I am trying to mosaic images of the seabed taken by an underwater vehicle. I also have the gps position of the track and both video and gps are time stamped. I have worked with Stitch from ms but would like some software which considers the sequence of the images to match them up and the gps. Any suggestions welcome.
Hi Morten thanks for the suggestion. Currenlty I am still in the planning phase of our project but should have data within the next couple of weeks. I will be intouch and happy to pass you some example data.
Although it's not open source, Agisoft Photoscan seems perfect for what you're trying to accomplish. I believe they student/research copy of the software is provided at a significantly reduced cost (maybe $250)...
Further, I haven't worked with Photoscan in about a year, but according to one of the other grad students I work with, the software now has a new supported video input function, which automatically splices up videos into single frames, followed by being processed normally using the structure from motion (SfM) algorithms built within the software. You can also use the GPS-timestamp information to calibrate the final mosaics, digital surface models, etc.
There is much literature on underwater photogrammetric modeling, specifically coral beds. It seems SfM algorithms work surprisingly well with underwater features.
Leon, J. X., Roelfsema, C. M., Saunders, M. I., & Phinn, S. R. (2015). Measuring coral reef terrain roughness using ‘Structure-from-Motion’ close-range photogrammetry. Geomorphology, 242, 21-28.
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