tf.extract_image_patches

Aliases:

  • tf.extract_image_patches
  • tf.image.extract_image_patches
tf.extract_image_patches(
    images,
    ksizes,
    strides,
    rates,
    padding,
    name=None
)

Defined in generated file: tensorflow/python/ops/gen_array_ops.py.

See the guide: Tensor Transformations > Slicing and Joining

Extract patches from images and put them in the "depth" output dimension.

Args:

  • images: A Tensor. Must be one of the following types: float32, float64, int32, uint8, int16, int8, int64, bfloat16, uint16, half, uint32, uint64. 4-D Tensor with shape [batch, in_rows, in_cols, depth].
  • ksizes: A list of ints that has length >= 4. The size of the sliding window for each dimension of images.
  • strides: A list of ints that has length >= 4. 1-D of length 4. How far the centers of two consecutive patches are in the images. Must be: [1, stride_rows, stride_cols, 1].
  • rates: A list of ints that has length >= 4. 1-D of length 4. Must be: [1, rate_rows, rate_cols, 1]. This is the input stride, specifying how far two consecutive patch samples are in the input. Equivalent to extracting patches with patch_sizes_eff = patch_sizes + (patch_sizes - 1) * (rates - 1), followed by subsampling them spatially by a factor of rates. This is equivalent to rate in dilated (a.k.a. Atrous) convolutions.
  • padding: A string from: "SAME", "VALID". The type of padding algorithm to use.

    We specify the size-related attributes as:

          ksizes = [1, ksize_rows, ksize_cols, 1]
          strides = [1, strides_rows, strides_cols, 1]
          rates = [1, rates_rows, rates_cols, 1]
    
  • name: A name for the operation (optional).

Returns:

A Tensor. Has the same type as images.