tf.image.image_gradients(image)
Defined in tensorflow/python/ops/image_ops_impl.py.
Returns image gradients (dy, dx) for each color channel.
Both output tensors have the same shape as the input: [batch_size, h, w, d]. The gradient values are organized so that [I(x+1, y) - I(x, y)] is in location (x, y). That means that dy will always have zeros in the last row, and dx will always have zeros in the last column.
Arguments:
image: Tensor with shape [batch_size, h, w, d].
Returns:
Pair of tensors (dy, dx) holding the vertical and horizontal image gradients (1-step finite difference).
Raises:
ValueError: Ifimageis not a 4D tensor.