[XviD-devel] Hadamard Transform

Marc FD xvid-devel@xvid.org
Thu, 5 Sep 2002 22:47:35 +0200


> a'  =  (a + b + c + d + e + f + g + h) /8
> b'  =  (a + b + c + d - e - f - g - h) /8
> c'  =  (a + b - c - d - e - f + g + h) /8
> d'  =  (a + b - c - d + e + f - g - h) /8
> e'  =  (a - b - c + d + e - f + g - h) /8
> f'  =  (a - b - c + d - e + f + g - h) /8
> g'  =  (a - b + c - d - e + f - g + h) /8
> h'  =  (a - b + c - d + e - f + g - h) /8

ARGH !!!!! this is FALSE !! i've lost 2 hours on it =(