Vector Error Filters

The format for the filter coefficients is [F(0,1)|F(1,1)|F(1,0)|F(1,-1)] where F(0,0) is the center pixel.

For an RGB image each filter co-efficient is a 3 x 3 matrix.

 Error Filter -- HVS model based on the Linearized CIELab Flohr et. al.[1993]

Fflohr  =

 [ 0.5269 -0.0000 0.0700   -0.0000 -0.0000 0.0068   0.0000 0.0668 0.0000     0.2814 0.0000 0.0481;
   0.0000 0.4577 -0.0000   -0.0000 -0.0000 -0.0000  0.0930 0.2328 0.0000   -0.0000 0.1938 0.0228;
 -0.0000 -0.0000 0.0000    -0.0000 -0.0000 0.0000   0.0330 -0.0000 0.9670  -0.0000 -0.0000 -0.0000];

 Error Filter -- HVS model based on Opponent Color Space Wandell and Zhang [1997]

Fopp  = 

 [0.5580 0.0000 0.0520    -0.0000 -0.0000 -0.0000    0.0000 -0.0000 -0.0000     0.3436 -0.0000 0.0464;
 -0.0000 0.4799 -0.0000  -0.0000 -0.0000 0.0000      0.0486 0.2477 0.0000      -0.0000 0.2238 0.0000;
  0.0000 -0.0000 0.2756   -0.0000 0.0000 0.0000       0.0653 -0.0000 0.6591      0.0000 -0.0000 0.0000];

 Error Filter -- HVS model based on YUV color Space

FYUV  =

 [0.5657 0.0000 0.0000      0.0000 -0.0000 0.0009    0.0307 -0.0000 0.0000   0.3873 0.0154 0.0000;
 -0.0000 0.4818 0.0000     0.0008 0.0000 -0.0000     0.0012 0.2769 0.0000   -0.0000 0.2394 -0.0000;
 -0.0000 -0.0000 0.4956    0.0014 -0.0000 0.0000   -0.0000 0.0043 0.2592     0.0000 0.0000 0.2395];

 Error Filter -- HVS model based on YIQ color Space

FYIQ  = 

[ 0.6005 0.0000 0.0000    0.0000 0.0000 -0.0000     0.0000 -0.0000 0.0000   0.3995 -0.0000 -0.0000;
 -0.0000 0.4659 0.0212   -0.0000 0.0000 0.0000      0.0297 0.2542 0.0000   -0.0000 0.2039 0.0251;
  0.0000 -0.0000 0.5424   0.0000 -0.0000 -0.0000   -0.0000 0.0203 0.1278   -0.0000 0.0000 0.3095];