Struct StructuringElement 

pub struct StructuringElement {
    pub width: usize,
    pub height: usize,
    pub anchor_x: usize,
    pub anchor_y: usize,
    pub mask: Vec<bool>,
}

A binary structuring element (neighbourhood mask) with an anchor.

The mask is a row-major [height × width] boolean grid; true cells are members of the neighbourhood. The anchor (anchor_y, anchor_x) marks the cell that aligns with the output pixel — typically the geometric centre.

Fields

width: usize

Element width (number of columns).

height: usize

Element height (number of rows).

anchor_x: usize

Anchor column (origin of the element), < width.

anchor_y: usize

Anchor row (origin of the element), < height.

mask: Vec<bool>

Row-major [height × width] membership mask (true = member).

Implementations

impl StructuringElement

pub fn new(width: usize, height: usize, mask: Vec<bool>) -> VisionResult<Self>

Build a structuring element from an explicit [height × width] mask, anchored at its geometric centre (height / 2, width / 2).

Errors

Returns VisionError::EmptyInput if the element is degenerate (zero dimension or no member cells) and VisionError::DimensionMismatch if mask.len() != width * height.

pub fn rect(width: usize, height: usize) -> VisionResult<Self>

Build a solid (all-member) width × height rectangular element anchored at its centre.

Errors

Returns VisionError::EmptyInput if either dimension is zero.

pub fn square(size: usize) -> VisionResult<Self>

Build a solid size × size square element.

Errors

Returns VisionError::EmptyInput if size == 0.

pub fn cross(radius: usize) -> Self

Build a plus-shaped (4-connected) cross element of the given radius.

The element is (2·radius + 1)² in size with the central row and column set. A radius of 0 yields the 1 × 1 identity element.

Trait Implementations

impl Clone for StructuringElement

fn clone(&self) -> StructuringElement

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StructuringElement

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

Formats the value using the given formatter.

impl Eq for StructuringElement

impl PartialEq for StructuringElement

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl StructuralPartialEq for StructuringElement