code: def tri_verts_area(tri_verts: torch.Tensor) -> torch.Tensor:
      """
      Computes the area of the triangle faces in tri_verts
      Args:
          tri_verts: tensor of shape (T, 3, 3)
      Returns:
          areas: the area of the triangles (T, 1)
      """
      add_dim = False
      if tri_verts.ndim == 2:
          tri_verts = tri_verts.unsqueeze(0)
          add_dim = True
  
      v0, v1, v2 = tri_verts.unbind(1)
      areas = torch.cross(v1 - v0, v2 - v0, dim=-1).norm(dim=-1) / 2.0
  
      if add_dim:
          areas = areas[0]
      return areas
  
imports: import pickle
  import random
  import unittest
  from typing import List, Tuple, Union
  import torch
  import torch.nn.functional
  from pytorch3d.io import save_obj
  from pytorch3d.ops.iou_box3d import _box_planes, _box_triangles, box3d_overlap
  from pytorch3d.transforms.rotation_conversions import random_rotation
  from .common_testing import get_random_cuda_device, get_tests_dir, TestCaseMixin
label_desc: Use image node_id 6 for calling a global function with example usage: tri_verts_area(tri_verts) and returns: areas