def _DepthwiseConv2dNativeBackpropInputGrad(op, grad):
"""The derivatives for deconvolution.
Args:
op: the Deconvolution op.
grad: the tensor representing the gradient w.r.t. the output
Returns:
the gradients w.r.t. the input and the filter
"""
return [
None,
gen_nn_ops.depthwise_conv2d_native_backprop_filter(
grad,
array_ops.shape(op.inputs[1]),
op.inputs[2],
dilations=op.get_attr("dilations"),
strides=op.get_attr("strides"),
padding=op.get_attr("padding"),
explicit_paddings=op.get_attr("explicit_paddings"),
data_format=op.get_attr("data_format")),
gen_nn_ops.depthwise_conv2d_native(
grad,
op.inputs[1],
dilations=op.get_attr("dilations"),
strides=op.get_attr("strides"),
padding=op.get_attr("padding"),
explicit_paddings=op.get_attr("explicit_paddings"),
data_format=op.get_attr("data_format"))
]
def _DepthwiseConv2dNativeBackpropFilterGrad(op, grad):
return [
gen_nn_ops.depthwise_conv2d_native_backprop_input(
array_ops.shape(op.inputs[0]),
grad,
op.inputs[2],
dilations=op.get_attr("dilations"),
strides=op.get_attr("strides"),
padding=op.get_attr("padding"),
explicit_paddings=op.get_attr("explicit_paddings"),
data_format=op.get_attr("data_format")), None,
gen_nn_ops.depthwise_conv2d_native(
op.inputs[0],
grad,
dilations=op.get_attr("dilations"),
strides=op.get_attr("strides"),
padding=op.get_attr("padding"),
explicit_paddings=op.get_attr("explicit_paddings"),
data_format=op.get_attr("data_format"))
]