Enum Backend 

pub enum Backend {
    OpenCV {
        threshold: f32,
    },
    RuntimeDetectedSimd {
        threshold: f32,
        step_x: usize,
        step_y: usize,
    },
    Scalar {
        threshold: f32,
        step_x: usize,
        step_y: usize,
    },
}

The backend/algorithm to use.

There is an optional opencv backend, that uses the opencv-rust crate which depends on the OpenCV C++ library. This requires enabling the opencv feature in find-subimage.

There is another simdeez optional dependency, which uses the simdeez crate for a rust SIMD implementation. This is enabled by default.

The only implementation which cannot be disabled at present is the scalar one.

Variants

OpenCV

OpenCV SQDIFF_NORMED MatchTemplate

Note that the threshold values for this backend use a different scale than the others.

Fields

threshold: f32

RuntimeDetectedSimd

This should detect CPU features at runtime and use the best possible rust SIMD implementation of SQDIFF_NORMED (square difference).

step_x and y let you customize it to skip every Nth x or y coordinate in case you need less accurate results, potentially giving large speedups.

Fields

threshold: f32

step_x: usize

step_y: usize

Scalar

Scalar SQDIFF_NORMED (square difference) implementation.

Slowest, should work anywhere and be reliable.

Smallest in terms of generated code size.

step_x and y let you customize it to skip every Nth x or y coordinate in case you need less accurate results, potentially giving large speedups.

Fields

threshold: f32

step_x: usize

step_y: usize

Trait Implementations

impl Clone for Backend

fn clone(&self) -> Backend

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Backend