Struct PreprocessSpec 

#[non_exhaustive]
pub struct PreprocessSpec {
    pub normalization: Normalization,
    pub fit: FitMode,
    pub placement: LetterboxPlacement,
    pub pad: [f32; 3],
    pub pad_space: PadSpace,
    pub interpolation: Interpolation,
    pub size: Option<(usize, usize)>,
}

A model’s input preprocessing as plain values: what the image crate needs to build a convert, produced by the decoder from model metadata.

The default is the documented edgefirst.json default: unsigned normalization, a centred letterbox padded with pixel 114, bilinear.

use edgefirst_tensor::{FitMode, LetterboxPlacement, PreprocessSpec};

let spec = PreprocessSpec::default();
assert_eq!(spec.fit, FitMode::Letterbox);
assert_eq!(spec.placement, LetterboxPlacement::Center);
assert_eq!(spec.pad, [114.0; 3]);

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

normalization: Normalization

Pixel normalization.

fit: FitMode

Stretch or letterbox.

placement: LetterboxPlacement

Letterbox placement; ignored by a stretch.

pad: [f32; 3]

Letterbox pad per RGB channel, in the space pad_space names.

pad_space: PadSpace

The space pad is expressed in.

interpolation: Interpolation

Resampling filter of the reference pipeline.

size: Option<(usize, usize)>

Model input (width, height), when known.

Implementations

impl PreprocessSpec

pub fn new() -> PreprocessSpec

The default spec; set the public fields to change it.

Trait Implementations

impl Clone for PreprocessSpec

fn clone(&self) -> PreprocessSpec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl ContentRegionSource for PreprocessSpec

fn content_region( &self, src_w: usize, src_h: usize, dst_w: usize, dst_h: usize, ) -> Result<ContentRegion, Error>

The content region for an src_w×src_h source converted into a dst_w×dst_h destination.

impl Copy for PreprocessSpec

impl Debug for PreprocessSpec

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

Formats the value using the given formatter.

impl Default for PreprocessSpec

fn default() -> PreprocessSpec

Returns the “default value” for a type.

impl PartialEq for PreprocessSpec

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PreprocessSpec