tf.contrib.layers.convolution2d(*args, **kwargs)
Adds a 2D convolution followed by an optional batch_norm layer.
convolution2d creates a variable called weights, representing the convolutional kernel, that is convolved with the inputs to produce a Tensor of activations. If a normalizer_fn is provided (such as batch_norm), it is then applied. Otherwise, if normalizer_fn is None and a biases_initializer is provided then a biases variable would be created and added the activations. Finally, if ac