matlab零基础入门图像运算和变换：38 radon逆变换重建图像.zip

%% 学习目标： radon逆变换实现图像重建 P = phantom(256); %原始图像 theta1 = 0:10:170; [R1,xp] = radon(P,theta1); theta2 = 0:5:175; [R2,xp] = radon(P,theta2); theta3 = 0:2:178; [R3,xp] = radon(P,theta3); %% 显示Radon变换结果 subplot(3,1,1), imagesc(theta1,xp,R1),title('theta1 = 0:10:170') colormap(hot); colorbar xlabel('\theta'); ylabel('x\prime'); subplot(3,1,2), imagesc(theta2,xp,R2),title('theta2 = 0:5:175') colormap(hot); colorbar xlabel('\theta'); ylabel('x\prime'); subplot(3,1,3), imagesc(theta3,xp,R3),title('theta3 = 0:2:178') colormap(hot); colorbar xlabel('\theta'); ylabel('x\prime'); %% Radon逆变换 I1 = iradon(R1,10); I2 = iradon(R2,5); I3 = iradon(R3,2); %% 显示Radon重构图像 figure(2), subplot(2,2,1),imshow(P),title('原始图像') subplot(2,2,2), imshow(I1),title('theta=10') subplot(2,2,3), imshow(I2),title('theta=5') subplot(2,2,4), imshow(I3),title('theta=2') %% 大仙QQ：1960009019 %% 在线教育微信公众号：大仙一品堂