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Author Topic: Specifying distance between two points.  (Read 101 times)

raehyuk

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Specifying distance between two points.
« on: May 14, 2019, 06:12:59 AM »
Hello

I am constructing 3D model of broken pottery pieces.
My goal is to put the broken pieces together to recover its original shape.
In order to do so, I need to make sure that all the 3D models have same scale as each other.
I guess photoscan ( I am using professional) has a function of specifying distance between two points in the photo
so the program can use it as a ground truth dimension.
Could you let me know I can I set ground truth distance between two points in cameras?

Alexey Pasumansky

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Re: Specifying distance between two points.
« Reply #1 on: May 14, 2019, 12:47:39 PM »
Hello raehyuk,

You can create the "scale bar" instance in Metashape between two marker instances or between two aligned cameras.

For markers you need to place at least two projections for each marker on the images from the aligned subset.

Some additional information regarding the scale bar utilization can be found in the following document:
https://www.agisoft.com/pdf/tips_and_tricks/CHI_Calibrated_Scale_Bar_Placement_and_Processing.pdf
Best regards,
Alexey Pasumansky,
AgiSoft LLC