Camera & Sensors in Windows Phone Application
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Session Code. Camera & Sensors in Windows Phone Application. Larry Lieberman Product Mgr , Windows Phone Developer Microsoft Corporation. Agenda. What sensors are available, and how do I use them? How do I access the camera to address various scenarios. - PowerPoint PPT Presentation
Transcript of Camera & Sensors in Windows Phone Application
Session Code
Camera & Sensors in Windows Phone Application
Larry LiebermanProduct Mgr, Windows Phone DeveloperMicrosoft Corporation
AgendaWhat sensors are available, and how do I use them?How do I access the camera to address various scenarios
New scenarios enabled in Windows Phone 7.5
Augmented realityBarcode scanning appsCustom camerasImage processing
What hardware sensors are supported?
Accelerometer
Compass
Gyro
New for 7.5
Motion sensor
Motion Sensor
[cos γ .cos α −cos β . sin α+sin β . sin γ .cosα sin β .sin α+cos β . sin γ .cos α
cos γ . sin α cos β .cos α+sin β . sin γ . sin α − sin β .cos α+cos β . sin γ .sin α
− sin γ sin β .cos γ cos β .sin γ ]All the sensors + a bunch of math!
Use this sensor whenever available
Why not always use motion sensor?Motion.IsSupported is false
Motion will work even without gyroscopeWhen you want data specific to the sensor reading
Accelerometer – acceleration (in g’s)Gyro –rotational velocity (rad/s)Compass – heading (degrees)
Advanced UsagesCustom motion algorithmsGestures?
Two Ways to Access the CameraPhotoCamera Class:
New ISV Managed API developed for WPSilverlight 4 WebCam API
Ported SL4 API with added functionality and perf
Scenarios Dictate Which Camera API Choice
Silverlight 4 WebCamReuse SL4 WebCam KnowledgeEasily Target Desktop and PhoneRecord Video and Audio into a File
PhotoCameraTake High Quality PhotosHandling Hardware ButtonHandling Flash mode and Focus
Camera “Good to Know”Output for Video recorded is MP4Always check for device specific support for Flash modeUse Y or YUV format for Processing Samples
Hardware Availability and Debugging
Not all phones will have same hardware configurationGyro and Compass optional (but if Gyro present, Compass present)Motion Sensor quality based on sensors present
Accelerometer, Gyro, and Compass - best qualityAccelerometer and Compass – good for AR scenarios(reduced quality without Gyro)
Physical hardware required for most debugging scenarios
Accelerometer can be debugged with emulator
Re-capGyro, compass, and motion sensor are coming
The new motion sensor class does all the hard math for youYou can still access raw sensor data if you need to
New camera API’s will enable cool new scenarios on the phone
Augmented RealityCustomer Photo Camera
Questions?
Summary Many of the most compelling mobile applications and games leverage sensors to create wildly interactive experiences
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