Actually I make different try with OpenCV camera calibration, POSIT algorithm, and ARToolkit mostly and some other algorithm into openFrameworks (quite better and faster for try different cpp library than making ObjC port for each). I finally find the best result with POSIT algorithm, putting my 4 points then playing with the fov to have something who maps the best with my objects. But I'm quite sure we could be able to make something better with camera calibration or ARToolkit, but I probably makes something wrong at that time. Didn't look farer with that, the result I had with POSIT was enough for that part. I'll made the port in ObjC and QC next month or October, I'll try to release it if I have something enough usable and correct.
On Sat, Sep 11, 2010 at 9:42 AM, luca palmili <[email protected]> wrote: > Hi Thomas, > I didn't find a valid solution to the entire problem yet. Your suggestion > is right: there is a missing step in my work-flow, I don't calculate > intrinsic/extrinsic parameters of my projector/camera. I jump that passage > just because I didn't find a good way to do that: if I follow the OpenCV > O'Reilly book example, I can't evaluate correct parameters. :/ > > Are you doing something in the right direction? > > Best, > Luca > > > > Hi all, >> I'm working on quite the same things, didn't realize to any good result >> actually but on the good way I think. >> Luca, did you find one solution with the Posit algorithm? For me it missed >> one thing in your approach, is how do you determined the fov and intrinsec >> parameters of your projector/camera. Did I missed something in your >> approach? >> Stefan, what approach did you use to calibrate? I'm actually looking at >> opencv camera calibration algorithm, but have some difficulty to understand >> the approach, and how to adapt it from one multiple pattern on one plane >> calibration to a 4 non coplanar points calibration. >> Thanks for helps, >> Thomas. >> > -- Thomas Pachoud ingénieur multimédia IMAC www.creapach.fr
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