I have a manual Volkswagen Golf VI with an Android Head Unit (Brand: Hikity, Model no.: SH3AM5Hi) and a rear camera (I don’t know the brand or model, but it displays the frames on the android head unit when I put the car in reverse gear). I’m currently a student and I was wondering if I can develop an android app as a faculty project that can be installed not only on my android head unit but also on other android head units with a reverse camera installed and it applies some transformations over the frames of the rear camera feed when the car is put in reverse (for example an Inverse Perspective Mapping to show the image as a topview image).
Is there an API in any programming language that can help me with accessing the frames and modifying them in any way? Is there a way I can set my app to launch when my car is put in reverse instead of the default feed that is shown on the screen, or any other way that does what I am asking for?
Any help is appreciated.

I don’t know how the camera is connected to the android head unit and how does it work but I know that the camera does not work like a normal camera on an android phone that I can launch and take photos.