Questions tagged [photogrammetry]
Photogrammetry generates information about physical objects through the analysis of photographs. It is used in 3D modeling to generate models and textures in a workflow that can involve Blender. Use this tag for questions about photogrammetry that relate to Blender and not other parts of the workflow.
57 questions
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fit nurbs surface to a point cloud
There are many tools and tutorials to go from a surface to a point cloud, but I have a noisy, 3d scanned point cloud that aproximates a bumpy but mostly flat surface, and I would like to find a best ...
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how to fix jagged sharp edges in sculpting?
Hi i have a scanned mesh with sharp edges but blender's "draw sharp" and "pinch" brushes are giving me jagged edges while trying to sharpening those edges is there any ways i can ...
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How to constrain motion tracking to 3D gemetry?
I previously did motion tracking on a handful of frames and got an acceptable solution.
When I added markers to additional frames and asked Blender to compute a solution, the camera locations for the ...
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How to line up a point to two views?
I managed somehow to use Blender's built-in photogrammetry to get the camera on two frames to be aligned to two "different" (actually, the same image but mirrored) reference images.
I am, of ...
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Use Equirectangular 360 Photos As Textures for Room Models?
I am in the process of recreating an apartment in Blender and I have some 360 photos of it which I would like to use as textures for the walls, ceiling, and floor of the 3D model.
The apartment's ...
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I like to close a Mesh in Blender to the floor, see attached Photos
i have some photogrammetry meshes from Drones.
(from poly.cam, so *.obj, *.dae end even Pointcloud like *.ply is possible as initial file)
I like to close all open sides to the floor.
See Photos for ...
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Rendering really heavy meshes
I'm a beginner trying to create a render of a scene using about a dozen obj photogrammetry tiles that are extremely heavy. My blend file is about 7gb at the moment.
Every time I try to load them all ...
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How to convert photo to relief?
Just curious if anyone has recommendations for using Blender and maybe add-ons to make height map from a shaded photo, so I can take a picture of a relief carving and reproduce it for 3D printing.
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How to close off shell and create watertight mesh
I have a shell that was created from a photogrammetry scan of an object. I want to essentially create a set of faces that closes off the object and creates a watertight mesh for printing and further ...
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Use multiple image texture frames in Geometry Nodes
I have a depth map / point cloud, represented as a sequence of images (2D layers). They are layered spherically from a centre point, like an onion.
I'm trying to reconstruct the point cloud using ...
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Apply Local Rotation after Transform
I am currently writing my thesis essentially about Camera Re-Localization using SfM. To compare results and measure them properly, I created a dataset with ground truth in Blender. It works as follows:...
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How to align the position of two objects with each other
I have two different meshes representing the same object (objects obtained from photogrammetry).
Simple example:
The meshes of these objects are complex and have many vertices. How can I position ...
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3D Gaussian Splatting looks strange after import
I am trying to import a 3D Gaussian Splatting scan into Blender using the plugin from this tutorial. But for some reason, the scan looks terrible in Blender (although in Unreal it looks like it should)...
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3D scan data: Which format(s) most relevant for import to Blender?
I am using a 3D scanning app that can export to the following formats:
FBX - Supported by most 3D software and game engines
OBJ - Text-based 3D model format
GLB - Open 3D format for the web (binary ...
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Gltf 2.0 file imported from Polycam has strange holes in texture, but only when connected to the emission socket
I photoscanned a hallway and imported it into blender. It looks fine at first but when I try to connect the diffuse texture to the emission socket, random patches of the of the mesh do not emit, and ...
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Adding a basement to a photogrammetry
To add a basement to a photogrammetry, I tried the answer givent in this question : How to create a flat base to a photogrammetry model in Blender?
But so far I am stuck after the step : Add a ...
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physics : inflate a mesh until it reaches the limits of its container
I have a room scanned from a photogrammetry.
I would like to grow a mesh (like a baloon inflating) inside this room until it reaches the room boundaries.
The goal is to have a mesh that would be the &...
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Why is my .FBX scene exporting with only one image texture applied to each mesh, when I have multiple?
I'm trying to export a scene from blender and use it in UE5, but the image textures are all wrong when I export it. I have a few image textures for each mesh, but it seems that only one is applied for ...
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How to remove surfaces smoothly
I am very new to blender and I use it for fine tuning my Photogrammetry.
I scanned the shell below and I want to cut the lower rims evenly round.
I can use teh Select Circle tool but when I zoom in I ...
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Why the mesh is broken?
I imported a photogrammetry for rig it and animate it, but once I have the mesh it seems to be fractured, although is only one mesh. When I animate it folds in those fractures.What can I do?
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point cloud projection to image plane
I have a wide range of point cloud files and images in the same area（The photos are JPEG）. So both of them involve geo-referencing, so I want to project the point cloud back to the camera plane and ...
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Constructing a rough 3D model from two "360 degree" panoramas taken inside a small enclosed room (an aircraft cockpit)? [duplicate]
The National Museum of the US Air Force provides spherical panoramas of the cockpits of many of their aircraft. I am especially interested in the ones of the cockpit of the XB-70 at http://www....
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High Poly -> Low Poly Texture Bake Problem (UV seems to be ignored entirely)
I've been following this awesome tutorial (https://www.youtube.com/watch?v=-dc4KN2bdrw&ab_channel=BlenderBones) on converting photo scanned objects to usable, low poly objects. I've been able to ...
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Projection mapping terrain from elevation angle photo
I am trying to recreate a riverbank [Note: not the fort/buildings]from an historic photograph:
I'm having trouble finding a tutorial as the terms I'm using in my searches predominately bring up other ...
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Importing Agisoft Models Into Blender [duplicate]
I'm learning Blender and thought I would try importing some of the models I've created in Agisoft into Blender, however I'm running into an issue, nothing shows up.
