Camera & Sensors in Windows Phone Application

2. Session Code Camera & Sensors in Windows Phone Application Larry Lieberman Product Mgr, Windows Phone Developer Microsoft Corporation

3. Agenda • What sensors are available, and how do I use them? • How do I access the camera to address various scenarios

4. New scenarios enabled in Windows Phone 7.5 • Augmented reality • Barcode scanning apps • Custom cameras • Image processing

5. What hardware sensors are supported? • Accelerometer • Compass • Gyro New for 7.5

6. Motion sensor All the sensors + a bunch of math! Motion Sensor Use this sensor whenever available

7. Why not always use motion sensor? • Motion.IsSupported is false • Motion will work even without gyroscope • When you want data specific to the sensor reading • Accelerometer – acceleration (in g’s) • Gyro –rotational velocity (rad/s) • Compass – heading (degrees) • Advanced Usages • Custom motion algorithms • Gestures • ?

8. Two Ways to Access the Camera • PhotoCamera Class: • New ISV Managed API developed for WP • Silverlight 4 WebCam API • Ported SL4 API with added functionality and perf

9. Scenarios Dictate Which Camera API Choice

10. Camera “Good to Know” • Output for Video recorded is MP4 • Always check for device specific support for Flash mode • Use Y or YUV format for Processing Samples

11. Hardware Availability and Debugging • Not all phones will have same hardware configuration • Gyro and Compass optional (but if Gyro present, Compass present) • Motion Sensor quality based on sensors present • Accelerometer, Gyro, and Compass - best quality • Accelerometer and Compass – good for AR scenarios(reduced quality without Gyro) • Physical hardware required for most debugging scenarios • Accelerometer can be debugged with emulator

12. Re-cap • Gyro, compass, and motion sensor are coming • The new motion sensor class does all the hard math for you • You can still access raw sensor data if you need to • New camera API’s will enable cool new scenarios on the phone • Augmented Reality • Customer Photo Camera Questions?

13. Summary • Many of the most compelling mobile applications and games leverage sensors to create wildly interactive experiences

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