Questions tagged [point-clouds]

questions concerning the use of point clouds / data point sets in blender.

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2answers
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How to find evenly spaced coordinates/point cloud of an object?

I'd like to convert a mesh object into a point cloud. I started using the vertices: ...
3
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1answer
420 views

Is there an alternative to point density for rendering with GPU?

Finally working with some clouds. Rendering is horribly slow with my i5 CPU, would be much better with a GTX 970, but if I try that then shaders that use point density no longer work. Is there a good ...
5
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2answers
5k views

Csv Import pointcloud into Blender

I have 24 points which correspond to 12 different "elements" (2 points per element) saved in an .csv file with the following column order (1: Element Name, 2: x, 3: y, 4: z). I would like to import ...
1
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1answer
568 views

Associate extra scalar data field with mesh or pointcloud

I work with scientific pointclouds and I often have extra columns of data in my .ply files. For example, I might have a column for "temperature" where there is a temperature value for each point or ...
0
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0answers
147 views

Color from imported OBJ not displayed in Blender [duplicate]

I want to import some .obj file that I have made with MeshLab. The point cloud file was actually in .pcd format and I used pcl_pcd2ply tools from PCL to change it into PLY-Format. Then I import it ...
8
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2answers
5k views

How can I create a point cloud from the surfaces of a model?

How can one go about generating a point cloud from the surfaces/faces of a model? Initially the models are going to be fairly simple (just cubes, cylinders, and spheres), but eventually the models ...
7
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1answer
807 views

Render 3 dimensional scalar field

I have a function which assigns to "every" point in space (x,y,z) a scalar value d. I want to, somehow, visualize this function ...
3
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3answers
5k views

Draping 2D image over point cloud or mesh

I'm new to blender and could not find this in help files. Can blender be used to drape a 2D image onto a 3D point cloud or mesh? If yes, can someone point me to a tutorial on that?
2
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1answer
2k views

Most efficient way to remove unwanted vertices in an object with 59,000 points?

I have imported a 3D-scanned .OBJ file from KScan3D, which is 3D scanning software. I am trying to scan a model car, but would like to remove all the unnecessary points for the purposes of 3D printing....
1
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0answers
172 views

How to draw a colored point cloud from a .ply PCD file and render it? [duplicate]

To generate a point cloud i am using planes in blender, to compensate for unavailability of POINT data primitive. After reading the .ply point cloud file(PCD) the planes are added in the blender scene,...
5
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2answers
2k views

Blender gets very slow to draw a scene having large number of plane?

I have a very simple python script to generate planes in the scene. I want to generate 50000 planes in a scene, to compensate for unavailability of POINT primitive, so that i can render a point cloud. ...
5
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2answers
14k views

Wrapping a mesh around point cloud with cavities

I have a series of point clouds I want to convert to mesh (there are points inside the object, uniformly distributed, not only on the surface). I want to generate a model of the surface of the point ...
3
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1answer
2k views

Programmatically generate random point-cloud within solid mesh

I think I'm nearly there, thanks to two super scripts from CoDEmanX. The first script shows the bounding box around an object: ...
3
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1answer
14k views

How can I prepare a point cloud for visualization in Blender using MeshLab?

I have access to some laser scanned LAS files. I can convert the LAS files to X, Y, Z point clouds using LASTools. Once a point cloud is in an X, Y, Z ascii format it can be imported into MeshLab. I ...
6
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1answer
1k views

Setting Voxel Coordinates

I've been looking online for a long time, searching for documentation on the subject of Blender Voxel Data. So far, I know that Blender uses many file types, including the .bvox file type. For the ....
8
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2answers
8k views

Efficient way(s) to render point clouds of 3D scan datas in cycles

Problem: I would like to render a 3D scan data (so no volume) containing only vertices (no faces or edges) with colour informations in cycles. Tried so far: I tried particles (spawning spheres on ...

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