code: def fov2focal(fov, pixels):
      return pixels / (2 * math.tan(fov / 2))
  
file_path: splatter-image/utils/graphics_utils.py
imports: import torch
  import math
  import numpy
  from typing import NamedTuple
label_desc: Use image node_id 6 for calling a global function with example usage: fov2focal(fov, pixels) and returns: unknown