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Author Topic: How orthophotos are generated in photoscan  (Read 3036 times)

Ingsayyad

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How orthophotos are generated in photoscan
« on: May 28, 2015, 12:13:29 PM »
Can some one explain me the way othophoto are  generated in Photoscan.
1- Are the generated on basic of dense cloud or mesh.
2- I have cleaned my dense cloud and mesh there is no tree in it. But after texturing mesh, projection of trees is there. my orthophoto also contains projection( texture) of trees. It means for generation of ortho images, the software is still using rgb of images and not from dense cloud.
 Should i click in single images and mask the area containing the trees or there is some trick?

Alexey Pasumansky

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Re: How orthophotos are generated in photoscan
« Reply #1 on: May 28, 2015, 12:18:49 PM »
Hello Ingsayyad,

Images are projected to the reconstructed mesh model according to their estimated internal and external orientation information.

Best regards,
Alexey Pasumansky,
Agisoft LLC

Ingsayyad

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Re: How orthophotos are generated in photoscan
« Reply #2 on: May 28, 2015, 12:31:52 PM »
Can I get the ortho-rectification of all  single image files from mesh also.

Alexey Pasumansky

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Re: How orthophotos are generated in photoscan
« Reply #3 on: May 28, 2015, 12:46:55 PM »
Hello Ingsayyad,

It is possible to export orthophoto based on the single image if you disable all but one photos in the active chunk before export operation.
If multiple images should be exported in this way, the task can be automated via Python scripts. There's a sample script in our Wiki pages:
http://wiki.agisoft.com/wiki/Export_Individual_Orthophotos.py
Best regards,
Alexey Pasumansky,
Agisoft LLC