Struct HqParams 

pub struct HqParams {
    pub auto_strength: bool,
    pub noise_floor: bool,
    pub sigma_override: Option<f32>,
    pub temporal_confidence: bool,
    pub thsad_scale: f32,
    pub sigma_scale: f32,
}

Parameters for the quality-focused nlmeans-hq variant. The noise level drives both the effective strength and the distance floor, so weighting adapts to how noisy the source actually is.

Fields

auto_strength: bool

Interpret strength as a multiplier on the noise level. The effective FFmpeg-style strength becomes strength × sigma_eff × 255. Default: true.

noise_floor: bool

Subtract the expected noise floor from patch distances before weighting, so matches are not penalised for the noise they carry. Default: true.

sigma_override: Option<f32>

Fixed noise standard deviation in [0, 1] units, overriding automatic per-frame estimation. None (the default) measures noise from each pushed frame and smooths it over time. Some applies one fixed value to every frame instead. The CLI takes this in 8-bit units via --hq-sigma and divides by 255.

temporal_confidence: bool

Weight temporal neighbours by how well they block-match the centre frame, so occlusion or content change collapses their contribution instead of blurring it in. Only takes effect when temporal_radius > 0. Default: true.

thsad_scale: f32

Multiplier on the per-pixel mismatch threshold that decides how much excess SAD a block tolerates before its confidence starts dropping. Higher values tolerate larger mismatches. Default: 1.0.

sigma_scale: f32

Multiplier applied to each channel’s automatically measured sigma before it folds into the running estimate. 1.0 keeps the measurement as-is. Has no effect when sigma_override is set, since the estimation path never runs in that case. Default: 1.0. The CLI takes this as --hq-sigma-scale.

Implementations

impl HqParams

pub fn with_sigma(sigma: f32) -> Self

HQ defaults with a fixed noise level in [0, 1] units, skipping automatic estimation.

Trait Implementations

impl Clone for HqParams

fn clone(&self) -> HqParams

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for HqParams

impl Debug for HqParams

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

Formats the value using the given formatter.

impl Default for HqParams

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for HqParams

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for HqParams