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⛄ 内容介绍
基于Matlab模拟球面变频条纹
⛄ 代码
clear all, close all, clc;
%% 球面变频条纹图
ncols = 512;
% mrows = 576;
% ncols = 800;
mrows =512;
% rgb_image = zeros(480, 640, 3);
% mrows = 512;
% rgb_image = zeros(512, 512, 3);
% model = zeros(mrows,ncols);
% model(:,370:403) = 1;
%
% red = zeros(mrows, ncols);
% green = zeros(mrows, ncols);
% blue = zeros(mrows, ncols);
% X=linspace(0,ncols,ncols);
% Y=linspace(0,mrows,mrows);
% X=linspace(-256,256,512);
% Y=linspace(-256,256,512);
X=1:512;
Y=X;
% red = zeros(mrows, 32);
% green = zeros(mrows, 32);
% blue = zeros(mrows, 32);
% x=linspace(0,32,32);
% y=linspace(0,mrows,mrows);
[x,y]=meshgrid(X,Y);
N = 4; % 相移数
s = 4; % 变频数
% s = 1; % 变频数
k = 4; % 变频底数
jj = 0;
% 变频
pitch = fix(ncols/k^(s-1)); % 周期宽度
% pitch = 32; % 频率最大时的周期宽度
for i = 1:s
t = k^(s-i);
f0 = pitch*t;
f1=0.1583;
fo = f0*ones(size(x,1),size(x,2));
% 相移
for n = 0:N-1
jj = jj+1;
delta = 2*pi*n/N;
l0=1000;d0=200;
theta=atan(d0/l0);
% f1=0.1583*f0;
c=160000;
% X=linspace(-120,120,512);Y=X;
% [x,y]=meshgrid(X,Y);
% for i=1:size(x,1)
% for j=1:size(y,1)
% % a=1-((x(1,i)^2+y(j,1)^2)./c);
% % b=a;
% % if 300^2-x(i,j)^2-y(i,j)^2>=150;
% % h(j,i)=sqrt(300^2-x(i,j)^2-y(i,j)^2);
% % else
% % h(j,i)=0;
% % end
% z(i,j) = 3*(1-x(i,j)).^2.*exp(-(x(i,j).^2) - (y(i,j)+1).^2) ...
% - 10*(x(i,j)/5 - x(i,j).^3 - y(i,j).^5).*exp(-x(i,j).^2-y(i,j).^2) ...
% - 1/3*exp(-(x(i,j)+1).^2 - y(i,j).^2)
% phiz(i,j)=(z(i,j)*2*pi*f1*d0)./(z(i,j)-l0);
% % phiz(j,i)=(h(j,i)*2*pi*f1*d0)./(h(j,i)-l0);
% % phi0(j,i)=(2*pi*f1*x(j,i)^2*sin(theta)*cos(theta))./(l0+x(j,i)*sin(theta)*cos(theta));
% phi0(i,j)=0;
% % phi(j,i)=phiz(j,i)+phi0(j,i);
% phi(i,j)=phiz(i,j)+phi0(i,j);
% % g(j,i)=a+b*cos(2*pi*f1*x(1,i)+phi(j,i));
% ball(i,j) =0.5-0.5*cos((2*pi.*x(i,j)+phi(i,j)*4)/f0+delta);
% end
% end
% z = z = 3*(1-x).^2.*exp(-(x.^2) - (y+1).^2) ...
% - 10*(x/5 - x.^3 - y.^5).*exp(-x.^2-y.^2) .. .
