Enum MaskOperation 

#[non_exhaustive]
pub enum MaskOperation {
    Blur {
        sigma: f32,
    },
    Threshold {
        value: u8,
    },
    Dilate {
        radius: f32,
    },
    Erode {
        radius: f32,
        border_mode: ErosionBorderMode,
    },
    FillHoles {
        threshold: u8,
    },
    KeepNLargestComponents {
        count: usize,
        threshold: u8,
    },
    DropComponentsBelowArea {
        min_area: f32,
        threshold: u8,
    },
}

A single transformation step applied to a grayscale mask image.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Blur

Apply Gaussian blur to the mask.

Fields

sigma: f32

Gaussian sigma. Must be greater than zero.

Threshold

Threshold the mask into a binary mask.

Fields

value: u8

Threshold value in the 0-255 range.

Dilate

Expand white mask regions.

Fields

radius: f32

Dilation radius in pixels. Must be non-negative and not NaN.

Erode

Shrink white mask regions.

Fields

radius: f32

Erosion radius in pixels. Must be non-negative and not NaN.

border_mode: ErosionBorderMode

How pixels outside the image bounds are treated.

FillHoles

Fill enclosed background regions.

Fields

threshold: u8

Threshold used to distinguish foreground from background.

KeepNLargestComponents

Keep the largest connected foreground components.

Fields

count: usize

Number of connected components to keep.

threshold: u8

Threshold used to distinguish foreground from background.

DropComponentsBelowArea

Drop connected foreground components below the requested pixel area.

Fields

min_area: f32

Minimum component area in pixels.

threshold: u8

Threshold used to distinguish foreground from background.

Implementations

impl MaskOperation

pub fn apply(&self, input: &GrayImage) -> GrayImage

Apply this operation to a grayscale mask image.

Panics

Panics if this is a blur operation whose sigma is not greater than zero, or a dilation or erosion operation whose radius is negative or NaN.

Trait Implementations

impl Clone for MaskOperation

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MaskOperation

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

Formats the value using the given formatter.

impl PartialEq for MaskOperation

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for MaskOperation