class_docstr: Laplacian loss is refer to
  https://github.com/JizhiziLi/AIM/blob/master/core/evaluate.py#L83
class_docstr_tok: ["Laplacian","loss","is","refer","to","https",":","\/\/github.com\/JizhiziLi\/AIM\/blob\/master\/core\/evaluate.py","#","L83"]
code: def __init__(self):
      super().__init__()
      self.gauss_kernel = self.build_gauss_kernel(
          size=5, sigma=1.0, n_channels=1
      )
  
imports: import paddle
  import paddle.nn
  import paddle.nn.functional
  from paddleseg.cvlibs import manager
  import cv2
label_desc: Use image node_id 1 to create a new LaplacianLoss object from inherited base classes: nn with example: obj = LaplacianLoss()