Author Topic: measure drawing?  (Read 7096 times)


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measure drawing?
« on: August 20, 2013, 08:22:25 AM »
Hello, i have just purchased photoscan standard edition, so i am quite new to the program. I followed some basic tutorials and i have a question.

Working as an architect it would great if i could use photoscan to help me to my architectural measure drawings. The thing that i want is after i take the 3d model from photoscan to put it in a program (for ex autocad) and take some measurments on it and after that to create some sections etc.
Is that possible?

Thank you

Alexey Pasumansky

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Re: measure drawing?
« Reply #1 on: August 20, 2013, 05:01:01 PM »
Hello yusaku,

Standard edition doesn't have any scaling instruments, so you need some control points on the model to be able to specify the models dimensions in the external application.
Best regards,
Alexey Pasumansky,
Agisoft LLC

David Cockey

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Re: measure drawing?
« Reply #2 on: August 20, 2013, 09:40:07 PM »
When photographing a building for Photoscan identify several features which should be easy to identify after a mesh is created and textured. Measure and record the distances between these features. Process the images in Photoscan and obtain a mesh with texture. Export that mesh (I use .obj) and import it into AutoCAD, etc. Once in AutoCAD align the mesh as desired. Then select two of the features on the mesh which you previously identified and measured the distance between on the actual building. If you have several sets of features to select between use the ones which are largest distance apart which can be clearly identified on the building and which are the longest distance apart. The mesh can then be scaled so that the distance between the features in AutoCAD matches the actual distance. The scale ratio is (Distance on building) / (Distance on mesh as imported).


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Re: measure drawing?
« Reply #3 on: August 21, 2013, 06:12:30 AM »
I had the same question regarding scaling in PhotoScan Standard.  Any other suggestions for software that I can use to scale and measure a 3d model, and create a cross-section to show a depth profile?

Also, in Photoscan Pro, is it possible to scale a model with only known distances between control points (i.e., no georeferenced control points)? Also, is it possible to create a cross-section of the model?

thanks for the help.