timetest.m

关于半色调编码计算全息图的信息隐藏Matlab程序的说明： 算法实现主程序为CGHwatermark； 位相恢复函数为phaseSL； 用计算全息记录已知振幅和位相的复波前函数为Hol

% embedding time & extracting time test
clear
clc

amplitude=double(imread('lenna.bmp'));
aim=double(imread('szu.bmp'));
% load phase.mat;

 amplitude=imresize(amplitude,[64,64]);
 aim=imresize(aim,[64,64]);

% tic
% 
% hologram=Hologen(amplitude,phase,0.5,0.1);
% time1=toc;

% tic
% marks=fftshift(fft2(hologram));
% time2=toc;

tic
phase=phaseSL(amplitude,aim);
hologram=Hologen(amplitude,phase,0.5,0.1);
Bholo=AMhalftone(hologram);
time3=toc;

% Bholo=imresize(Bholo,[512,512]);
tic
markb=fftshift(fft2(Bholo));
time4=toc;