Struct ScoreThreshold 

pub struct ScoreThreshold { /* private fields */ }

Corner score threshold of the f32 detector.

Scores are minimum eigenvalues of the mean 3x3 structure tensor of Scharr gradients normalized by 32, in (input unit / pixel)^2: (°C / px)^2 for a thermal image in °C. They scale with the square of the image contrast and do not depend on a constant offset.

A local maximum is kept when its score is positive and at least max(absolute, relative * strongest), where strongest is the largest local-maximum score in the whole image. The reference is global for grid detection as well, not per cell. The relative part is disabled (zero) unless set with with_relative.

Implementations

impl ScoreThreshold

pub fn absolute(min_score: f32) -> Self

Keeps local maxima scoring at least min_score, in (input unit / pixel)^2.

Panics

Panics if min_score is negative, NaN or infinite.

pub fn with_relative(self, quality_level: f32) -> Self

Additionally requires at least quality_level times the strongest local maximum’s score, as the 8-bit detector’s quality_level does.

Panics

Panics unless 0 <= quality_level <= 1.

pub fn absolute_part(&self) -> f32

The absolute part, in (input unit / pixel)^2.

pub fn relative_part(&self) -> f32

The relative part; zero when disabled.

Trait Implementations

impl Clone for ScoreThreshold

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ScoreThreshold

impl Debug for ScoreThreshold

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

Formats the value using the given formatter.

impl PartialEq for ScoreThreshold

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ScoreThreshold