Struct ComparisonResult 

pub struct ComparisonResult {
    pub max_abs_diff: u32,
    pub mean_abs_diff: f64,
    pub psnr_db: f64,
    pub rms_error: f64,
    pub worst_index: usize,
    pub element_count: usize,
    pub differing_elements: usize,
    pub diff_histogram: [u64; 256],
}

Detailed result of comparing two buffers element-by-element.

Fields

max_abs_diff: u32

Maximum absolute difference between any two corresponding elements.

mean_abs_diff: f64

Mean absolute difference.

psnr_db: f64

Peak Signal-to-Noise Ratio (dB). f64::INFINITY if buffers are identical.

rms_error: f64

Root Mean Square error.

worst_index: usize

Index of the element with the largest absolute difference.

element_count: usize

Total number of elements compared.

differing_elements: usize

Number of elements that differ by at least 1.

diff_histogram: [u64; 256]

Histogram of absolute differences (bin i = count of elements with diff == i). Limited to the first 256 bins.

Implementations

impl ComparisonResult

pub fn compare_u8(a: &[u8], b: &[u8]) -> Self

Compare two u8 buffers element-by-element.

If the buffers have different lengths, the comparison is performed over the shorter length.

pub fn compare_f32(a: &[f32], b: &[f32]) -> Self

Compare two f32 buffers element-by-element.

Values are assumed to be in the range [0.0, 1.0].

pub fn passes(&self, metric: &ToleranceMetric) -> bool

Check whether this result passes a given tolerance metric.

pub fn diff_percentage(&self) -> f64

Percentage of elements that differ.

pub fn is_exact_match(&self) -> bool

Whether the two buffers are exactly identical.

Trait Implementations

impl Clone for ComparisonResult

fn clone(&self) -> ComparisonResult

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ComparisonResult

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

Formats the value using the given formatter.