Enum image_canvas::color::Differencing

#[non_exhaustive]
pub enum Differencing {
    Bt407MPal,
    Bt407MPalPrecise,
    Bt601,
    Bt601Quantized,
    Bt601FullSwing,
    Bt709,
    Bt709Quantized,
    Bt709FullSwing,
    YDbDr,
    Bt2020,
    Bt2100,
    YCoCg,
}

The differencing scheme used in a Yuv construction.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Bt407MPal

Rec BT.470 M/PAL differencing scheme for E_U and E_V, the naming origin for ‘YUV’. FIXME: add YIQ proper, to add BT.470 M/NTSC?

Note this same differencing scheme is used with different color primaries and whitepoints. With those shared with BT601_625 and D65 in more modern systems and a different one under illuminant C.

Bt407MPalPrecise

The BT.470 M/PAL has a typo and, based on its parameters, we can derive a more accurate version than as what was published..

Bt601

Rec BT.601 luminance differencing.

Bt601Quantized

Rec BT.601 luminance differencing, quantized with headroom. This is intended for analog use, not for digital images.

Bt601FullSwing

Rec BT.601 luminance differencing, quantized without headroom.

Please tell the crate author where it’s used but this makes it easy to quantize to 8-bit unsigned integers.

Bt709

Rec BT.709 luminance differencing.

Bt709Quantized

Analog form

Bt709FullSwing

Rec BT.709 luminance differencing, quantized without headroom. Not technically an ITU BT recommendation, but introduced in h.264.

YDbDr

Factors from analog SECAM standard.

Bt2020

Rec BT.2020 luminance differencing.

Bt2100

Rec BT.2100 luminance differencing. Same coefficients as the BT2020 scheme.

YCoCg

Differencing scheme from YCoCb/ITU-T H.273.

Trait Implementations

impl Clone for Differencing

fn clone(&self) -> Differencing

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Differencing

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

Formats the value using the given formatter.

impl PartialEq<Differencing> for Differencing

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Copy for Differencing

impl Eq for Differencing

impl StructuralEq for Differencing

impl StructuralPartialEq for Differencing