code: def ltrb_to_xywh(bboxes):
      return dali.fn.coord_transform(
          bboxes,
          M=[
              0.5,
              0.0,
              0.5,
              0.0,
              0.0,
              0.5,
              0.0,
              0.5,
              -1.0,
              0.0,
              1.0,
              0.0,
              0.0,
              -1.0,
              0.0,
              1.0,
          ],
      )
  
imports: import nvidia.dali
label_desc: Use image node_id 2 for calling a global function with example usage: ltrb_to_xywh(bboxes) and returns: dali