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Segment

source module isofit.utils.segment

Functions

  • segment_chunk — Segment a small chunk of the image

  • segment — Segment an image using SLIC on a PCA.

source segment_chunk(lstart, lend, in_file, nodata_value, npca, segsize, logfile=None, loglevel='INFO')

Segment a small chunk of the image

Parameters

  • lstart — starting position in image file

  • lend — stopping position in image file

  • in_file — file path to segment

  • nodata_value — value to ignore

  • npca — number of pca components to use

  • segsize — mean segmentation size

  • logfile — logging file name

  • loglevel — logging level

Returns

  • lstart — starting position in image file lend: stopping position in image file labels: labeled image chunk

source segment(spectra: tuple, nodata_value: float, npca: int, segsize: int, nchunk: int, n_cores: int = 1, ray_address: str = None, ray_redis_password: str = None, ray_temp_dir=None, ray_ip_head=None, logfile=None, loglevel='INFO')

Segment an image using SLIC on a PCA.

Parameters

  • spectra : tuple — tuple of filepaths of image to segment and (optionally) output label file

  • nodata_value : float — data to ignore in radiance image

  • npca : int — number of pca components to use

  • segsize : int — mean segmentation size

  • nchunk : int — size of each image chunk

  • n_cores : int — number of cores to use

  • ray_address : str — ray address to connect to (for multinode implementation)

  • ray_redis_password : str — ray password to use (for multinode implementation)

  • ray_temp_dir — ray temp directory to reference

  • ray_ip_head — ray ip head to reference (for multinode use)

  • logfile — logging file to output to

  • loglevel — logging level to use