tf.nn.max_pool_with_argmax

Performs max pooling on the input and outputs both max values and indices.

The indices in argmax are flattened, so that a maximum value at position [b, y, x, c] becomes flattened index: (y * width + x) * channels + c if include_batch_in_index is False; ((b * height + y) * width + x) * channels + c if include_batch_in_index is True.

The indices returned are always in [0, height) x [0, width) before flattening, even if padding is involved and the mathematically correct answer is outside (either negative or too large). This is a bug, but fixing it is difficult to do in a safe backwards compatible way, especially due to flattening.

Args
input A Tensor. Must be one of the following types: float32, float64, int32, uint8, int16, int8, int64, bfloat16, uint16, half, uint32, uint64. 4-D with shape [batch, height, width, channels]. Input to pool over.
ksize An int or list of ints that has length 1, 2 or 4. The size of the window for each dimension of the input tensor.
strides An int or list of ints that has length 1, 2 or 4. The stride of the sliding window for each dimension of the input tensor.
padding A string from: "SAME", "VALID". The type of padding algorithm to use.
data_format An optional string, must be set to "NHWC". Defaults to "NHWC". Specify the data format of the input and output data.
output_dtype An optional tf.DType from: tf.int32, tf.int64. Defaults to tf.int64. The dtype of the returned argmax tensor.
include_batch_in_index An optional boolean. Defaults to False. Whether to include batch dimension in flattened index of argmax.
name A name for the operation (optional).
Returns
A tuple of Tensor objects (output, argmax).
output A Tensor. Has the same type as input.
argmax A Tensor of type output_dtype.

© 2020 The TensorFlow Authors. All rights reserved.
Licensed under the Creative Commons Attribution License 3.0.
Code samples licensed under the Apache 2.0 License.
https://www.tensorflow.org/versions/r2.4/api_docs/python/tf/nn/max_pool_with_argmax