MATLAB 对Ply文件进行 读取、显示、连线操作

1、函数：pcread

showPointCloud([x_s(:),y_s(:),z_s(:)+4]);
title("Sphere with the default color map");
xlabel("X");
ylabel("Y");
zlabel("Z");
hold on,
showPointCloud([x_t(:),y_t(:),z_t(:)]);

for k = 1:size(matchedPointsValid,1)
x = [matchedPointsValid(k,7) matchedPointsValid(k,10)];
y = [matchedPointsValid(k,8) matchedPointsValid(k,11)];
z = [matchedPointsValid(k,9)+4  matchedPointsValid(k,12)];
plot3(x,y,z,"r.-");
hold on,
end
    saveas(hf,matched_points_file);  % 保存图片

蒙特卡洛方法

画矩形 ：

选取矩形框内数据：

1. figure, imshow("pout.tif");
   
2. h = imrect;
   
3. position = wait(h);

showPointCloud([x_s(:),y_s(:),z_s(:)+4]);
title("Sphere with the default color map");
xlabel("X");
ylabel("Y");
zlabel("Z");
hold on,
showPointCloud([x_t(:),y_t(:),z_t(:)]);

for k = 1:size(matchedPointsValid,1)
x = [matchedPointsValid(k,7) matchedPointsValid(k,10)];
y = [matchedPointsValid(k,8) matchedPointsValid(k,11)];
z = [matchedPointsValid(k,9)+4  matchedPointsValid(k,12)];
plot3(x,y,z,"r.-");
hold on,
end
    saveas(hf,matched_points_file);  % 保存图片