I'm wondering if it is possible to add/overlay a scale bar(s) onto mosaics?

For my specific application I'm creating a true vertical projection/aerial photography (camera is fixed pointing downwards but translates horizontally) mosaic from a ROV (Remotely Operated Vehicle).

My thoughts are that there will be local non-linear distortions due to variation in ground elevation.  The resulting parallax error creates multiple perspectives which must be reconciled during the blending process, which inevitably produces a photomosaic that is an artificial and compromised view of reality.  Thus, it would be impossible to have any sort of reliable scale bar(s) in the mosaic.

I see two possible methods of skirting around this issue but have no clue on how to proceed.

1)  Overlay a scale bar into every singe image then create a mosaic.  I would need to figure out how NOT to blend this into the mosaic.

2)  *I found this on*
www.plantecology.ethz.ch/spotlights/her … kGuide.pdf

Link is not working so I have provided the Google search (it's the first one on the list)

http://www.google.ca/#hl=en&tbo=d&a … mp;bih=894

I wasn't sure if the author meant measuring 10x for each individual image.  I have large Panoramas to measure (>80 images) so this would be a very time consuming method.

Last edited by APG-Unit (2013-01-22 00:37:58)