Questions tagged [point-clouds]
questions concerning the use of point clouds / data point sets in blender.
41
questions with no upvoted or accepted answers
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Is there any way to render a perfect curve just like pointclouds in blender?
When we use the 'curve to mesh' node in geometry nodes, sometimes we cannot get an ideal results because mesh overlap frequently happens and leads to bad shading on surface, just like this figure:
So ...
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4
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Point cloud animation
I have around 5500 .ply files, which amount to about 7 GB of point cloud data; each file is one frame of animation.
Is there any feasible way of importing this into blender for processing? I am ...
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2
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1
answer
1k
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Geometry Nodes - Point Cloud from custom XYZ coordinates?
I'd like to create a point cloud using the Geometry Node Editor based on my own custom data.
The data is stored in a .txt file, plain [x,y,z] coordinates and looks like this:
...
2
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0
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134
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How to removing internal meshes from the stack of cubes?
I have a created a model with a stack of cubes that forms one big single model. There are so many unnecessary faces and cubes present inside the model. I have to remove all the internal faces to ...
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2
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1
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462
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Is it possible to turn particles into points/point cloud?
Now with the release of 3.1 and point clouds. I was wondering if it's possible to convert particles to point clouds and render them as point clouds. This seems like it would be much more efficient ...
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61
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Exporting PLY - No difference between moving object and moving its origin?
I create models in Blender, export them as point clouds and use them in another project.
Today I wanted to test the following use case and I am surprised that the exported ply file looks differently ...
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1
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0
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30
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Render Point Density to Texture
Was curious if anyone knows of a way to render out a point density to a 3dTexture for use in a game engine?
Usually these are just rendered to a red channel and then imported into a 3d texture in ...
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1
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202
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Dark horizon line between ocean and bottom of HDRi sky
I want to create a simple animation using the camera to fly through clouds (cloud panes, in this case) over a simple ocean. I've never used Blender to create an atmospheric scene before, so I'm ...
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1
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208
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Pointclouds from rendered depth images do not align
I am trying to render multiple RGB-D images of a given object in Blender 2.93 using the python interface. The scene contains a single object at position [0, 0, 0] and I am rotating a camera around it ...
1
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0
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29
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How can I disable interface smoothing of point clouds in 2.9?
I am working with point clouds and for a greater precision need to match viewport's point drawing of Blender 2.91 to 2.79.
Here is a comparison between them (Object mode):
As you can see newer ...
- 3,877
1
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0
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81
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Blender custom point density from file
I'm scoping out solutions for rendering custom volumetric data that I'll be parsing from some external source (a simulation being run externally to Blender). I'd like to use Blender's volumetric ...
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1
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312
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How to combine multiple .OBJ point cloud files into one point cloud?
I noticed that we can combine multiple OBJ meshes with this answer, but I don't know how to do this with point clouds. I have several point clouds that represent partial scans of an object and I ...
- 111
1
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54
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Weight-paint vertices without mesh in 2.81
Context: I'm trying to annotate point cloud data.
Is there a way to weight paint individual vertices that are not in a mesh?
In the image below, all vertices belong to the vertex group 'Group'. ...
- 41
1
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0
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2k
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How to make a mesh from vertices/points via triangulation?
I have a set of points which each of them can be represented as bezier curve. What I need to do is to make a mesh from them. Probably this meshing algorithm must be based on triangulation. However my ...
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11
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point cloud color in pcd format
I am trying to visualize point clouds with color in blender but I cannot achieve that. I understand that the ply or stl format does not support the point cloud color but now I am trying with the *.pcd ...
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17
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Point Cloud Visualizer point cloud is not visible with Oculus VR headset
I'm trying to use Oculus VR to view point cloud files (*.las, *.e57, *.ply). I have already installed Point Cloud Visualizer add-on. When I import a point cloud file, I can see it on my screen, but ...
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34
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Blender isn't reading color attributes from USD?
I'm recently learning about USD and it seems like a simple process to include color data with a mesh but I'm not seeing anything included in blender after import. I'm using this page https://docs....
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22
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Is it possible to chang geonodes Extrude Mesh for a face "Origin" to other position?
I'm using Blender 3.4.1. I'm learning geonodes. I wanted to use Geo Proximity to control Extrude Mesh on different faces. But I find that some face like "L shape" has the origin point in the ...
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0
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13
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Unable to add Compositor Point Density Node - 3D Point Cloud render
I am trying to create a 3D point cloud for a certain scene as part of a 3D vision project I am working on.
I am still learning how to use blender for this purpose, and after reading the documentation ...
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0
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21
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Cycles renders GeoNodes pointclouds as 3d spheres and sometimes as 2d disks; how can this be controlled?
