How to generate a point cloud in 3D?
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Hello dear community,
I would like to know if there is a fast way to create a cloud in 3D which consists of points. I would like to get something like this:
The points should be written into a simple matrix. Each row should represent one point. Thank you for your help!
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Mike Garrity
il 16 Nov 2015
Modificato: Mike Garrity
il 16 Nov 2015
This might be a good starting point:
[x,y,z] = ndgrid(1:5:100,1:5:100,1:5:100);
scatter3(x(:),y(:),z(:),'.')
The ndgrid function will return multiple arrays of the same shape with one of its inputs replicated along one dimension of each of its outputs.
The syntax x(:) says to convert that 3D array into a vector.
The scatter3 function takes 3 vectors and plots a marker at the location defined by each row of the three.
The '.' argument to scatter3 tells it to draw a dot, rather than one of the bigger and more complex markers.
6 Commenti
Halil Bölük
il 30 Apr 2020
Hello RAMYA. I need stl to point cloud transformation. Did you find anything about this ?
elnaz gh
il 14 Set 2020
Hello you can use meshlabjs(it is online) and upload yor .stl file and then search "sampling" then select poission disk sampling or monto carlo sampling,
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faten emad
il 17 Set 2018
Hi Mike, your code is very good. I want to generate a point cloud of moving scan camera can you help me?
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