Topic: Virtual 3D Objects

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PicoDeGalla (Over 1 year ago)
What if you want to create a panoramic that goes around an object looking in, instead of looking out.  So that the panoramic would appear to go around a 3 dimensional object instead of appear to just spin around in circles.  Would that be possible?  I would think you would need a blue screen and a very textured object sitting on a lazy Susan so that you could spin it while snapping photos to get all of the object, I have neither the blue screen nor handy Lazy Susan but I would love to see someone try.  Let me know if some one has done this because I would love to post an object on my school page so that my student could explore a rock, or bug or something virtually like.  I hope I don't have to take a million photos to fill the point cloud, ugh! Thank you.
grahamthorneymt (Over 1 year ago)
I've just been wondering about this.

Kind of like an inverse panorama?

I work at a museum and gallery and it would be great to walk around an object on a plinth and then make a panorama. Then put it on the website for people to 'virtually' walk around.
Nathanael (Over 1 year ago)
The straightforward answer to this is still a bit lengthy. Here goes. is host to both photosynths and panoramas. 
(The guys at Microsoft Research have also demoed 'Spin Movies' which is more similar to traditional 'inverse panoramas'/'object movies' which would make a third photographic format hosted on

A photosynth is fully capable of capturing an object from all angles. In fact the Photosynth Photography Guide (available here: ) includes directions for using a turntable. 
Takeaway: If you use a stationary camera and a turntable, you need to have a completely blank backdrop, so that Photosynth tracks the object of interest, rather than the background.

One early example of an object synth is Tan Nguyen's 'Doug'.
Direct3D: (Use Internet Explorer to view.)
Nathanael (Over 1 year ago)
Tan took more photos than is strictly necessary for an object synth and his photography is also relatively highly structured - reminiscent of what was necessary to achieve acceptable results with earlier tech like QuickTime VR's 'Objects'. Example:

What anyone will notice is that, because photosynths are general purpose (with scene structure being unpredictable), all imagery is loaded 'on demand'. Although you have automated image matching, no real resolution limits on images, ability to change distances from one's subject, etc. this means that for the simple purpose of having a spin movie/object movie experience, photosynths are not an ideal comparison to QTVR Objects because the illusion of turning a single object is broken when all images in an object movie/spin movie are not preloaded into RAM.