Touchscreen progress 8
I finished coating a large piece of paper with plasti-dip last night and this morning I tried it out on my screen. I posted a short but rather large video here (hi-res). The big bright spot is actually caused by the projector and the other glare might be from an open window next to it. I will need to experiment to see how to remove the projector glare spot. Maybe a diffuser or a more Matte coat on the bottom of the screen would help. Overall though I am pretty pleased. The finger spots are bright and it works well enough as a projection surface too. It didn't come out quite as transparent as my first test did, but that's probably because I used better quality paper. Now that I have this done, I can seriously work on a configuration application and try to get the projected image synced up with the detected finger presses.
5 Comments:
i don't know if your projector is emitting ir-light because of the lamp's lightspectrum but i found out that after taking 3 layers of developed film my webcam filteres out *all* of the normal spectrum :)
on another note: would you be so kind to write a few notes on the setup of your visual studio c++, because i'am getting compile errors with missing includes :(
though i haven't installed the platform sdk, yet.
Hi Marc,
Yeah, I am using the film trick with my webcam to make a simple IR cutoff filter. To go the other way is a little more difficult (pass regular light but filter IR). You can buy an IR blocking filter from an optics place for 50-100$ though. I may buy one eventually but for now I'm trying to avoid it.
Oh and for VC, you'll need OpenCV - do a google search. That should be the only other dependency. Get that and let me know if anything else is missing.
thanks for your help so far. i installed the platform sdk (for window.h and afx.h) and opencv but when i try to compile it i get linkage errors. maybe i should just stay in my with actionscript or wait until you're satisfied with it and release a binary - probably with osc-support ;)
up to you - I would like to support OSC, but to develop applications using the screen you may need to be able to link in the library. I know futnuh plans to work on a python wrapper though.
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