What am I doing wrong?
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Paul Hildebrandt
Oct 29, 2023, 8:16:15 PM10/29/23
to AliceVision
So I have tried meshroom several time now and have not gotten a
single successful mesh yet. In my last attempt, I added sift and akaze
and turned up both "describers" to ultra but the mesh was still garbage.
I have 42 images taken at 2 different heights (22 of them were discarded for some reason) which are all about 3000x2000. I'm turning the
model not moving the camera and the lights are all fixed.
Any ideas what is going wrong?
Link to a couple photos: https://photos.app.goo.gl/6wZV6eNHbCnhzLLs8
Ирина Клевцова
Jan 8, 2024, 6:01:13 PM1/8/24
to AliceVision
I can't see images for your links, but I can offer some general advice on troubleshooting common issues with photogrammetry, which may help you:
1. Image Quality and Overlapping
Ensure that the images are of high quality and well-lit.
Make sure there is sufficient overlap between images. Typically, around 60-80% overlap is recommended.
1. Image Quality and Overlapping
Ensure that the images are of high quality and well-lit.
Make sure there is sufficient overlap between images. Typically, around 60-80% overlap is recommended.
2. Camera Calibration
Check if your camera is properly calibrated in Meshroom. Sometimes, inaccurate camera parameters can lead to poor reconstructions.
Feature Points
The success of photogrammetry relies heavily on detecting and matching feature points between images. Ensure that your images have distinctive features and that the algorithm is detecting enough of them.
Check if your camera is properly calibrated in Meshroom. Sometimes, inaccurate camera parameters can lead to poor reconstructions.
Feature Points
The success of photogrammetry relies heavily on detecting and matching feature points between images. Ensure that your images have distinctive features and that the algorithm is detecting enough of them.
3. Camera Positions
If you have images taken at different heights, make sure the camera positions are well-distributed and that there is enough parallax between them for accurate reconstruction.
If you have images taken at different heights, make sure the camera positions are well-distributed and that there is enough parallax between them for accurate reconstruction.
4. Masking and Filtering
Use masks to remove irrelevant or repeating elements in your images. This can help eliminate noise and improve the quality of the reconstruction.
Use masks to remove irrelevant or repeating elements in your images. This can help eliminate noise and improve the quality of the reconstruction.
5. Adjust Parameters
Tweak the various parameters in Meshroom. Depending on your specific dataset and the characteristics of your scene, adjusting parameters like reconstruction, depth map filtering, and other settings might be necessary.
Tweak the various parameters in Meshroom. Depending on your specific dataset and the characteristics of your scene, adjusting parameters like reconstruction, depth map filtering, and other settings might be necessary.
6. Check the Log Output
Meshroom provides a detailed log during processing. Check the log for any warning or error messages. This can give you clues about what might be going wrong.
Meshroom provides a detailed log during processing. Check the log for any warning or error messages. This can give you clues about what might be going wrong.
7. Number of Images
Having a larger number of images can sometimes improve the reconstruction, but it's not a guarantee. If 22 images were discarded, it's worth investigating why. Maybe they were too similar or didn't contribute significantly.
Having a larger number of images can sometimes improve the reconstruction, but it's not a guarantee. If 22 images were discarded, it's worth investigating why. Maybe they were too similar or didn't contribute significantly.
8. Use Different Software
If you continue to face issues, consider trying other photogrammetry software to see if the problem persists or if it's specific to Meshroom. Software like Agisoft Metashape or RealityCapture are alternatives.
If you continue to face issues, consider trying other photogrammetry software to see if the problem persists or if it's specific to Meshroom. Software like Agisoft Metashape or RealityCapture are alternatives.
9. Community Support
Check forums or communities dedicated to photogrammetry or Meshroom. Others might have faced similar issues and can provide insights or solutions.
Remember that photogrammetry can be sensitive to various factors, and the success of your reconstruction may require some experimentation and fine-tuning of parameters.
Check forums or communities dedicated to photogrammetry or Meshroom. Others might have faced similar issues and can provide insights or solutions.
Remember that photogrammetry can be sensitive to various factors, and the success of your reconstruction may require some experimentation and fine-tuning of parameters.
понедельник, 30 октября 2023 г. в 03:16:15 UTC+3, Paul Hildebrandt:
Matthew Berry
Feb 3, 2024, 8:51:12 AM2/3/24
to AliceVision
sorry to jump on a post but my own conversation doesnt appear to be starting
i have managed yesterday to render a model with just 26 images. today i decided to take more from varying altitudes and distances to try and get a better quality rendering.
i now get an error on texturing.
"[14:30:40.298264][warning] Alembic LOAD: NO OBSERVATIONS_WITH_FEATURES: , mvg_visibilityFeatId: 0, mvg_visibilityFeatPos: 0, OBSERVATIONS_WITH_FEATURES flag: false"
any ideas how to resolve?
Paul Hildebrandt
Feb 3, 2024, 2:59:32 PM2/3/24
to AliceVision
I gave up. Couldn't get it to work.
Fabien Castan
Feb 4, 2024, 5:43:42 PM2/4/24
to Paul Hildebrandt, AliceVision
See here for turntable setup:
De : alice...@googlegroups.com <alice...@googlegroups.com> de la part de Paul Hildebrandt <pkhlin...@gmail.com>
Envoyé : samedi 3 février 2024 20:59
À : AliceVision <alice...@googlegroups.com>
Objet : Re: What am I doing wrong?
Envoyé : samedi 3 février 2024 20:59
À : AliceVision <alice...@googlegroups.com>
Objet : Re: What am I doing wrong?
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