Abstract
Video cameras are increasingly used to provide real-time feedback in automatic control systems, such as autonomous driving and robotics systems. For such highly dynamic applications, the glass-to-glass (G2G) and glass-to-algorithm (G2A) latencies are critical. In this paper, we analyze the latencies in a point-to-point video transmission system and propose novel frame skipping and preemption approaches to reduce the G2G and G2A delays. We implement the proposed approaches in a prototype that shows significantly reduced G2G and G2A latencies as well as reduced transmission bitrate requirements compared with traditional video transmission schemes. In our low-delay video communication prototype, a VGA resolution video is transmitted with averageG2Gand G2A delays of 21.2 and 11.5 ms, respectively, with off-the-shelf hardware.
Original language | English (US) |
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Pages (from-to) | 238-252 |
Number of pages | 15 |
Journal | IEEE Transactions on Multimedia |
Volume | 20 |
Issue number | 1 |
DOIs | |
State | Published - Jan 2018 |
Keywords
- Delay analysis
- Delay measurement
- Frame skipping
- Preemption
- Prototype system
ASJC Scopus subject areas
- Signal Processing
- Media Technology
- Computer Science Applications
- Electrical and Electronic Engineering