Augmented Reality with large and complex markers

does anyone have any experience with using large and complex images as markers (e.g. magazine layout, photo, text-layout) for a.r.?

i am not sure which way to go:

flash, papervision and flar would be nice for distribution but i suspect them to be too bad in terms of performance for a more complex marker than the usual 9x9 or 12x12 blocks. i had difficulties achieving both a good 3d performance and a smooth and solid detection.

i can also do java or objective-c with opengl/opencv and this is definitely also an option for this project.

i just would like to 开发者_如何学Cknow before if anyone has had experiences in this field and could give me a few hints or warnings. i know it has been done already so there is a way to do it smoothly.

thanks, anton

It sounds like you might want to start investigating natural feature tracking libraries. In general the tracking is smoother and more robust than with markers, and any feature-full natural image can be used as the marker. The downside is, I'm not aware of any non-proprietary solutions.

Metaio Unifeye works in a web-browser via flash if I recall correctly, something like that might be what you're looking for.

You should look at MOPED. MOPED is a real-time Object Recognition and Pose Estimation system. It recognizes objects from point-based features (e.g. SIFT, SURF) and their geometric relationships extracted from rigid 3D models of objects.
See this video for a demonstration.