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Re: hands-on object VR

Hi Patrick,

thanks for the hints.

Patrick Cheatham wrote:
That is, keep your camera stationary; photograph your object upright like your example. Then lay it on its side and photograph it; then rotate the (second set of) photographs themselves to give you the top/bottom orientation.

I'm not sure I fully understand. You mean I should just shoot like two circumferences perpendicular to each other, one horizontal and one vertical? Is this sort of Object VR possible? My little understanding of Pano2QTVR is that I can only do row by row, but I might be mistaken.

Anyway I'll have to rotate the lights as well, which I am afraid will be more difficult. I don't know how much precision is required in the lighting rotation before human eye perceives that the image has been tricked?


If you need to do a true, full multi-row object -- then one of the rigs available will help you as far as camera positioning along the vertical axis. I don't have any hands on experience with them. I've been a little more DIY with my object projects (head-on rather than hands-on :-P).

yeah, my ambition is true, full multi-row object. I've been all DIY so far. I produced only a single row object, but I made calculations for camera positions along the vertical axis (and realized there would be also a shadow problem if I don't pay attention how I put the lights), and it would work for the top 90°. But if I want to go below the turntable to -90°, I have a problem. Which of course I could try to solve by turning the object upside down, with the obvious problems of centering it properly and of the light/shadows. My turntable is not transparent, so I wont be able to simulate the light from above :(


Of course, and as you're aware I'm sure, your tradeoff in time spent will only put that time somewhere else. Like in the lighting. :) At least much of the post=production can be automated.

Yes, I am positive about my post-production. It's the shooting that still requires some thinking and fiddling.

thanks
Yuv
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