It is used for BEV position encoding and it is set in src/detr/position_encoding.py init function. y_limit is the max depth of the region of interest (50 meters in our paper) and we set x_limit heuristically to be larger than half x length of ROI (which is also 50 meters). So we set it to 40. Any value above 25 in our case would work fine.
It is used for BEV position encoding and it is set in src/detr/position_encoding.py init function. y_limit is the max depth of the region of interest (50 meters in our paper) and we set x_limit heuristically to be larger than half x length of ROI (which is also 50 meters). So we set it to 40. Any value above 25 in our case would work fine.