class_docstr: Module that calculates Harris corners.
  
  .. image:: _static/img/harris_response.png
  
  See :func:`~kornia.feature.harris_response` for details.
code: def forward(
      self, input: Tensor, sigmas: Optional[Tensor] = None
  ) -> Tensor:
      return harris_response(input, self.k, self.grads_mode, sigmas)
  
imports: from typing import Optional, Union
  import torch
  from kornia.core import Module, Tensor, tensor
  from kornia.core.check import KORNIA_CHECK_SHAPE
  from kornia.filters import gaussian_blur2d, spatial_gradient
label_desc: Use image node_id 3 for calling the CornerHarris obj's underlying member method code with example usage: obj.forward(input, sigmas) and returns: harris_response