tensorflow:: ops:: DepthwiseConv2dNative

Computes a 2-D depthwise convolution given 4-D input and filter tensors.

Summary

Given an input tensor of shape [batch, in_height, in_width, in_channels] and a filter / kernel tensor of shape [filter_height, filter_width, in_channels, channel_multiplier] , containing in_channels convolutional filters of depth 1, depthwise_conv2d applies a different filter to each input channel (expanding from 1 channel to channel_multiplier channels for each), then concatenates the results together. Thus, the output has in_channels * channel_multiplier channels.

for k in 0..in_channels-1
  for q in 0..channel_multiplier-1
    output[b, i, j, k * channel_multiplier + q] =
      sum_{di, dj} input[b, strides[1] * i + di, strides[2] * j + dj, k] *
                        filter[di, dj, k, q]

Must have strides[0] = strides[3] = 1 . For the most common case of the same horizontal and vertices strides, strides = [1, stride, stride, 1] .

Args:

• scope: A Scope object
• strides: 1-D of length 4. The stride of the sliding window for each dimension of input .
• padding: The type of padding algorithm to use.

Optional attributes (see Attrs ):

• data_format: Specify the data format of the input and output data. With the default format "NHWC", the data is stored in the order of: [batch, height, width, channels]. Alternatively, the format could be "NCHW", the data storage order of: [batch, channels, height, width].
• dilations: 1-D tensor of length 4. The dilation factor for each dimension of input . If set to k > 1, there will be k-1 skipped cells between each filter element on that dimension. The dimension order is determined by the value of data_format , see above for details. Dilations in the batch and depth dimensions must be 1.

Returns:

• Output : The output tensor.

Public attributes

Operation operation

::tensorflow::Output output

Public functions

 DepthwiseConv2dNative(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input input,
  ::tensorflow::Input filter,
  const gtl::ArraySlice< int > & strides,
  StringPiece padding
)

 DepthwiseConv2dNative(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input input,
  ::tensorflow::Input filter,
  const gtl::ArraySlice< int > & strides,
  StringPiece padding,
  const DepthwiseConv2dNative::Attrs & attrs
)

::tensorflow::Node * node() const 

 operator::tensorflow::Input() const 

 operator::tensorflow::Output() const 

Public static functions

Attrs DataFormat(
  StringPiece x
)

Attrs Dilations(
  const gtl::ArraySlice< int > & x
)

Attrs ExplicitPaddings(
  const gtl::ArraySlice< int > & x
)