RESPUE_LIN calculates the linear response to local DCT2D (expressed in contrast) of the YUV (or ATD) simulating the linear channel detector response SVH frequency. DCTn(f) = k1(f) DCT(f) where k1 is the CSF. Outputs: Resp = response kk1 = parameter k1 in matrix shape USE: [Resp,kk1] = respue_lin(dctinic,k1,canal)
0001 % RESPUE_LIN calculates the linear response to local DCT2D (expressed in contrast) 0002 % of the YUV (or ATD) simulating the linear channel detector response SVH frequency. 0003 % 0004 % DCTn(f) = k1(f) DCT(f) 0005 % 0006 % where k1 is the CSF. 0007 % 0008 % Outputs: 0009 % 0010 % Resp = response 0011 % kk1 = parameter k1 in matrix shape 0012 % 0013 % USE: 0014 % 0015 % [Resp,kk1] = respue_lin(dctinic,k1,canal) 0016 % 0017 0018 function [R,alfa]=respue_lin(dctinic,k,canal) 0019 0020 tam=size(dctinic); 0021 tam=tam(1); 0022 lados=[tam tam]; 0023 0024 lcuan=lados(1); 0025 0026 k1=k(canal,:); 0027 0028 k1=simrev(k1); 0029 k1=zigzag(k1); 0030 0031 alfa=k1; 0032 0033 cub=dctinic; 0034 0035 cub=zigzag(cub); 0036 0037 cub=abs(cub); 0038 0039 R=k1.*cub; 0040 R=dezigzag(R);