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clear all;clc;
cm=0.01;
um=1e-6;
a=rgb2gray(imread('tri2.png'));
a=im2double(a);%ͼ°¸
[M,N]=size(a);
z=1;
lambda=0.63*um;
k=2*pi/lambda
hx=0.5*cm;hy=0.5*cm;
dhx=hx/M;dhy=hy/N;
x=dhx.*(ones(N,1)*[-M/2:M/2-1]);
y=dhy.*(ones(N,1)*[-M/2:M/2-1])';
b=exp(1i.*5*atan2(y,x));%Óô˹âÕÕÉäͼ°¸a
f0=a.*b;
[f2,dx1,dy1,x1,y1]=fresnel(f0,N,N,dhx,dhy,z,lambda);%fresnelº¯Êý¼û¸½¼þ
f2=abs(f2).^2;
f2=mat2gray(f2);
imshow(f2)

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  • 2013-09-22 11:02:24, 523 bytes
  • ¸½¼þ 2 : test1.m
  • 2013-09-22 11:02:26, 434 bytes

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smy1982

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clear all;clc;
cm=0.01;
um=1e-6;
a=rgb2gray(imread('tri2.png'));
a=im2double(a);
[M,N]=size(a);
z=100e-3;
lambda=0.63*um;
k=2*pi/lambda
hx=0.5*cm;hy=0.5*cm;
dhx=hx/M;dhy=hy/N;
x=dhx.*(ones(N,1)*(-M/2:M/2-1));
y=dhy.*(ones(N,1)*(-M/2:M/2-1))';
dx0=lambda*z/(M*dhx);
dy0=lambda*z/(M*dhy);

b=exp(1i.*5*atan2(y,x));
% imshow((angle(b)+pi)/(2*pi))
f0=a.*b;
[f2,dx1,dy1,x1,y1]=fresnel(f0,N,N,dhx,dhy,z,lambda);
f2=abs(f2).^2/max(max(abs(f2).^2));
f2=mat2gray(f2);
imshow(f2)

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smy1982

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wangwei225

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3Â¥: Originally posted by smy1982 at 2013-09-22 16:54:38
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ldmllion

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3Â¥: Originally posted by smy1982 at 2013-09-22 16:54:38
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smy1982

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5Â¥: Originally posted by ldmllion at 2013-09-22 18:23:20
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ldmllion

гæ (СÓÐÃûÆø)

ÒýÓûØÌû:
6Â¥: Originally posted by smy1982 at 2013-09-23 11:28:03
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