speed about get_map_mask

[haofengsiji]

Compared to Boston Seaport and Singapore One-North, , the loading speed of Singapore Queenstown and Singapore Holland Village's local map is very slow, as shown in the image below.

Is there any way to improve the loading speed of the local map?

def load_map(map_name):
    nusc_map = NuScenesMap(dataroot='../../data/nuscenes', 
                        map_name=map_name)
    patch_box = (1000., 1000., 100, 100)
    patch_angle = 0 # Default orientation where North is up
    layer_names = ('drivable_area', 'carpark_area', 'road_block', 'walkway', 'ped_crossing', 'stop_line', 'road_divider', 'lane_divider')
    canvas_size = (256, 256)
    map_mask = nusc_map.get_map_mask(patch_box, patch_angle, layer_names, canvas_size)

[iaoqian]

Have you solved this problem?