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Traditional dehazing techniques, as a well-studied topic in image processing, are now widely used to eliminate the haze effects from individual images. However, even the state-of-the-art dehazing algorithms may not provide sufficient support to video analytics, as a crucial pre-processing step for video-based decision making systems (e.g., robot navigation), due to the limitations of these algorithms...
The performance of most embedded systems is critically dependent on the average memory access latency. Improving the cache hit rate can have significant positive impact on the performance of an application. Modern embedded processors often feature cache locking mechanisms that allow memory blocks to be locked in the cache under software control. Cache locking was primarily designed to offer timing...
Cache locking improves timing predictability at the cost of performance. We explore a novel approach that opportunistically employs both cache analysis and locking to enhance schedulability in preemptive multi-tasking real-time systems. The cache is spatially shared among the tasks by statically locking a portion of the cache per task. To overcome the issue of limited cache space per task, we keep...
This paper presents a real-time three-dimensional (3D) wideband sound localization system designed with a miniature XYZO microphone array. Unlike the conventional microphone arrays for sound localization using only omnidirectional microphones, the presented microphone array is designed with both bidirectional (pressure gradient) and omnidirectional microphones. Therefore, the array has significantly...
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