FsspecJsonWSIReader¶

class FsspecJsonWSIReader(input_img, mpp=None, power=None, cache_size=268435456)[source]¶

Reader for fsspec zarr JSON generated by: tiatoolbox/utils/tiff_to_fsspec.py.

The fsspec zarr JSON file represents a SVS or TIFF file that be accessed using byte range HTTP API.

All the information on the chunk locations in the SVS or TIFF file is outlined as byte-ranges in the JSON. This ensures that the reader requests only chunks that are needed to display requested tiles, rather than the entire SVS or TIFF file.

Initialize FsspecJsonWSIReader.

Methods

read_bounds

See TIFFWSIReaderDelegate.read_bounds docs for details.

read_rect

See TIFFWSIReaderDelegate.read_rect docs for details.

Attributes

Parameters:

  • input_img (str | Path | np.ndarray)

  • mpp (tuple[Number, Number] | None)

  • power (Number | None)

  • cache_size (int)

read_bounds(bounds, resolution=0, units='level', interpolation='optimize', pad_mode='constant', pad_constant_values=0, coord_space='baseline', **kwargs)[source]¶

See TIFFWSIReaderDelegate.read_bounds docs for details.

Parameters:

  • self (FsspecJsonWSIReader)

  • bounds (IntBounds)

  • resolution (Resolution)

  • units (Units)

  • interpolation (str)

  • pad_mode (str)

  • pad_constant_values (int | IntPair)

  • coord_space (str)

  • kwargs (dict)

Return type:

np.ndarray

read_rect(location, size, resolution=0, units='level', interpolation='optimize', pad_mode='constant', pad_constant_values=0, coord_space='baseline', **kwargs)[source]¶

See TIFFWSIReaderDelegate.read_rect docs for details.

Parameters:

  • self (FsspecJsonWSIReader)

  • location (IntPair)

  • size (IntPair)

  • resolution (Resolution)

  • units (Units)

  • interpolation (str)

  • pad_mode (str)

  • pad_constant_values (int | IntPair)

  • coord_space (str)

  • kwargs (dict)

Return type:

np.ndarray