Questions tagged [point-clouds]
questions concerning the use of point clouds / data point sets in blender.
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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 ...
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How to load ".npy" file into Blender?
I have a 3-dimensional volume array of size (64, 64, 64) which has an extension of ".npy". I wanted to visualize in Blender so that I can do post-processing work from the software.
I tried ...
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312
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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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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 ...
- 141
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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 ...
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306
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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 ...
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How to Generate surface from points [duplicate]
Hi Guys,
I have a set of points in 3D. How can I convert this into a surface ?
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1k
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Stopping a point cache bake
I have a problem with blender sometimes: when I am running a simulation bake of some kinds, i.e. the point cache bakes, Blender will not allow you to interact with the interface at all. This is not ...
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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
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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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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:
...
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Curve from a set of points
I want to make 3D visualisation of a neuron. How can I plot curves from a set of points ? The data is shown in the image.
I found an artist created a mesh with this data. Same posted below.
Data is ...
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Can't export point clouds as a ply file
I want to export vertices (no mesh exists) as ply file. However, after exporting the data by File->Export->.ply, the generated ply file contains no vertices. Can anyone help? I'm using blender 2.8.
...
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705
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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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How to emit particles at intersection of faces (Scan animation)
I want to make an animation that explains laser scanning. It will consist of two videos.
One of the videos is rotating duck with a laser on it.
You can see the animation here. The animation is by me ...
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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Exporting camera tracking markers from Blender
I am trying to use blender to do some matchmoving and then export the camera along with the tracking markers for use in other software. After getting a successfull track, I have created a vertex cloud ...
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Visualizing 3D voxel data in Blender 2.8
right now I'm trying to visualize my scientific 3D data in Blender 2.8. So blenders built in textures or smoke simulations do not lead to the goal.
I've read that older releases of Blender do support ...
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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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Cycles generates distorted depth
The depth map generated by the Cycles rendering engine seems to have (radial) distortion, while the Blender renderer does not.
However, I could not find anywhere information on the internal camera ...
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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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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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How do I make a luminescent gas cloud?
How can I make a luminescent gas cloud, similar to the one shown in the picture below (labeled "Trapped Atoms")? Thank you.
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Assign colour to vertices given face texture, and enable conversion to a point cloud
I'm a-bit of a Blender newbie here so please forgive me if what I'm about to say sounds stupid, but I've been trying to solve this issue for far too long now and am becoming way too frustrated...so, ...
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Efficient Rendering of Many volumetric particles
I am working on a research project utilizing blender to visualize realistic clouds generated from a Large Eddy Simulation. I've been able to do so in limited respects.
These images, while pretty, ...
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How to recreate a "point cloud sandbox" effect in blender?
I wish to recreate this effect with particles.
Having the point cloud reforming the object after interaction with a field.
http://pointcloudsandbox.cornflex.org
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PythonScript to load data as colored point-cloud
Background
I want to render 3D points with color information for scientific visualization. I have several hundred thousands of points up to 2 million. For each point I have [xyz] coordinates and two ...
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Render 100k objects each with independent color and scale through time
I'm trying to visualize some data that is essentially 100k time series, each with an associated position. I'd like to render this with each object a sphere whose color/scale/alpha is driven by it's ...
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Creating a Fluffy Cloud
I am trying to create a cloud like this
(taken from Is there an easy way to make volumetric clouds for Cycles?)
The closest I am able to get is
I have taken these steps:
Switch to Blender Render
...
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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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Creating a static smoke, saving it and making it interactable
I've created a smoke simulation using quick smoke, I adjusted the values to my liking and ran the sim. (plane of smoke with a collider cube piercing it and the smoke being moved by the cube.) The sim ...
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deleting a fraction of vertices from a point cloud mesh
I have an object in my scene which is basically a point cloud, i.e. all vertices, no edges or faces. I'm trying to select a random fraction of this point cloud. Here is what the data looks like.
<...
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creating n random points on face of mesh
I'm trying to select 400 or so random points on the face of a mesh using a script (just on the face, not inside the volume) but I'm not sure how to do that.
I've tried looking into the following ...
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Using 3d scanned textures
I have been debating on purchasing a 3D scanner to make point cloud references of objects to model for games. For example, use the scanner to create a point cloud object of a character, then import ...
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Importing point cloud to Blender?
I have developed a 3D scanner, this is a relatively fast scan of a big space.
https://www.youtube.com/watch?v=FHAK1L_AQig
The scanner works great. it Provides text files in X; Y; Z format
The only ...
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What is a Point Density texture?
I see Blender 2.76 now has a feature called "Point Density" textures. Is this a particle system? If so, how is it different from previous particle systems?
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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:
...
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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 ...
user8158
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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 ...
- 647
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677
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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 ...
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170
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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 ...
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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 ...
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879
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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 ...
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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?
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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....
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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,...
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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. ...
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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 ...
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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:
...
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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 ...
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