android - AR complex CAD model tracking -

i need 3d-cad model tracking.

i have develop android application tracks predefined cad models parts of car, e.g. stand in front of car engine hood opened , application should tell have (perhabs refill fluid) visual support arrows or cicles. following youtube video describes intention https://www.youtube.com/watch?v=4le_iocfnl0

i have tried metaio sdk when try transform cad models metaiocreator edge , surface models cannot recognize part of model. think because models detailed (~400.000 polygons each). in addition test purpose reduced polygons lower count (~7.000 polygons), when create edge , surface model load models in test application test device (samsung galaxy tab s) laggs extremly , not possible track model.

so ask if right way because don't think so.. perhaps give me advice tracking method should use of.

so far used metaiosdk hybrid 3d tracking witch mix edgebased , featurebased trackingmethod. there annother method witch better reach goal? i've read opencv (witch available android too) dont if method 3d cad tracking. has experience in kind of augmented reality?

i have following requirements: - framework / toolkit must running on android - tracking should independent changing light ratio - have track many different cad models (the user select 1 wich shoud tracked) - user selected cad model can more once in current viewport , every single must selectable further rendering operations - performance must when running on wearable device

in addition when there group of switches shall tracked, there possibility track when user pressed marked switch? when know exact relative position cad models there possibility join them together? intent user tracks model , selecting trackable device knows approximately position based on position model , relative position difference new model.

hope responses, lost1994

ps: if ambiguous or didn't explain cleary please don't afraid of asking.

i know answer maybe bit late, anyway: in general 3d-edge-based tracking choice here. using hybrid version if ar world wont change (means car stays on static position , wont moved). reason laggs still have 7000 polygons. that's mobile. reduce 3000 or less (3000 fine on iphone6).

note: metaio has closed doors (they have been bought apple).