Frame Rate Control Buffer Management Technique for High-Quality Real-Time Video Conferencing System

Kim, SangHyong; Won, Yoojae

doi:10.1007/978-981-10-7605-3_124

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…The goal is to maximize the total profit of the remaining frames [35]. According to the application scenarios, different types of frames may have different profits [36], [37], [38], [39], [40]. However, in the visual SLAM scenario, the profit is not a constant value for each frame but is rather a correlation among its neighbors.…”

Section: Buffering Methods In Other Applicationsmentioning

confidence: 99%

ORBBuf: A Robust Buffering Method for Remote Visual SLAM

Wang,

Zou,

Wang

et al. 2020

Preprint

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Collaborative simultaneous localization and mapping (SLAM) approaches provide a solution for autonomous robots based on embedded devices. On the other hand, visual SLAM systems rely on correlations between visual frames. As a result, the loss of visual frames from an unreliable wireless network can easily damage the results of collaborative visual SLAM systems. From our experiment, a loss of less than 1 second of data can lead to the failure of visual SLAM algorithms. We present a novel buffering method, ORBBuf, to reduce the impact of data loss on collaborative visual SLAM systems. We model the buffering problem into an optimization problem. We use an efficient greedy-like algorithm, and our buffering method drops the frame that results in the least loss to the quality of the SLAM results. We implement our ORBBuf method on ROS, a widely used middleware framework. Through an extensive evaluation on real-world scenarios and tens of gigabytes of datasets, we demonstrate that our ORBBuf method can be applied to different algorithms, different sensor data (both monocular images and stereo images), different scenes (both indoor and outdoor), and different network environments (both WiFi networks and 4G networks). Experimental results show that the network interruptions indeed affect the SLAM results, and our ORBBuf method can reduce the RMSE up to 50 times.

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Section: Buffering Methods In Other Applicationsmentioning

confidence: 99%

ORBBuf: A Robust Buffering Method for Remote Visual SLAM

Wang,

Zou,

Wang

et al. 2020

Preprint

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show abstract

“…A novel QoE-aware video transmission optimization algorithm is proposed in [38] by jointly controlling the transmission rate and playback buffer management to reduce the probability of video playback interruptions and adapt to a constantly changing network status effectively. Kim and Won [39] suggest a frame rate control buffer management technique with respect to buffering delay. Buffer underflow and overflow can be effectively prevented by their technique.…”

Section: Buffer-driven Rate Control For Video Codecmentioning

confidence: 99%

Buffer-Driven Rate Control and Packet Distribution for Real-Time Videos in Heterogeneous Wireless Networks

et al. 2019

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Video transmission bandwidth can be substantially increased by concurrent transmission through multiple radio interfaces introduced by heterogeneous wireless networks. However, delivering high-quality real-time videos with stringent end-to-end delay constraints is still challenging due to the time-varying multipath channel status. Thus, to integrate available multipath bandwidth and guarantee low end-to-end delay, this paper investigates a real-time concurrent multipath video transmission scheme in heterogeneous access networks. First, we present a multipath buffer analysis model (MBAM) to derive the lower and upper bounds of the target video frame bits. Second, given the low-latency and received video quality smoothness, we propose a buffer-driven rate control and packet distribution (BRCPD) algorithm aided by frame-level rate control and multipath transmission buffer awareness based on MBAM. Finally, we implement the proposed application-layer solution BRCPD algorithm in a real-world testbed. The experiment results verify that different from existing multipath video transmission schemes, the proposed algorithm is able to leverage the MBAM-based frame-level rate control to guarantee the target low end-toend delay. In particular, the BRCPD algorithm is able to guarantee an overdue loss rate of less than 5% under strictly limited delay constraints (250 ms) in the real-world testbed. INDEX TERMS Heterogeneous wireless networks, concurrent multipath transmission (CMT), rate control, packet distribution, buffer awareness, low-latency.

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AFR: An Efficient Buffering Algorithm for Cloud Robotic Systems

Wang

Zou

et al. 2022

2022 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)

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Frame Rate Control Buffer Management Technique for High-Quality Real-Time Video Conferencing System

Cited by 4 publications

References 7 publications

ORBBuf: A Robust Buffering Method for Remote Visual SLAM

ORBBuf: A Robust Buffering Method for Remote Visual SLAM

Buffer-Driven Rate Control and Packet Distribution for Real-Time Videos in Heterogeneous Wireless Networks

AFR: An Efficient Buffering Algorithm for Cloud Robotic Systems

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