I'm exporting the models from ...
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cleaning up glitched complex overlapping mesh architecture
I am relatively new to Blender (Rhino for now) and tried to collide multiple 3d photogrammetry models. In the end, I glitched it my resizing the meshes to create an unexpected architectural model. The ...
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Multiple photogrammetry models in one scene
hopefully this hasn't been asked before; I had this idea to have a scene in a Unity game project that I'm making where I would have multiple photogrammetry scanned models of objects, and animate them ...
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How do I improve the quality of imported OBJ objects and what blender processes or skills do I need to learn to fix them?
I'm learning how to create 3D models with drones. I have tried importing a 3d model obj from WebODM into blender, however once imported it loses a lot of the detail and it looks a mess. I have two ...
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How to import big mesh to Blender from photogrammetry
I want to import a mesh into Blender that I generated with Zephyr, but the mesh files became very large:
wrl: 7.6GB
obj: 9.5GB
ply: 3.0GB
I would like improve the mesh and the texture to make an ...
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How to create a negative space with a 3d model?
I have had some issues with cleaning up photogrammetry scans and ending up with the outside clean but lots of strange internal geometry that can be hard to get at and tidy up.
I can always clean up ...
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How to find models in scene without changing origin point?
I have been doing some experiments with photogrammetry and i imported some models into Blender but I realized after I imported them all that I could not find my models.
I rechecked my photogrammetry ...
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Strange unexpected elements when baking texture
Hello!
I am baking a texture from a high-poly photogrammetry model to a low-poly and I get those strange beige spots.
What am I doing wrong?
(see my baking setting on the side)
Thanks for your ...
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Modeling vs photogrammetry for 3d printing a mechanical part?
I want to automate my blinders with a motor.
Image added for the motions required.
I somehow need to make the "horn" that attaches the motor to the handle.
Have been thinking of a few ...
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Textures black out after remesh?
I have photoscanned a fire hydrant and as all photoscanned objects are, its mesh is a total wreck. So I remeshed it using Quadriflow remesh. But after the remesh was complete, the new object was ...
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Photogrammetry model turns matte black after adding modifiers after using sculpt tool
My Photogrammetry model turns matte black after I have been in sculpt mode and then try to add a Modifier (Remesh). I cannot get my texture back on my model once this has happened. This fault has ...
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Texture comes out yellow, red, black and green on model
I am having some issues with my Blender version 2.82.7 that I simply do not understand. I am working with my photogrammetry model which has a perfectly fine UV map and disfuse map, however when I ...
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How to create a flat base to a photogrammetry model in Blender?
I am trying to create something like this in Blender, but I don't know how exactly.
I captured a model of a WWI bunker with photogrammetry and processed it with Agisoft Metashape but I like to add an ...
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Edit and Prepare Models from Photogrammetry for Print using Blender
I created a photogrammetry rig and was able to generate a model using a program called 3D Zephyr. I can export it in .obj, .fbx, etc and open the model in Blender, but not much more than that. I'm ...
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3D model photogrammetry in blender software
I would like to know a 3D photogrammetry model is it more difficult to read in blender versus a normal or cartoon model ? I send screenshots of 3D photogrammetry model (if I'm not mistaken) and normal ...
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moving vertices along view axis between camera and vertex position
I do want to model something that i a have photographed in 2 different perspectives.
So after modeling it looking through one camera, i do want to slide the vertices back and forth along the vector ...
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It's possible to create a 3D or 2.5D video/animtation using the alembic file from photogrammetry?
my interest is about how create fast renders with the images aligned by photogrammetry. I think it's appropiate to use the alembic file (*.abc) from a a photogrammetry software such as meshroom.
I ...
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How to concurrently layer a second set of image data over a 3d mesh?
I am concurrently recording RGB and thermal data and I would like to map the thermal data along with the RGB data on to the 3d mesh after the model is rendered. Any advice?
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Blender Crashes when Baking High Resolution Textures "Circular Dependency" error
I have a high poly (1,3 Mio faces) photo scanned mesh with 17 generated 8k textures (totalling 500 MB)
All the texture are looking something like this one here:
My goal is to bake those 17 diffuse ...
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Workflow for using A LOT of reference images at precise angles?
I am going to sculpt a human head based on a model whose image is captured at VERY precise angles for this purpose. I think the angles those images are taken at are increments of 11.25 degrees:
{-45....
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How to decrease the number of tiny islands in Smart UV Project for photogrammetry models?
Smart UV project is making some pretty terrible UVs for my photogrammetry scans:
Lots and lots of tiny islands.
I already tried changing the smart UV project settings. I need margin at .1 so I can ...
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combining photogrammetry and a model in blender
Where to start, i've run out of googling for the answers. I Scanned a dolls house, with the intention of recreating it perfectly. However, the scan has a few holes in the mesh, and has about 3 million ...
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How to slow down camera movement?
I am trying to do photomatching in blender where I need to manually match the camera position to the object I'm modelling. My source image has really small focal length 13mm which makes the camera ...
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mtl file after exporting comes without texture map (map_kd ...)
I am quite new to blender. I have retopologized a high poly model with texture and then bake the texture (all in cycles) to the new model in blender. When I export the obj file the mtl file comes ...
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Photogrammetry retopology/projection like Zbrush
I am doing some photogrammetry scans using Agisoft Photoscan and importing the scans to Blender. The problem is that the UV maps are a mess, the meshes have too many polygons.
The most common ...
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Is there a photogrammetry addon or setup that works similar to FaceBuilder addon for NUKE?
Is there an arrangement that allows similar pinning of a generic (initially) mirrored mesh/facemesh ?
KeenTools FaceBuilder Demo 2018
I'm fairly sure Blender can come close to this with existing ...
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