The input tensor, of rank 4 or rank 3 of shape
[batch, height, width, inChannels]. If rank 3, batch of 1 is assumed.
The filter size: [filterHeight, filterWidth]. If
filterSize is a single number, then filterHeight == filterWidth.
The strides of the pooling: [strideHeight, strideWidth]. If
strides is a single number, then strideHeight == strideWidth.
The type of padding algorithm:
same and stride 1: output will be of same size as input,
regardless of filter size.valid: output will be smaller than input if filter is larger
than 1x1.OptionaldimRoundingMode: "floor" | "round" | "ceil"A string from: 'ceil', 'round', 'floor'. If none is provided, it will default to truncate.
Computes the 2D average pooling of an image.