Struct GridHomographyMesh 

pub struct GridHomographyMesh {
    pub min_i: i32,
    pub min_j: i32,
    pub cells_x: usize,
    pub cells_y: usize,
    pub px_per_cell: f32,
    pub valid_cells: usize,
    pub rect_width: usize,
    pub rect_height: usize,
    /* private fields */
}

Per-cell homography mesh over a 2D grid.

Maps between a rectified coordinate system (uniform grid spacing) and the original image coordinates, using one homography per grid cell.

Fields

min_i: i32

Minimum grid index (corner space).

min_j: i32

Minimum grid index (corner space).

cells_x: usize

Number of cells (squares) horizontally.

cells_y: usize

Number of cells (squares) vertically.

px_per_cell: f32

Rectified pixels per grid cell.

valid_cells: usize

Number of cells that have all 4 corners and a valid homography.

rect_width: usize

Width of the rectified image in pixels.

rect_height: usize

Height of the rectified image in pixels.

Implementations

impl GridHomographyMesh

pub fn from_corners( corners: &HashMap<GridIndex, Point2<f32>>, px_per_cell: f32, ) -> Result<Self, GridMeshError>

Build per-cell homographies from a grid corner map.

• corners: map from grid index to image position.
• px_per_cell: rectified pixels per grid cell.

pub fn rect_to_img(&self, p_rect: Point2<f32>) -> Option<Point2<f32>>

Map a point in global rectified pixel coordinates to image coordinates.

Returns None if the point lies outside the mesh or the cell is invalid.

pub fn cell_rect_to_img( &self, ci: usize, cj: usize, p_cell: Point2<f32>, ) -> Option<Point2<f32>>

Map a point in cell-local rectified coordinates to image coordinates.

• ci, cj: cell indices in 0..cells_x × 0..cells_y
• p_cell: point in [0..px_per_cell]²

pub fn cell_corners_img(&self, ci: usize, cj: usize) -> Option<[Point2<f32>; 4]>

Get the 4 image-space corners of a cell (TL, TR, BR, BL order).

Trait Implementations

impl Clone for GridHomographyMesh

fn clone(&self) -> GridHomographyMesh

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GridHomographyMesh

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

Formats the value using the given formatter.