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General / Re: Making measurements of a 3D Photoscan model
« on: September 19, 2014, 02:01:08 PM »
Inside Photoscan: After the model has been georeferenced. Put markers at the ends of the line you want to measure (You can do it directly on the model and adjust precisely their position on each photo where the marker is back-projected). Select the two markers in the project tree and create a ruler object by right click.
Then you can read the measurement if you select view estimations in the ground control pane.
ISeeBees: If no geo-reference nor direct scale input has been done by rulers, you cannot trust any measurement from the model, not even if you know the focal lenght very well.
Outside Photoscan, you should be able to take measurements with most of CAD and GIS tools, but also with Adobe reader if you export 3dmodel as pdf. Try Meshlab too
Jose Martinez
GEOBIT
Then you can read the measurement if you select view estimations in the ground control pane.
ISeeBees: If no geo-reference nor direct scale input has been done by rulers, you cannot trust any measurement from the model, not even if you know the focal lenght very well.
Outside Photoscan, you should be able to take measurements with most of CAD and GIS tools, but also with Adobe reader if you export 3dmodel as pdf. Try Meshlab too
Jose Martinez
GEOBIT