pXY loss not dropping

[shervn]

pXY loss not dropping

[dingdingcai]

Thanks for your interest in our work! I didn't encounter any issue regarding the object center offset regression (delta_Pxy). Regressing delta_Pxy is a relatively easy sub-task compared to other components because it is just the object's origin projection offset percent (usually within [-0.5, 0.5]) from the cropped image center.

Please make sure that the ground-truth labels for delta_Pxy are correctly calculated, for example, by visually checking the ground-truth.

[shervn]

Thanks!!