When creating a Pointcloud through DistributePointsOnFace node the output is rendered by cycles on some occassions as actual 3d spheres and on others as 2d disks
; This happens altough the exact same ...
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178
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How to correctly import whitewater particles from fluid simulation (FLIP fluids)?
I exported a FLIP fluids simulation to Alembic (.abc) and imported it into another blend file.
The fluid itself works fine however the whitewater particles are not visible.
According to the docs, I ...
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0
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0
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38
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Assign and show vertex color in edit or object mode for a point cloud
I have displayed a point cloud after writing the following code.
...
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47
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How to render point cloud into svg?
I recently created a point cloud in Blender and now I wanted to export/render it into svg. I tried it with a few Youtube tutorials and Adonis but none of them worked, because every time I render it, ...
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48
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How to get point cloud produced by GN modifier by python?
I create a empty mesh and create many points in PointCloud and want to write a addon to export them, how to get them by python? i find the point cloud type doc, but don't get the api to get them:
...
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37
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coordinates for object vertices/edges after transform
I'm trying to get the position of some edges connecting to a couple of vertices, that was transformed with the following:
...
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0
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69
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Point cloud visualizer convert to particles render issue
i need some help with Point cloud visualiser
To create a scene, i convert some .ply files into particles system so i can get cool results with light and traveling. I did convert 4 files, but one of ...
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0
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0
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179
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Point cloud visualizer
sorry for my english, i'm looking to render this point cloud scene, so i used point cloud visualizer and convert it into particles system. It works and i can create a scene with lights, volumetry...
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- 21
0
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0
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38
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Blender rendering changing required data colour (red to magenta)
I am using Blender to create a 3D model of a location/building with data points demonstrating the data values through their colour. Red is negative, white is zero and, blue is positive. I imported the ...
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1
answer
660
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Can I apply UV texture map into Geometry Node points?
I'm making a coral. It has UV map image texture and I spread it out some points with Geometry Node on the surface of the mesh, and I wanted to apply my UV texture to points.
For instance, yellow ...
0
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0
answers
330
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Render Coloured Point Clouds as Collection of Spheres
I have a coloured point cloud in a .pcd file, that I can easily convert to a .ply file using Open3D. I would like to visualise ...
- 101
0
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1
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113
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Dense Cloud col attribute not showing
I'm using metashape agisoft to generate dense cloud from images and I exported the points in PLY and imported to blender.
then used attribute named it col to get the original color what calculated by ...
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0
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1
answer
329
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Misalignment of depth map when projecting two views into 3D point cloud
Similar to this question, I'm projecting two views (RGBD) back to 3D point cloud, but observed severe misalignment.
The two views are generated using the same blender script. The blender file is here.
...
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2k
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Import .ply with vertex colors into Blender
I'm trying to render something that would look like this:
I've had a similar problem here: Blender 2.81 doesn't seem to be importing vertex color for .ply
And in that question I linked where ...
- 339
0
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0
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222
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Blender Point Cloud access
Is there possibility how to access to the points in Point Cloud object in Python API Bleder > 2.92?
I want to change position of each point, set color and set scale.
I tried the code below. This ...
0
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1
answer
316
views
Mesh of vertices shown in viewport but not in render: how to render?
I have a mesh which only consists of vertices. The mesh is essentially a point cloud. I can see the object in the viewport but I can't render it. I want to create a quick animation video where the ...
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1
answer
108
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How do I set point density node for smoke?
I’m trying to make this animation , I’m using particles from an emitter to create the smoke and force fields to give them the direction I want .
The problem is I’d like to shade the smoke as it was ...
0
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1
answer
66
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cannot get wisps on ghost with point cloud node in blender
So I am trying to create a cool ghost pony with a particle system with a wind force and vortex behind it that blows upon the pony. I limited the particles life span to end just past to the pony so ...
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0
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1
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73
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Is it possible to procedurally render a mesh by generating a cloud of 3D RGB points?
I want to render monsters by procedurally generating a cloud of 3D RGB points representing their bodies. In other words, I want to be able to create a function:
...
- 101
0
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1
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706
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Calculate Faces from Point Cloud with Python
I have a bunch of vertices in a point cloud stored in an obj file (i can change the file if need be).
How do I calculate the faces from the point cloud using python? Example:
...
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0
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261
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Calculate 2.5D point cloud from scene
Ich would like to generate a 2.5D point cloud of a scene from the camera's perspective with python. Let's say the camera has a rosolution of [n,m] pixel and as a result I want to have n*m 3D vectors ...
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2k
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How to create faces/edges from vertices/points?
I can easily delete the faces and edges using delete only edges & faces option. It would be nice to have the possibility to reverse this operation.
Is there a way to create an universal script ...
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