import tensorflow as tf

            depthwise_filter = tf.get_variable(
                name='depthwise_filter_w', shape=depthwise_filter_shape,
                initializer=w_init
            )

            result = tf.nn.depthwise_conv2d(
                input=input_tensor,
                filter=depthwise_filter,
                strides=[1, stride, stride, 1],
                padding=padding,
