driemworks / driemworks-ar

A marklerless augmented reality platform for Android powered by OpenCV.

Driemworks

Driemworks is an open source augmented reality platform powered by OpenCV and OpenGL.

Motivation

Example (keypoint detection and tracking: see OpenARActivity.java)

Built with

• java
• gradle
• openCV
• openGL

OpenCV Support

OpenCV support is supplied by the OpenCVFragment. To use the OpenCVFragment in your activity, the activity must implement CameraBridgeViewBase.CvCameraViewListener2.

Example

public class MyActivity extends FragmentActivity implements CameraBridgeViewBase.CvCameraViewListener2 {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        ...
        FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
        // add opencv fragment
        transaction.add(new OpenCVFragment(), "OpenCVFragment");
        transaction.commit();
        ...
    }

	@Override
    public Mat onCameraFrame(CameraBridgeViewBase.CvCameraViewFrame inputFrame) {
		// your opencv logic here
	}
}

OpenGL Support

OpenGL support is supplied by the OpenGLFragment. To provide OpenGL and OpenCV support in an activity, the activity must implement CameraBridgeViewBase.CvCameraViewListener2 and extend AbstractARActivity.

For a renderer with an orientation provider, the renderer should extend AbstractOrientationRenderer

Example

public class MyActivity extends AbstractARActivity implements CameraBridgeViewBase.CvCameraViewListener2 {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        setRenderer(new CubeRenderer());
        setContentView(R.layout.opengl_opencv_layout);
        setGlSurfaceViewId(R.id.opengl_surface_view);
        setOpenCVSurfaceViewId(R.id.opencv_surface_view);
        ...
        FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
        // add opengl fragment
        transaction.add(new OpenGLFragment(), "OpenGLGFragment");
        // add opencv fragment
        transaction.add(new OpenCVFragment(), "OpenCVFragment");
        transaction.commit();
        ...
    }

	@Override
    public Mat onCameraFrame(CameraBridgeViewBase.CvCameraViewFrame inputFrame) {
		// your opencv logic here
	}
}

Prerequisites

Follow the guide (https://opencv.org/platforms/android/) on getting started with OpenCV4Androicd