Here is a list of all namespaces with brief descriptions:

Nbbox_seg
Ncoco_mask
Ncoco_txt
Ncopy_files
Ncopy_labels
Ncopy_readme
Ncount_labels
Ncreate_annotations
Ndelete_images
Nget_masks
Nremap_classids
Nrename_files
Nresize
Nseparate_dataset
Ntesting
Ntraining
Nvisual_annotations