Struct opencv::line_descriptor::LSDParam

#[repr(C)]
pub struct LSDParam {
    pub scale: f64,
    pub sigma_scale: f64,
    pub quant: f64,
    pub ang_th: f64,
    pub log_eps: f64,
    pub density_th: f64,
    pub n_bins: i32,
}

Lines extraction methodology

The lines extraction methodology described in the following is mainly based on EDL . The extraction starts with a Gaussian pyramid generated from an original image, downsampled N-1 times, blurred N times, to obtain N layers (one for each octave), with layer 0 corresponding to input image. Then, from each layer (octave) in the pyramid, lines are extracted using LSD algorithm.

Differently from EDLine lines extractor used in original article, LSD furnishes information only about lines extremes; thus, additional information regarding slope and equation of line are computed via analytic methods. The number of pixels is obtained using LineIterator. Extracted lines are returned in the form of KeyLine objects, but since extraction is based on a method different from the one used in BinaryDescriptor class, data associated to a line’s extremes in original image and in octave it was extracted from, coincide. KeyLine’s field class_id is used as an index to indicate the order of extraction of a line inside a single octave.

Fields

scale: f64

sigma_scale: f64

quant: f64

ang_th: f64

log_eps: f64

density_th: f64

n_bins: i32

Implementations

impl LSDParam

pub fn default() -> Result<LSDParam>

Trait Implementations

impl Clone for LSDParam

fn clone(&self) -> LSDParam

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for LSDParam

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

Formats the value using the given formatter.

impl PartialEq<LSDParam> for LSDParam

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for LSDParam

impl StructuralPartialEq for LSDParam