[x264-devel] Regarding weight scale

[Sergey A. Sablin]

just read the text above this formula:

–	The inverse scanning process for transform coefficients as specified 
in subclause 8.5.5 is invoked with ScalingList4x4[ iYCbCr + ( 
(mbIsInterFlag  = =  1 ) ? 3 : 0 )] as the input and the output is 
assigned to the 4x4 matrix weightScale.

which means weightScale is inverse zig-zag scanned scaling list from 
either SPS, PPS or default one, which you hopefully can precompute.

Sergey.


mahesh k wrote:
> Hi all,
> Could anyone tell me how to calculate the weightScale (i,j)
> and what does it mean in spec 8.5.7.
> 
> => LevelScale( m, i, j) = weightScale( i, j) * normAdjust( m, i, j)  (8-312)
>  
> Regards,
> Mahesh.
>  
> 
> 
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