Douglas_Gann

Douglas Gann, a preservation archaeologist and vizualisation specialist at the Center for Desert Archaeology


Las Capas Area F
Las Capas Area F
eah (Over 1 year ago)
amazing this was done with only 233 shots (i bet that actually helps here) beautiful!

synthfeatured (Over 1 year ago)
Congratulations! We chose this synth to be featured on the front page of the site on September 11th, 2009. It will stay featured for part of the week.

David-Photosynth-Team (Over 1 year ago)
Thanks Douglas and thanks for your email too. I'm going to read the paper you sent me. Cheers, David.

Douglas_Gann (Over 1 year ago)
Hey David. You bet. I;ve added some highlights to try and help make sense of what you are seeing. This is "archaeologists archaeology," digging not so much for artifacts but incredibly subtle changes in soil color and texture. A good overview of this project was written up by the Los Angeles Times, see http://www.cdarc.org/page/kpd0. (But ignore the embarrassing sour grapes at the end, we are going to be able to say a great deal about these people once excavation and analysis is completed). A local story gives more info at http://www.cdarc.org/page/5339. Finally, highlights from our own publication are available here: http://www.cdarc.org/page/5339, and a Native American perspective on this research is available as well at http://www.cdarc.org/pdf/09-01_enote.pdf. Cheers, and thanks for giving us such a cool tool!

David-Photosynth-Team (Over 1 year ago)
Doug -- could you please give us a link to the best general introduction to this research, and add a few highlights showing those canal cross sections? Very interested in understanding what you're learning with this dig. Thank you!

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Casa Grande National Monument
Casa Grande National Monument
douglas (Over 1 year ago)
These are fascinating, it's amazing these structures have lasted so long (http://en.wikipedia.org/wiki/Casa_Grande_National_Monument) If you get chance please geotag the synth so that it shows up on the map. Thanks for sharing. Mark.

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Homol'ovi IV Mk II
Homol'ovi IV Mk II
PGRic (Over 1 year ago)
Douglas, I’ve just spent 45 mins wandering around your synths - truly wonderful experience. In addition to Tony’s info, you could try the camera on continuous shoot walking around slowly. This seemed to work for me on this extensively carved outcrop: http://photosynth.net/view.aspx?cid=ebd36c16-1e7a-467c-8ff2-d6b99f14e4c8 . You’ll probably only need every 3rd or 4th image to stitch/synth correctly (depending on camera and write speed) Look forward to seeing more of your synths. Rich

TonyErnst (Over 1 year ago)
Oh, and have you discovered our new highlights feature? Check it out.

TonyErnst (Over 1 year ago)
Dounglas, We here at photosynth love what you're doing to document these archaeological sites. I would suggest that you start with wide angle establishing shots. Stand in one place and shoot a 360, taking a photo about every 10 degrees. Then, for the petroglyphs, and other things you want to preserve detail on take a "medium" shot the foucus on just that particular rock face (or whatever). Then get in close for detail shots (how cool would it be to have a detail shot for each individual petroglyph?). Now move 15-20 feet in another direction and do the same thing. Keep doing this until you've completed a circuit of the area. Make sense? Feel free to contact me if it doesn't. Also, you might try shooting closer to sunrise or sunset, the less direct light will bring out more detail, of course this won't work if half of everything you want to document will be in shadow. Anyway, great synth. Keep them coming! Tony

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Casa Malpais
Casa Malpais
Douglas_Gann (Over 1 year ago)
Hey, thanks for the tip, blaise!

blaise (Over 1 year ago)
Getting the air and ground to connect is hard (as yet) without intermediate angles. There's also a big resolution difference, and I think many of the fine features change somewhat (looks like these were taken at different times?). The best air-ground merges I've seen on the site are from photographers using aerostats, which take shots on the way up to get strong connections along the way (search for 'aerostat', curtw has done some fun stuff).

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