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« on: April 12, 2021, 06:28:34 PM »
Using Metashape Pro version 1.7.2.12065, I have produced a model from 334 images of an object shot on a turntable. The item is a metal sculpture of a viking ship and several details - in particular narrow cords and a small flag on top - are missing from the mesh despite being well represented in the dense cloud. After many trials I used the "Interpolation: Disabled" setting and was able to retain these features in the model. However, then I was unable to build a texture for the model and the program froze completely on several operations, including "Close Holes" and while parametrizing the texture atlas. I gather this is because the disabled interpolation causes a messy mesh with many disconnected parts, but I don't know how to get around it since the other options miss crucial parts of the dense cloud.
I have tried resizing the region to make a mesh of only the omitted details thinking I would combine the two meshes. However, with interpolation enabled it still fails to model these areas. I tried to use "Merge Chunks" to combine the large interpolated model with the small model of the detail using disabled interpolation (checking "Merge models") but the resultant merged chunk does not contain any 3d models, only the cameras.
Apart from failing to recreate these portions of the object, the program does a very good job with interpolation enabled and generates the texture perfectly - so I hope there is some solution. I don't have the skills to recreate these portions in an outside modeling program and this would be far less desirable than simply modeling them in Metashape, but I am also open to suggestions in that direction.
Thank you very much for considering my problem. Following is the log info for the two chunks I tried to combine:
For the chunk with the small “detail” non-interpolated model (428,134 faces):
General
Cameras 334
Aligned cameras 334
Coordinate system Local Coordinates (m)
Rotation angles Yaw, Pitch, Roll
Point Cloud
Points 424,271 of 528,804
RMS reprojection error 0.156836 (0.836528 pix)
Max reprojection error 0.502332 (28.1294 pix)
Mean key point size 3.99739 pix
Point colors 3 bands, uint16
Key points No
Average tie point multiplicity 3.20533
Alignment parameters
Accuracy Highest
Generic preselection No
Reference preselection No
Key point limit 100,000
Tie point limit 12,000
Exclude stationary tie points Yes
Guided image matching Yes
Adaptive camera model fitting Yes
Matching time 6 hours 18 minutes
Matching memory usage 2.92 GB
Alignment time 1 minutes 45 seconds
Alignment memory usage 518.67 MB
Software version 1.7.2.12065
File size 38.64 MB
Depth Maps
Count 334
Depth maps generation parameters
Quality Ultra High
Filtering mode Disabled
Processing time 1 hours 44 minutes
Memory usage 20.51 GB
Software version 1.7.2.12065
File size 4.84 GB
Dense Point Cloud
Points 156,411,400
Point colors 3 bands, uint16
Depth maps generation parameters
Quality Ultra High
Filtering mode Disabled
Processing time 1 hours 44 minutes
Memory usage 20.51 GB
Dense cloud generation parameters
Processing time 3 hours 25 minutes
Memory usage 98.59 GB
Software version 1.7.2.12065
File size 2.78 GB
Model
Faces 428,134
Vertices 413,565
Vertex colors 3 bands, uint16
Depth maps generation parameters
Quality Ultra High
Filtering mode Disabled
Processing time 1 hours 44 minutes
Memory usage 20.51 GB
Reconstruction parameters
Surface type Arbitrary
Source data Dense cloud
Interpolation Disabled
Strict volumetric masks No
Processing time 2 minutes 30 seconds
Memory usage 6.71 GB
Software version 1.7.2.12065
File size 12.84 MB
For the chunk with the large interpolated model (31,282,279 faces):
General
Cameras 334
Aligned cameras 334
Coordinate system Local Coordinates (m)
Rotation angles Yaw, Pitch, Roll
Point Cloud
Points 424,271 of 528,804
RMS reprojection error 0.156836 (0.836528 pix)
Max reprojection error 0.502332 (28.1294 pix)
Mean key point size 3.99739 pix
Point colors 3 bands, uint16
Key points No
Average tie point multiplicity 3.20533
Alignment parameters
Accuracy Highest
Generic preselection No
Reference preselection No
Key point limit 100,000
Tie point limit 12,000
Exclude stationary tie points Yes
Guided image matching Yes
Adaptive camera model fitting Yes
Matching time 6 hours 18 minutes
Matching memory usage 2.92 GB
Alignment time 1 minutes 45 seconds
Alignment memory usage 518.67 MB
Software version 1.7.2.12065
File size 38.64 MB
Depth Maps
Count 334
Depth maps generation parameters
Quality Ultra High
Filtering mode Disabled
Processing time 1 hours 44 minutes
Memory usage 20.51 GB
Software version 1.7.2.12065
File size 4.84 GB
Dense Point Cloud
Points 156,411,400
Point colors 3 bands, uint16
Depth maps generation parameters
Quality Ultra High
Filtering mode Disabled
Processing time 1 hours 44 minutes
Memory usage 20.51 GB
Dense cloud generation parameters
Processing time 3 hours 25 minutes
Memory usage 98.59 GB
Software version 1.7.2.12065
File size 2.78 GB
Model
Faces 31,282,279
Vertices 15,658,885
Vertex colors 3 bands, uint16
Depth maps generation parameters
Quality Ultra High
Filtering mode Disabled
Processing time 1 hours 44 minutes
Memory usage 20.51 GB
Reconstruction parameters
Surface type Arbitrary
Source data Dense cloud
Interpolation Enabled
Strict volumetric masks No
Processing time 54 minutes 26 seconds
Memory usage 72.75 GB
Software version 1.7.2.12065
File size 716.27 MB