Cropping 3D LAS file

Question

stav marzuk 2021-11-1

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1576783-cropping-3d-las-file

评论： stav marzuk 2021-11-4

采纳的回答： Walter Roberson

Hello,

I'm working with a very large LAS file and because of its size I need to crop him to process piece by piece.

When i try to load him as 3D without cropping I get this:

I've tried using a bunch of LAS packages but can't seem to find any useful tool for that.

I've developed a 2D cropping tool for my previous project but I'm having trouble using it on 3D files..

Is there a way to crop LAS files effectivley, if so please let me know i'm desperate!

Thanks.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Walter Roberson 2021-11-1

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1576783-cropping-3d-las-file#answer_821673

在 MATLAB Online 中打开

%assuming cropping to a cuboid aligned with the axes
%Min_x, Max_x, Min_y, Max_y, Min_z, Max_z should be set appropriately
loc = ptCloud.Location;
x = loc(:,1);
y = loc(:,2);
z = loc(:,3);
mask = Min_x <= x & x <= Max_x & Min_y <= y & y <= Max_y & Min_z <= z & z <= Max_z;
cropped_points = loc(mask,:);
cropped_color = colorData(mask,:);
cropped_ptCloud = pointCloud(cropped_points, 'Color', cropped_color);