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| + | ~~NOCACHE~~ | ||
| + | ~~NOTOC~~ | ||
| + | ====== CAMRIT ====== | ||
| + | ===== Control-based Adaptive Middleware for Real-Time Image Transmission ===== | ||
| + | {{:camrit.jpg |}} | ||
| + | Real-time image transmission is crucial to an emerging class of distributed embedded systems operating in open network environments. Examples include avionics mission re-planning over Link-16, security systems based on wireless camera networks, and online collaboration using camera phones. Meeting image transmission deadlines is a key challenge in such systems due to unpredictable network conditions. In this paper, we present CAMRIT, a Controlbased Adaptive Middleware framework for Real-time Image Transmission in distributed real-time embedded systems. CAMRIT features a distributed feedback control loop that meets image transmission deadlines by dynamically adjusting the quality of image tiles. We derive an analytic model that captures the dynamics of a distributed middleware architecture. A control theoretic methodology is applied to systematically design a control algorithm with analytic assurance of system stability and performance, despite uncertainties in network bandwidth. Experimental results demonstrate that CAMRIT can provide robust real-time guarantees for a representative application scenario. | ||
| + | |||
| + | ==== Related Papers ==== | ||
| + | Xiaorui Wang, Huang-Ming Huang, Venkita Subramonian, Chenyang Lu, and Christopher Gill, "[[http://www.ece.utk.edu/~xwang/papers/rtas04_camrit.pdf|CAMRIT: Control-based Adaptive Middleware for Real-time Image Transmission]]," IEEE Real-Time and Embedded Technology and Applications Symposium (RTAS 2004) Toronto, Canada, May 2004. | ||
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| + | ==== Download ==== | ||
| + | CAMRIT is open-source software. You are welcome to download the current release of CAMRIT 1.0: | ||
| + | |||
| + | * Source code: [[http://www.ece.utk.edu/~xwang/RTES/CAMRIT/CAMRIT.tar.gz|CAMRIT 1.0]] | ||
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| + | To install CAMRIT, you need to | ||
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| + | * [[http://www.cs.wustl.edu/~schmidt/ACE.html|Install and build ACE/TAO]] | ||
| + | * [[http://www.ece.utk.edu/~xwang/RTES/CAMRIT/README.pdf|Install and build CAMRIT]] | ||
| + | ==== Contact ==== | ||
| + | For more information, please email [[people:#dr._wang|Prof. Xiaorui Wang]]. This project is a collaborated work with Prof. Chenyang Lu and Prof. Christopher Gill at Washington University in St. Louis. | ||
| + | |||
