augmented reality - How to recognize the slightly 3D object -

i making ar application. recognize 3d object , (the buttons beside on handle)

it looks both flat 2d image or 3d image .... howevere light or shadow disturbs recognize ....

then think solution.

do thinkg 3d scanner , object recognition helpfull it? or 2d normal recognize ,if there way recoginize (such using many pattern of pictures depending on light)??

standard image recognition algorithms work best when used textured images image contrast. scenario describing require specific algorithms tailored special situation. opencv has couple of algorithms might in use case (feature detection, feature descriptors).