Augmented Reality Engine

Viewlity

About me

CristianAndreica4th Year student – Politehnica University of Bucharest

Co-founder of XTWIP.comCurrently involved in Balaur.ro

3 yrs experience in web industry1 yrs experience with building desktop apps

Proficiency with: Java, PHP, JS, Python, Unix

Email: cristian.andreica@gmail.comTwitter Account: @cristiandreica

Concept Development Problems Demo

TODOs

Augmented Reality

Concept

Plan

Price: 0.99 euro per app

Copies: 100 per app

Development time: 3-5 hours

Number of apps: as much as we can

Development

1. public class CameraPreviewextends SurfaceViewimplements SurfaceHolder.Callback {

2. private SurfaceHoldermHolder;3. private Camera mCamera;

…

4. public CameraPreview(Context context) { // context -> The application Activity objectsuper(context);

5. mHolder= getHolder();6. mHolder.addCallback(this);

}

7. public void surfaceCreated(SurfaceHolder holder) {8. mCamera= Camera.open();9. mCamera.setPreviewDisplay(holder);

}

10. public void surfaceDestroyed(SurfaceHolder holder){ … }11. public void surfaceChanged(SurfaceHolder holder, intformat, intw, inth) { … } }

Camera Activity

GPS location1. public class Controllerimplements LocationListener{2. private Criteria locationCriteria;3. private LocationManagerlocationManager;

public Controller(){locationCriteria= new Criteria();

4. locationCriteria.setAccuracy(Criteria.ACCURACY_COARSE);5. locationCriteria.setAltitudeRequired(false);6. locationCriteria.setBearingRequired(false);7. locationCriteria.setCostAllowed(true);8. locationCriteria.setPowerRequirement(Criteria.POWER_LOW);9. locationManager= (LocationManager) context

.getSystemService(Context.LOCATION_SERVICE);10. locationManager.requestLocationUpdates(bestProvider,

LOCATION_REFRESH_TIME, LOCATION_REFRESH_MIN_DISTANCE,this);

}

11. public void onLocationChanged(Location location){…} }

Orientation1. public class Controllerimplements SensorEventListener{2. private SensorManagersensorManager;

public Controller(){3. sensorManager= (SensorManager) context.getSystemService(Context.SENSOR_SERVICE);4. sensorManager.registerListener(this, 5. sensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION),

SensorManager.SENSOR_DELAY_UI);

}

6. public void onSensorChanged(SensorEventevt) {7. float vals[] = evt.values;

8. If (evt.sensor.getType() == Sensor.TYPE_ORIENTATION) {// do crazy stuff when orientation changes

}}

}

Issues

1. Compatibility- resolution- speed

2. Layout- [0,360] degrees- sensor noise problem

Concept Development Problems Demo

DONE

Thank you!