in dataset/co3d_dataset.py [0:0]
def _invalidate_indexes(self, filter_seq_annots=False):
# update seq_to_idx and filter seq_meta according to frame_annots change
# if filter_seq_annots, also uldates seq_annots based on the changed seq_to_idx
self._invalidate_seq_to_idx()
if filter_seq_annots:
self.seq_annots = {
k: v for k, v in self.seq_annots.items() if k in self.seq_to_idx
}