Bug in poisson_blending_func

[mirmashel]

Hello! I think I found a bug in the poisson_blending_func function. It seems that x and y coordinates of center are mixed up here.

[mirmashel]

I think there's a bug here too. The function should return the bbox to the scale of the entire image, not the sliding box. It might return something like this:

return bbox_mask, [[x0 + bbox[1], y0 + bbox[0]], [x0 + bbox[3], y0 + bbox[2]]]