BUG: Using the lk method with array videos

[domengorjup]

Although pyIDI supports inputting numpy.ndarray objects into the pyIDI constructor, instead of paths to .cih files (#13 ), setting the LucasKanade ('lk') method up with such objects currently won't work, because this method will automatically attempt to create temporary analysis files, looking at the .cih file path for their location.

This is the error log:

TypeError                                 Traceback (most recent call last)
<ipython-input-10-7ed824ef8d61> in <module>
----> 1 video.set_method('lk', roi_size=(31, 31))
      2 video.show_points()

c:\program files\python38\lib\site-packages\pyidi\pyidi.py in set_method(self, method, **kwargs)
     78         """
     79         if isinstance(method, str) and method in self.available_methods.keys():
---> 80             self.method = self.available_methods[method]['IDIMethod'](self, **kwargs)
     81         elif callable(method) and hasattr(method, 'calculate_displacements'):
     82             try:

c:\program files\python38\lib\site-packages\pyidi\methods\idi_method.py in __init__(self, video, *args, **kwargs)
     13         """
     14         self.video = video
---> 15         self.configure(*args, **kwargs)
     16 
     17 

c:\program files\python38\lib\site-packages\pyidi\methods\_lucas_kanade.py in configure(self, roi_size, pad, max_nfev, tol, int_order, verbose, show_pbar, processes, pbar_type, multi_type, resume_analysis, process_number, reference_image)
    107 
    108         self.start_time = 1
--> 109         self.temp_dir = os.path.join(os.path.split(self.video.cih_file)[0], 'temp_file')
    110         self.settings_filename = os.path.join(self.temp_dir, 'settings.pkl')
    111         self.analysis_run = 0

c:\program files\python38\lib\ntpath.py in split(p)
    183     Return tuple (head, tail) where tail is everything after the final slash.
    184     Either part may be empty."""
--> 185     p = os.fspath(p)
    186     seps = _get_bothseps(p)
    187     d, p = splitdrive(p)

TypeError: expected str, bytes or os.PathLike object, not numpy.ndarray

This could be solved either by omitting the automatic creation of analysis files if the cih_file argument of the pyIDI constructor is not a valid path, choosing another location (e.g. os.getcwd()) for these files.

[domengorjup]

solved