Reversible WHT pair
This commit changed the forward and the inverse 4x4 Walsh Hadamard transform to a new pair, where the inverse transform can pefectly reconstuct the input to forward transform. It also does so without changing the input and output value range. Even more, it does not change the complexity of the transforms. While it was not expected to improve the results of our current test, it does improve std-hd set by 0.2% on all metrics. No change on derf. Change-Id: Ie4f23ddd3a0f3c5fbe97fb58399f860031f99337
Please register or sign in to comment