9,440 research outputs found
Vision technology/algorithms for space robotics applications
The thrust of automation and robotics for space applications has been proposed for increased productivity, improved reliability, increased flexibility, higher safety, and for the performance of automating time-consuming tasks, increasing productivity/performance of crew-accomplished tasks, and performing tasks beyond the capability of the crew. This paper provides a review of efforts currently in progress in the area of robotic vision. Both systems and algorithms are discussed. The evolution of future vision/sensing is projected to include the fusion of multisensors ranging from microwave to optical with multimode capability to include position, attitude, recognition, and motion parameters. The key feature of the overall system design will be small size and weight, fast signal processing, robust algorithms, and accurate parameter determination. These aspects of vision/sensing are also discussed
Communication Beyond Transmitting Bits: Semantics-Guided Source and Channel Coding
Classical communication paradigms focus on accurately transmitting bits over
a noisy channel, and Shannon theory provides a fundamental theoretical limit on
the rate of reliable communications. In this approach, bits are treated
equally, and the communication system is oblivious to what meaning these bits
convey or how they would be used. Future communications towards intelligence
and conciseness will predictably play a dominant role, and the proliferation of
connected intelligent agents requires a radical rethinking of coded
transmission paradigm to support the new communication morphology on the
horizon. The recent concept of "semantic communications" offers a promising
research direction. Injecting semantic guidance into the coded transmission
design to achieve semantics-aware communications shows great potential for
further breakthrough in effectiveness and reliability. This article sheds light
on semantics-guided source and channel coding as a transmission paradigm of
semantic communications, which exploits both data semantics diversity and
wireless channel diversity together to boost the whole system performance. We
present the general system architecture and key techniques, and indicate some
open issues on this topic.Comment: IEEE Wireless Communications, text overlap with arXiv:2112.0309
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