[XviD-devel] zig-zag

[suxen_drol]

On Wed, 12 Mar 2003 16:44:40 +0100 (CET) Christoph Lampert <chl at math.uni-bonn.de> wrote:

> On Wed, 12 Mar 2003, Christoph Lampert wrote:
> > But maybe the peaks are the reason why HQAC-PRED works. Btw. that just
> > checks for 1 directions (which is write to acpred_directions[block] in
> > predict_acdc()). Shouldn't somehow both be checked? 
> 
> Sorry, no. If I see it right, then AC prediction can just be switched on
> or off, the direction is determined by DC prediction and that the encoder
> can't decide on! It's calculated from neighbouring blocks DCT gradient. 
> 
> This sound horrible... is that right?

yes.

-- pete; life is like a box of ammo