Struct Greyscale 

pub struct Greyscale;

Greyscale (sharp’s greyscale): every colour channel becomes the pixel’s BT.601 luma. The channel count is kept, as in sharp, whose greyscale output is three identical channels; alpha is untouched.

Trait Implementations

impl Clone for Greyscale

fn clone(&self) -> Greyscale

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Greyscale

impl Debug for Greyscale

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for Greyscale

fn default() -> Greyscale

Returns the “default value” for a type.

impl Eq for Greyscale

impl Op for Greyscale

fn name(&self) -> &'static str

A short, stable name for this op, used in diagnostics.

fn rescaled(&self) -> Option<Arc<dyn Op>>

A copy of this op fit for a graph rebuilt at a reduced input resolution, or None if this op must not be.

fn output_descriptor( &self, inputs: &[ImageDescriptor], ) -> Result<ImageDescriptor, PixelsError>

Compute the output shape from the input shapes.

fn input_regions( &self, output: Region, _inputs: &[ImageDescriptor], ) -> Result<Vec<Region>, PixelsError>

The input regions needed to produce output.

fn compute( &self, inputs: &[Tile<'_>], output: &mut TileMut<'_>, ) -> Result<(), PixelsError>

Fill output from inputs — the kernel entry point.

fn arity(&self) -> usize

The number of inputs this op consumes.

fn access_pattern(&self) -> AccessPattern

How this op reads its inputs; drives tile negotiation (ADR-0003).

impl PartialEq for Greyscale

fn eq(&self, other: &Greyscale) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Greyscale