location-based and Markerless Augmented Reality

Hello , Im kinda new to AR , i begin to study it and i did only AR with a marker , i like to do a markerless now i mean without the need to add a marker , is it possible ? if so what sdk should i use ? if there is a tutorial? please guys share it , it will save my life im so disperate

I searched and i found Metaio but it no longer exist ,i tried project Tango sdk for AR , is this a Markerless one ?https://developers.google.com/tango/apis/unity/unity-simple-ar

Thanks

 

Are you talking about something to give you position in 3d space or just rotation? I'm also looking for position in 3d space but the way Tango does it requires a camera + your phone's gyros from what I can tell:

https://developers.google.com/tango/overview/motion-tracking

If you have an android from what I can tell you may be able to use the above. I am looking for a way to do so that would work for iPhone as well, not sure if Tango does that but I wanted to try. My post is here:

http://forum.unity3d.com/threads/tr...-mobile-similar-to-project-tangos-sdk.416779/

 

I think there are many of markless sdks but SOME ar shuld buy. I also searching good markless ar sdk. If you found tell me too.