C OLLABORATIVE A NNOTATION OF R EAL T IME S TREAMS ON A NDROID - E NABLED D EVICES Tao Huang Geoffrey C. Fox Indiana University Bloomington {taohuang,

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Presentation transcript:

C OLLABORATIVE A NNOTATION OF R EAL T IME S TREAMS ON A NDROID - E NABLED D EVICES Tao Huang Geoffrey C. Fox Indiana University Bloomington {taohuang,

O UTLINE Introduction Collaborative Annotation Framework on Real Time Streams Collaboration Research On Mobile System Architecture & Design Experiments & Conclusions

I NTRODUCTION Collaboration Systems Traditional Online Trends Everything goes mobile Everything stores in Cloud Mobile Extension of Collaborative Annotation Framework on Real Time Streams (introduced on CTS 2009)

C OLLABORATIVE A NNOTATION F RAMEWORK ON R EAL T IME S TREAMS Distributed annotation clients over the NaradaBrokering Network. Session management with two recovery strategies Distributed stream archiving and replaying Easy to add support to handheld and streaming clients

C OLLABORATION R ESEARCH O N M OBILE Popular topics Image/Text Based Location Recognition Digital Content/Place Annotation Tag/Scene Based Recommendation Problems Thin client Limited Collaboration Limited Interaction on Content Data

W HY ANDROID ? FeaturesiOSWindows Phone Android Multimedia Support ✔✔✔ Tablet Support ✔ End of 2012 ✔ Easy Deployment and Debugging ✔✔ Java Support ✔ Open Source ✔

A NDROID H ISTORY Time Period Major VersionsFlagship Device Major updates 09/08-09/09 1.X, Cupcake, Donut N/A 10/09-NowÉclair, Froyo, Gingerbread Camera Improvement, Multitouch, Flash support, NFC, etc 02/11-NowHoneyComb 3.x Tablet support, UI redesign, Multi Core support 10/11-NowIce Cream Sandwich 4.0.x Hardware Acceleration, etc

T ECHNOLOGY PREREQUISITES FeaturesCollaborative Annotation Framework Android Platform User interfaceSWT, AWTAndroid UI framework Audiovisual Capturing JMF basedAndroid Multimedia Framework Image Processing SWT, AWTAndroid canvas and OpenGL ES 1.0/2.0 Data Transmitting, Streaming NaradaBrokering RabbitMQ Simple RTSP based video streaming Data StorageRaw data file, XML Based metadata SQLLite, raw file and xml file

Difference between Desktop and Mobile Clients Extra layer of event translation: Stream Proxies S YSTEM A RCHITECTURE & D ESIGN

S ESSION C ONTROL AND M ANAGEMENT Batch Session Updates Ignore heartbeat events

M ULTIMEDIA P ROXY FOR ANDROID

E XPERIMENTS Computing Resource Usage Test

E XPERIMENTS - CONT Latency Tests in Different Networks

S UMMARY Conclusion Support sync/a-sync collaboration between desktop and mobile clients Satisfying performance and user experience on android-based mobile devices (wireless only) Future Work Stability Improvement and More sophisticated user cases Support on different mobile platforms

Q UESTIONS ? Thanks