walala wrote:
> 
> Can anybody tell me how to express 8x8 DCT in the form of 4x4 DCT?
> 
> 8x8 DCT = function( 4x4 DCT) ???
> 
> Is there any simple relationship?

In the inverse direction:

  4x4 DCT = even_part_of( 8x8 DCT )

The odd part of the 8x8 DCT seems independent, though.

Regards
Guido

Dear all,

Can anybody tell me how to express 8x8 DCT in the form of 4x4 DCT?

8x8 DCT = function( 4x4 DCT) ???

Is there any simple relationship?

Thanks a lot,

-Walala