tf.nn.max_pool_with_argmax
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Performs max pooling on the input and outputs both max values and indices.
tf.nn.max_pool_with_argmax( input, ksize, strides, padding, data_format='NHWC', Targmax=None, name=None, output_dtype=None, include_batch_in_index=False )
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 | A list of ints that has length >= 4 . The size of the window for each dimension of the input tensor. |
strides | A list of ints that has length >= 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. |
Targmax | An optional tf.DType from: tf.int32, tf.int64 . Defaults to tf.int64 . |
include_batch_in_index | An optional bool . 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 Targmax . |
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Licensed under the Creative Commons Attribution License 3.0.
Code samples licensed under the Apache 2.0 License.
https://www.tensorflow.org/versions/r1.15/api_docs/python/tf/nn/max_pool_with_argmax