Multiple Image overlay on camera feed

Hi,

I am new to android app development, and working on some kind of augmented reality app.

Requirement is user should be able to pick the image from the gallery and should overlay on top of camera feed.

can overlay more than one image. all the images should be able moveable, resizeable using two fingers and should capture the overlay images along with the camera feed too.

Can some one help me with an example containing code and respective layouts.

thanks in advance