sispo.compression package¶

Submodules¶

Module for compression and decompression investigations.

This module is the main contribution of my master thesis.

exception sispo.compression.compression.CompressionError¶: Generic error class for compression errors.

class sispo.compression.compression.Compressor(res_dir, img_dir, img_ext='exr', algo=None, settings=None)¶

Main class to interface compression module.

comp_decomp(img=None, img_id=None)¶

Default function that applies compression and decompression.

Parameters:	img – Image to be compressed and decompressed.

comp_decomp_series(max_threads=7)¶: Compresses and decompresses multiple images using :py:func:comp_decomp

compress(img=None, img_id=None)¶

Compresses images using predefined algorithm or file format.

Parameters:	img – Image to be compressed.
Returns:	A compressed image.

decompress(img)¶

Decompresses images using predefined algorithm or file format.

Returns:	Decompressed image.

get_frame_ids()¶: Extract list of frame ids from file names of Inst(rument) images.

load_image(img_id)¶

Load a single image into memory.

Parameters:	img_id (str) – id of the image to load

select_algo(algo, settings)¶

Select compression and decompression algorithm or file format.

Parameters:	algo – string to describe algorithm or file format to use for image compression. settings – dictionary to describe settings for the compression algorithm. Default is {“level”: 9}, i.e. highest compression.