Tile

Qualified name: crop_row_detector.orthomosaic_tiler.Tile

class Tile(orthomosaic, Upper_left_corner, position, width, height, overlap=0.0, number=0)

Bases: object

Handle all information of a tile with read and write.

Parameters:

• orthomosaic (pathlib.Path) – The orthomosaic from where the tile is taken.

• Upper_left_corner (tuple[int, int]) – The pixel coordinate from the orthomosaic of the upper left corner of the tile in (columns, rows).

• position (tuple[int, int]) – Tile position in orthomosaic in number of tile in (columns, rows).

• width (float) – Tile width.

• height (float) – Tile height.

• overlap (float) – Overlap as a fraction of width and height.

• number (int) – Used to identify tiles.

Methods

get_window_pixels	Get pixels from tile without overlap.
get_window_pixels_boundary	Get the tiles boundary without the overlap.
read_tile	Read the tiles image data from the orthomosaic.
save_tile	Save the image of the tile to a tiff file.
set_tile_data_from_orthomosaic	Read data about the tile from the orthomosaic.

Attributes

tile_number	The tile number.
window	Window specifying the region of the orthomosaic for this tile.
window_with_overlap	Window specifying the region of the orthomosaic for this tile with overlap of neighboring tiles.

get_window_pixels(image)

Get pixels from tile without overlap.

Parameters:

image (ndarray)

Return type:

ndarray

get_window_pixels_boundary()

Get the tiles boundary without the overlap.

Returns:

• start_column (int)

• stop_column (int)

• start_row (int)

• stop_row (int)

Return type:

tuple[int, int, int, int]

read_tile(with_overlap=True)

Read the tiles image data from the orthomosaic. If with_overlap is true a window with a border around the tile is used.

Parameters:

with_overlap (bool)

Return type:

tuple[ndarray, ndarray]

save_tile(image, mask, output_tile_location)

Save the image of the tile to a tiff file. Filename is the tile number.

Parameters:

• image (ndarray)

• mask (ndarray | None)

• output_tile_location (Path)

Return type:

None

set_tile_data_from_orthomosaic()

Read data about the tile from the orthomosaic.

Return type:

tuple[Window, Window]

tile_number

The tile number. Useful for identification.

window: Window

Window specifying the region of the orthomosaic for this tile.

window_with_overlap: Window

Window specifying the region of the orthomosaic for this tile with overlap of neighboring tiles.