Hello,
I understand your requirement. Let us help you to do this project as we have already done this type of augment Reality project in unity using Vuforia and in Android JNI using Opencv Library. Following is our experience:
We have 2 years experience in the software Domain. We have contributed in number of projects which involves Android, Unity,Java, C, C#, C++, Python, openCV, Vuforia, Augmented Reality, PHP, Machine learning,TensorFlow and other Web-Development languages.