Agisoft Metashape
Agisoft Metashape => General => Topic started by: JohnyJoe on July 19, 2020, 05:44:41 PM
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In Agisoft metashape (photoscan), is there a way how to clean a mess of (not just) floating points? After generating dense point cloud you get a lot of "mess points" (pictures below) - some are floating, some are "connected" to the main shape... These are "garbage points", is there some "automated" solution/feature of how to get rid of them...? Sure i do it by hand but it costs a lot of time... Any feature/worfklow/function in agisoft how to get rid of them quickly/automaticaly...? (at least partially)...?
If agisoft doesnt have such feature (in which version?) is there some other software that can clean this easily?
https://postimg.cc/d7Y3G8kf
https://i.postimg.cc/TPybM0RT/garbagepoints.jpg
Thanks
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Have you generated your dense cloud with confidence?
If so, you can apply that filter; using a range from 3 - 255 gives usually quite a good result. Any other remaining floaters are easily removed with the freehand selection tool.
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Bastiaan, Filtering the cloud by confidence is nice. But how do you then generate other products that display only the filtered cloud? I don't see that as an option when generating a Mesh, for example. One way would be to classify the filtered points to a unique classification and use only that, but maybe there is a better way?
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That is indeed the way to go as far as I know;
- Confidence filter the dense cloud
- Select all remaining points
- Assign those points to a class
From this point on you can either process only that class further into a mesh or tiled model, or you can reset the filter and delete all points in the other classes.
The way to do this would be; (continueing the previous steps)
- Reset filter
- Filter by class and unchecking the class where the points are that you want to keep
- delete all points
- reset filter
- reset classes
After this you can delete the remaining floating points by hand or the other tools Metashape provides.
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Thanks!
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Im not sure how to generate points with confidence...? I dont see that option ("tick") there when generating dense point cloud (in that dialog window)
The only options in the "Build Dense Cloud" options window i see, in the "advanced section" are Depth Filtering, Reuse Depth Maps and Calculate Point Colors.... I dont see any "Calculate point confidence" or whatever there... (im using 1.5.5 Metashape)...
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Looks like it was added to 1.6.0 in November 2019.
https://www.agisoft.com/pdf/metashape_changelog.pdf