% - 1/3*exp(-(x+1).^2 - y.^2); %产生peaks函数
z=50*peaks(512);
phiz=(z*2*pi*f1*d0)./(z-l0);
phi0=(2*pi*f1*x^2*sin(theta)*cos(theta))./(l0+x*sin(theta)*cos(theta));
% p=mat2gray(ball);
ball =0.05-0.05*cos((2*pi.*x+phiz)/f0+delta);
ball1 = ((ball-min(min(ball)))/max(max(ball)));
% p=uint8(ball);
imwrite(ball1,strcat('ImageSine',num2str(jj),'.','bmp'));
% p=mat2gray(ball);
% imshow(p);
figure,imshow(ball,[]);
% imwrite(strcat('ImageSine',num2str(jj),'.','bmp'));
% test=mat2gray(ball,[0 255]);
% imwrite(test,strcat('ImageSine',num2str(jj),'.','bmp'));
end
end
%% plot ball
% l0=2000;d0=500;
% theta=atan(d0/l0);
% f0=0.1583;c=160000;
% X=linspace(-120,120,512);Y=X;
% [x,y]=meshgrid(X,Y);
% for i=1:size(x,1)
% for j=1:size(y,1)
% a=1-((x(1,i)^2+y(j,1)^2)./c);
% b=a;
% if 100^2-x(1,i)^2-y(j,1)^2>=59
% h(j,i)=abs(sqrt(100^2-x(1,i)^2-y(j,1)^2));
% else
% h(j,i)=-60;
% end
% phiz(j,i)=(h(j,i)*2*pi*f0*d0)./(h(j,i)-l0);
% phi0(j,i)=(2*pi*f0*x(1,i)^2*sin(theta)*cos(theta))./(l0+x(1,i)*sin(theta)*cos(theta));
% phi(j,i)=phiz(j,i)+phi0(j,i);
% g(j,i)=a+b*cos(2*pi*f0*x(1,i)+phi(j,i));
% end
% end
% imshow(mat2gray(g));
%% 16副变频条纹图产生 original
% figure,imshow(rgb_image,[]);
% figure,plot(rgb_image(400,:,1));
% grid on
%水平方向条纹
% if 0,
% j = 0;
% for i = 1:s
% t = k^(s-i);
% f0 = pitch*t;
%
% fo = f0*ones(size(Y,1),size(Y,2));
%
% % 相移
% for n = 0:N-1
% j = j+1;
% delta = 2*pi*n/N;
% % red(:,:) = 0.5-0.5.*cos(2*pi.*mod(X,fo)/f0+delta);
% % green(:,:) = 0.5-0.5.*cos(2*pi.*mod(X,fo)/f0+delta);
% % blue(:,:) = 0.5-0.5.*cos(2*pi.*mod(X,fo)/f0+delta);
% % red(:,321:341) = 0.5-0.5.*cos(2*pi.*mod(X(:,321:341),fo(:,321:341))/f0+delta);
% % green(:,321:341) = 0.5-0.5.*cos(2*pi.*mod(X(:,321:341),fo(:,321:341))/f0+delta);
% % blue(:,321:341) = 0.5-0.5.*cos(2*pi.*mod(X(:,321:341),fo(:,321:341))/f0+delta);
% % red(101:500,101:500) = 0.5-0.5.*cos(2*pi.*mod(X(101:500,101:500),fo(101:500,101:500))/f0+delta);
% % green(101:500,101:500) = 0.5-0.5.*cos(2*pi.*mod(X(101:500,101:500),fo(101:500,101:500))/f0+delta);
% % blue(101:500,101:500) =0.5-0.5.*cos(2*pi.*mod(X(101:500,101:500),fo(101:500,101:500))/f0+delta);
% % red(101:500,101:500) = 1;
% % green(101:500,101:500) = 1;
% % blue(101:500,101:500) = 1;
% r(:,:) = 0.5-0.5.*cos(2*pi.*mod(Y,fo)/f0+delta);
% g(:,:) = 0.5-0.5.*cos(2*pi.*mod(Y,fo)/f0+delta);
% b(:,:) = 0.5-0.5.*cos(2*pi.*mod(Y,fo)/f0+delta);
% red(101:500,201:600) = r;
% green(101:500,201:600) = g;
% blue(101:500,201:600) = b;
% red(101,:) = 0;
% green(101,:) = 0;
% blue(101,:) = 0;
% rgb_image(:,:,1) = red;
% rgb_image(:,:,2) = green;
% rgb_image(:,:,3) = blue;
% imwrite(rgb_image,strcat('hx',num2str(j),'.','bmp'));
% end
% end
% end
⛄ 运行结果
