问题
I'm searching a functional AR Markerless library for the iPhone (from 3GS and supporting iOS 4.3 at least).
I've already tested a large amount of SDKs including Qualcomm AR, Layar, ARToolkit, but none of them was satisfying my needs.
To be more precise, I need neither a localization-based AR technology (Layar), nor a marker technology (ARToolkit). If possible, the library has to be free, as I don't have much financial resources.
回答1:
Qualcomm ( QCAR ) has recently released an iOS version into beta. So if that's why it didn't meet your needs, it may now.
Also Junaio's Glue provides a simple 'markerless' solution - http://www.junaio.com/publisher/junaioglue
There are also free, and inexpensive, licenses for String - http://www.poweredbystring.com/ but String targets need to have a high contrast rectangular border.
Other SDKs by Total Immersion and Metaio are rather expensive - or they were the last time I'd checked.
If QCAR for iOS will work, that may be your best bet.
来源：https://stackoverflow.com/questions/6953365/markerless-ar-lib-for-iphone