ZipArchive

class machinevisiontoolbox.Sources.ZipArchive(filename, filter=None, loop=False, **kwargs)

Iterate images from a zip archive

Parameters:

• filename (str) – path to zipfile

• filter (str) – a Unix shell-style wildcard that specified which files to include when iterating over the archive

• kwargs – options applied to image frames, see convert

The resulting object is an iterator over the image files within the zip archive. The iterator returns Image objects and the name of the file, within the archive, is given by its name attribute.

If the path is not absolute, the video file is first searched for relative to the current directory, and if not found, it is searched for in the images folder of the mvtb-data package, installed as a Toolbox dependency.

Example:

>>> from machinevisiontoolbox import ZipArchive
>>> images = ZipArchive('bridge-l.zip')
>>> len(images)
>>> for image in images:  # iterate over files
>>>   # process image

alternatively:

>>> image = images[i]  # load i'th file from the archive

References:

• Robotics, Vision & Control for Python, Section 11.1.2, P. Corke, Springer 2023.

Note:

filter is a Unix shell style wildcard expression, not a Python regexp, so expressions like *.png would select all PNG files in the archive for iteration.

Seealso:

open convert cv2.imread

__init__(filename, filter=None, loop=False, **kwargs)

Methods

__init__
ls	List all files within the archive to stdout.
open	Open a file from the archive