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Latency (engineering)

About: Latency (engineering) is a research topic. Over the lifetime, 3729 publications have been published within this topic receiving 39210 citations. The topic is also known as: lag.


Papers
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Book ChapterDOI
05 Nov 2012
TL;DR: A close-to-sensor low latency visual processing system that shows that by adaptively sampling visual information, low level tracking can be achieved at high temporal frequencies with no increase in bandwidth and using very little memory.
Abstract: In this paper we describe a close-to-sensor low latency visual processing system. We show that by adaptively sampling visual information, low level tracking can be achieved at high temporal frequencies with no increase in bandwidth and using very little memory. By having close-to-sensor processing, image regions can be captured and processed at millisecond sub-frame rates. If spatiotemporal regions have little useful information in them they can be discarded without further processing. Spatiotemporal regions that contain 'interesting' changes are further processed to determine what the interesting changes are. Close-to-sensor processing enables low latency programming of the image sensor such that interesting parts of a scene are sampled more often than less interesting parts. Using a small set of low level rules to define what is interesting, early visual processing proceeds autonomously. We demonstrate system performance with two applications. Firstly, to test the absolute performance of the system, we show low level visual tracking at millisecond rates and secondly a more general recursive Baysian tracker.

17 citations

Journal ArticleDOI
TL;DR: A hardware image rectification engine, which supports the processing of stereo high-definition serial digital interfaces video streams with up to 1080p30 video with a latency below 1 ms.
Abstract: The emerging market of digital 3-D film productions in HD resolution leads to the need for high-quality equipment in the production chain The incoming video streams of the two cameras require an image rectification due to unavoidable misalignments within the stereoscopic camera setup This rectification can either take place in postprocessing of the recorded material or it can be applied in real time during the shooting Especially in the case of streaming and recording of live events, real-time processing is necessary and, additionally, the system has to provide a very low latency We present a hardware image rectification engine, which supports the processing of stereo high-definition serial digital interfaces video streams with up to 1080p30 video with a latency below 1 ms The image rectification engines for the two channels are implemented on two Altera Stratix III EP3SL340 running at 7425 MHz They can be controlled by the stereoscopy analysis software, which calculates the parameters required for the image rectification at runtime

17 citations

Proceedings ArticleDOI
06 Mar 2017
TL;DR: A novel task mapping approach for HWNoC is introduced in order to first balance the usage of wireless links by avoiding congestion over wireless routers and second spread temperature across the whole chip by utilizing dark silicon.
Abstract: Hybrid Wireless Network-on-Chip (HWNoC) provides high bandwidth, low latency and flexible topology configurations, making this emerging technology a scalable communication fabric for future Many-Core System-on-Chips (MCSoCs). On the other hand, dark silicon is dominating the chip footage of upcoming MCSoCs since Dennard scaling fails due to the voltage scaling problem that results in higher power densities. Moreover, congestion avoidance and hot-spot prevention are two important challenges of HWNoC-based MCSoCs in dark silicon age, Therefore, in this paper, a novel task mapping approach for HWNoC is introduced in order to first balance the usage of wireless links by avoiding congestion over wireless routers and second spread temperature across the whole chip by utilizing dark silicon. Simulation results show significant improvement in both congestion and temperature control of the system, compared to state-of-the-art works.

17 citations

Proceedings ArticleDOI
15 Apr 2019
TL;DR: The design and the implementation of a highly accurate and low latency asymmetric double-sided two-way ranging algorithm that runs at very modest energy budget on low-power tags based on ARM Cortex-M4F microcontrollers (MCUs) are presented.
Abstract: Positioning based on Ultra-wideband (UWB) wireless communication promises multipath immunity, high resolution, and strong wall penetration. Hence, many academic and industrial researchers are proposing UWB positioning systems especially to track and locate objects and person in indoor environments. UWB indoor localization, based on stationary "anchors" tracking mobile "tags", is already a reality in many application scenarios. However, most of the available systems either perform tracking on servers which collect data from tags and anchors or delegate to the anchors to calculate the actual position of the tags. Both approaches imply long latency and limited throughput in terms of position fixes per unit time. In this paper, we present the design and the implementation of a highly accurate and low latency asymmetric double-sided two-way ranging algorithm that runs at very modest energy budget on low-power tags based on ARM Cortex-M4F microcontrollers (MCUs). We implemented a complete tag platform, which hosts the MCU and the UWB module, and we evaluated the algorithm in the field. Experimental results demonstrate high accuracy (4.3cm) and position fix rate (20Hz), the energy cost of only 4.9mJ for a single fix, and a cold-start first position fix in only 81ms.

17 citations

Journal ArticleDOI
TL;DR: A very high throughput low latency VLSI design architecture of CRC-32 with reconfigurable parameters, which lies in its ability to operate on the same clock cycle in which the code word is presented, with results produced in immediately next clock cycle.

17 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202210
2021692
2020481
2019389
2018366
2017227