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Messages - ihabali

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General / OIS/IBIS for photogrammetry
« on: October 02, 2020, 06:24:35 PM »
Hello All,
I wanted to know how optical or sensor based image stabilization features affect photogrammetry results. I assume that stabilizing footage this way throws off the calculated triangulation results, is my understanding correct?

Thanks Alexey. Leaving the other two libs in place was causing metashape to complain about some system time functions. After removing these two, metashape starts with no errors/warnings at all.

After a bit of trial and error tracking the libraries used with ldd, the only solution that worked was to delete the included libgmp which forces the application to use the system based libgmp. There were a couple of dependencies that were resolved by installing the libraries from the system repositories and creating some symlinks. Here's what I did at the end:
remove libgmp under ./lib
remove libgfortran under ./lib
remove libopenblas under ./lib

Alexey or anyone, any ideas on how to resolve this issue?

Hi Alexey,
Yes starting from the script.  I checked libhogweed with ldd and it resolves the link correctly to libgmp under /lib64 so I'm not sure I understand why it can't find the function.

Also in the script the following lines:


They point to a non-existing pythong directory in "$dirname". Is that the way it's supposed to be?

Just attempted to run Metshape for the first time on my new AMD Cent OS 8 workstation and I'm getting this error : metashape: symbol lookup error: /lib64/ undefined symbol: __gmpn_cnd_sub_n. Any ideas what's happening?

Feature Requests / Better Selection Tools
« on: November 08, 2016, 09:55:33 AM »
Suggestion to introduce variable size brush type selection tools rather than just the standard shapes to help with the dense cloud cleanup processes before generating meshes.

General / Only align camera but not use it to compute model or texture
« on: April 24, 2016, 06:34:40 PM »
I'm sure I missed something in the manual about this but is there a way to mark a camera so it does not contribute to point cloud/mesh creation or texture but is just there to be aligned relative to the generated model and the rest of the cameras?

I basically created a model from a group of still but would like to align a video camera(using a single frame still) so I can use that camera's position to project a video on portions of the generated model(all this will be done in C4D)


General / Re: New to Photoscan, in need of help !
« on: October 13, 2015, 09:39:43 AM »
It would be great if you could post the conclusions back to this thread, I too am new to PS and while I'm getting ok results, they are not as perfect as some of the stuff I've seen out there although I'm trying to follow the rules from the manual as much as possible.

General / Re: PS to Cinema 4D Workflow
« on: October 13, 2015, 09:37:14 AM »
I figured out the problem with OBJs and UV maps from C4D: when exporting the option "Export objects as groups" has to be checked in order to the UV maps to be stored correctly(otherwise they are all messed up for whatever reason. The other thing and I guess this is specific to C4D, the entire UV map has to be shifted up by 1(transform -1 in the V direction) in order for PS to actually see it. I have no idea why, but when I import OBJs from PS to C4D I noticed that the maps are shifted so I did the same before exporting from C4D and everything works fine now.

With FBX and 3DS files, every time I try to reimport into PS, the meshes don't show up in the same place and that's another thing I can't understand but at least OBJs are working now.

General / Re: PS to Cinema 4D Workflow
« on: October 12, 2015, 05:16:01 PM »
I'll try that again however the first issue I faced when using FBX was that the coordinate system gets messed up when I export from PS to when I reimport the model it's not in the same place and therefore I cannot generate the texture in PS...I didn't play with FBX a lot though so I'll try again.

Thanks for advise

General / Re: PS to Cinema 4D Workflow
« on: October 12, 2015, 04:45:26 PM »
I've exhausted all my knowledge trying to figure this out but I have no idea why it doesn't work...once the OBJ is exported from PS I can't understand why the UVs get messed up or how to restore them. Any body out there using C4D with PS?? Please help!

General / PS to Cinema 4D Workflow
« on: October 11, 2015, 11:33:53 PM »
Hello All,
Having a bit of trouble figuring out the proper way to export OBJs from C4D after mesh cleanup/UV mapping so they are correctly seen by PS(standard edition).

 I'm basically generating a mesh in PS and exporting it as an OBJ. I bring the OBJ into C4D, cleanup the mesh, create UV mapping and export it back to OBJ. When I import the model in PS, it shows up in the same place but when I try to generate the texture using the "keep uv" mapping mode all I get is a black texture. The UVs seem to not be there coming in from C4D for some reason. I noticed also that when exporting a UV mapped model from PS to C4D, the UVs are shifted -1 in the V direction for some reason.

Ihab Ali

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