set mask in Python ?

[peijason]

Tested both c++ and python.

1. In c++:
   bgs->process(img_input, img_mask, img_bkgmodel);
   we can input a img_mask.

2. In python:
   from demo.py and demo2.py.
   img_output = algorithm.apply(frame)

it looks there is nowhere for me to input an mask image?

Any suggestions?

[andrewssobral]

Hi @peijason , sorry for my delayed feedback to you.

In c++: bgs->process(img_input, img_mask, img_bkgmodel);
img_mask and img_bkgmodel are references to be filled by the process method.

In python the behavior is different.

img_output = algorithm.apply(frame)

img_output is equivalent to img_mask (but it returns by value instead of reference)
and img_bkgmodel can be given by:

img_bkgmodel = algorithm.getBackgroundModel()

Hope this helps you.

For info, I just released a new version of the BGSLibrary, now v3.1.0.
I tested it on Windows, Mac and Linux, both compiling the C++ library on OpenCV 3.4.7, 3.4.16 and 4.6.0.
I also tested its respective Python wrapper and GT user interface.
Thanks,
Andrews