over the image, passing each pixel’s coordinates and values in u8 to the closure.

The iteration order is unspecified but each pixel must be visited exactly once.

If the pixel’s channels are wider than 8 bits then the values should be scaled to [0, 255], not truncated.

Note

If the pixel data length is 2 or 4, the last index is assumed to be the alpha channel. A pixel data length outside of [1, 4] will cause a panic.

Implementations on Foreign Types

impl Image for DynamicImage

type Buf = ImageBuffer<Rgba<u8>, Vec<u8, Global>>

fn to_grayscale(&self) -> Cow<'_, GrayImage>

fn blur(&self, sigma: f32) -> Self::Buf

fn foreach_pixel8<F>(&self, foreach: F)where F: FnMut(u32, u32, &[u8]),

impl<P, C> Image for ImageBuffer<P, C>where P: Pixel<Subpixel = u8> + 'static, C: Deref<Target = [u8]> + 'static,

type Buf = ImageBuffer<P, Vec<u8, Global>>

fn to_grayscale(&self) -> Cow<'_, GrayImage>

fn blur(&self, sigma: f32) -> Self::Buf

fn foreach_pixel8<F>(&self, foreach: F)where F: FnMut(u32, u32, &[u8]),

Implementors