[ARToolKit] observed screen coordinates to a line projected into the marker space?

I'd like to take a screen pixel position and create a line that starts at
the camera origin and passes through that position in the same coordinate
system an observed marker would have, and with camera parameters corrected
for.  I would end up with a line defined by two points- one point is 0,0,0
for the camera origin and another is floating in space at an arbitrary
distance but points in the correct direction.

Do I use arParamObserv2Ideal(), and use something else from the param object
also?

This video shows more of what I'm trying to do (using a naive/manually
calibrated approach for generating a line), the coordinates of a laser dot
are found and then the intersection of a line through that dot and a line
defined by the fiducial is found to create a depth map:
http://vimeo.com/1897078

Thanks,

-Lucas
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From:	Lucas <wsacul@g ........>	Received:	Oct 7, 2008
To	artoolkit@l .................
Subject:	[ARToolKit] observed screen coordinates to a line projected into the marker space?
I'd like to take a screen pixel position and create a line that starts at the camera origin and passes through that position in the same coordinate system an observed marker would have, and with camera parameters corrected for. I would end up with a line defined by two points- one point is 0,0,0 for the camera origin and another is floating in space at an arbitrary distance but points in the correct direction. Do I use arParamObserv2Ideal(), and use something else from the param object also? This video shows more of what I'm trying to do (using a naive/manually calibrated approach for generating a line), the coordinates of a laser dot are found and then the intersection of a line through that dot and a line defined by the fiducial is found to create a depth map: http://vimeo.com/1897078 Thanks, -Lucas -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.hitlabnz.org/pipermail/artoolkit/attachments/20081007/d53e8838/attachment.html _______________________________________________ ARToolKit mailing list ARToolKit@l ................. http://lists.hitlabnz.org/mailman/listinfo.cgi/artoolkit