Questions about relative coordinate

[duwl-SITP]

Hi Yinbo,
Thank you for your work. When I use local_ensemble to calculate rel_coord, the rel_coord values sometimes exceed the range of [-1, 1]. I'm not sure if this is correct. Within the local region, half of the grid should be 1/H or 1/W, but if the sampled point deviates from the center, it seems that exceeding the range of [-1, 1] may occur.

liif/models/liif.py

Lines 81 to 83 in 4c833f8

	rel_coord = coord - q_coord
	rel_coord[:, :, 0] *= feat.shape[-2]
	rel_coord[:, :, 1] *= feat.shape[-1]