Proceedings of the 14th Conference on ACM Multimedia Systems最新文献_第3页

A Holistic Approach to Understand HTTP Adaptive Streaming 理解HTTP自适应流的整体方法

Proceedings of the 14th Conference on ACM Multimedia Systems Pub Date : 2023-06-07 DOI: 10.1145/3587819.3593026

M. Vandersanden

引用次数: 0

RABBIT: Live Transcoding of V-PCC Point Cloud Streams RABBIT: V-PCC点云流的实时转码

Proceedings of the 14th Conference on ACM Multimedia Systems Pub Date : 2023-06-07 DOI: 10.1145/3587819.3590978

Michael Rudolph, Stefan Schneegass, Amr Rizk

{"title":"RABBIT: Live Transcoding of V-PCC Point Cloud Streams","authors":"Michael Rudolph, Stefan Schneegass, Amr Rizk","doi":"10.1145/3587819.3590978","DOIUrl":"https://doi.org/10.1145/3587819.3590978","url":null,"abstract":"Point clouds are a mature representation format for volumetric objects in 6 degrees-of-freedom multimedia streaming. To handle the massive size of point cloud data for visually satisfying immersive media, MPEG standardized Video-based Point Cloud Compression (V-PCC), leveraging existing video codecs to achieve high compression ratios. A major challenge of V-PCC is the high encoding latency, which results in fallback solutions that exchange the compression ratio for faster point cloud codecs. This encoding effort rises significantly in adaptive streaming systems, where heterogeneous user requirements translate into a set of quality representations of the media. In this paper, we show that given one high quality media representation we can achieve live transcoding of video-based compressed point clouds to serve heterogeneous user quality requirements in real time. This stands in contrast to the slow, baseline transcoding that reconstructs and re-encodes the raw point cloud at a new quality setting. To address the high latency when employing the decoder-encoder stack of V-PCC during transcoding, we propose RABBIT, a novel technique that only re-encodes the underlying video sub-streams. This eliminates the overhead of the baseline decoding-encoding approach and decreases the latency further by applying optimized video codecs. We perform extensive evaluation of RABBIT in combination with different video codecs, showing on-par quality with the baseline V-PCC transcoding. Using a hardware-accelerated video codec we demonstrate live transcoding performance of RABBIT and finally present a trade-off between rate, distortion and transcoding latency.","PeriodicalId":330983,"journal":{"name":"Proceedings of the 14th Conference on ACM Multimedia Systems","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130362133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Web3DP: A Crowdsourcing Platform for 3D Models Based on Web3 Infrastructure Web3DP:基于Web3基础架构的3D模型众包平台

Proceedings of the 14th Conference on ACM Multimedia Systems Pub Date : 2023-06-07 DOI: 10.1145/3587819.3592549

Lehao Lin, Haihan Duan, Wei Cai

引用次数: 1

Modeling Illumination Data with Flying Light Specks 用飞行光斑建模照明数据

Proceedings of the 14th Conference on ACM Multimedia Systems Pub Date : 2023-06-07 DOI: 10.1145/3587819.3592544

Hamed Alimohammadzadeh, Daryon Mehraban, Shahram Ghandeharizadeh

引用次数: 3

The Impact of Latency on Target Selection in First-Person Shooter Games 第一人称射击游戏中延迟对目标选择的影响

Proceedings of the 14th Conference on ACM Multimedia Systems Pub Date : 2023-06-07 DOI: 10.1145/3587819.3590977

Shengmei Liu, M. Claypool

引用次数: 0

SMART360: Simulating Motion prediction and Adaptive bitRate sTrategies for 360° video streaming SMART360: 360°视频流的模拟运动预测和自适应比特率策略

Proceedings of the 14th Conference on ACM Multimedia Systems Pub Date : 2023-06-07 DOI: 10.1145/3587819.3592547

Quentin Guimard, L. Sassatelli

引用次数: 1

Modified CUBIC Congestion Avoidance for Multi-side Parallel Downloading over Lossy Networks 有损网络上多方并行下载的改进立方拥塞避免

Proceedings of the 14th Conference on ACM Multimedia Systems Pub Date : 2023-06-07 DOI: 10.1145/3587819.3597029

Yu-Yen Chung

{"title":"Modified CUBIC Congestion Avoidance for Multi-side Parallel Downloading over Lossy Networks","authors":"Yu-Yen Chung","doi":"10.1145/3587819.3597029","DOIUrl":"https://doi.org/10.1145/3587819.3597029","url":null,"abstract":"With the rapid growth of online video viewing, the quality of experience for users become a critical factor in the video streaming service to attract users and increase their adherence. Multi-side parallel downloading, which requests video segments from various low-cost data nodes simultaneously, could be a strategy to reduce the latency and improve the experience. However, the communication between such data nodes might not be as reliable as a conventional dedicated server. In such a network, the random loss events may bias the loss-based congestion control. Accordingly, this work incorporates a reevaluation mechanism into the CUBIC congestion avoidance state to correct the underestimation of the congestion window. In the experiment, we analyzed the round-trip time pattern and the transmission speed of CUBIC against our modification via network simulation with various loss rates. Our result shows that reevaluation helps to recover the congestion window and to improve the transmission speed in the extremely high-loss network. The derived insight may benefit the future improvement of loss-based congestion control. This paper presents one of the winning team's strategies in the MMSys23 Grand Challenge. The submitted code can be found on GitHub.1.","PeriodicalId":330983,"journal":{"name":"Proceedings of the 14th Conference on ACM Multimedia Systems","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127321745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Remote Expert Assistance System for Mixed-HMD Clients over 5G Infrastructure 5G基础设施混合hmd客户端远程专家协助系统

Proceedings of the 14th Conference on ACM Multimedia Systems Pub Date : 2023-06-07 DOI: 10.1145/3587819.3593939

Frank ter Haar, S. Dijkstra-Soudarissanane, P. Zuraniewski, Rick Hindriks, K. E. Assal, S. Gunkel, Galit Rahim, O. Niamut

引用次数: 0

Style-based film grain analysis and synthesis 基于风格的膜纹分析与合成

Proceedings of the 14th Conference on ACM Multimedia Systems Pub Date : 2023-06-07 DOI: 10.1145/3587819.3590992

Zoubida Ameur, C. Demarty, O. Le Meur, D. Ménard, E. François

{"title":"Style-based film grain analysis and synthesis","authors":"Zoubida Ameur, C. Demarty, O. Le Meur, D. Ménard, E. François","doi":"10.1145/3587819.3590992","DOIUrl":"https://doi.org/10.1145/3587819.3590992","url":null,"abstract":"Film grain which used to be a by-product of the chemical processing in the analog film stock, is a desirable feature in the era of digital cameras. Besides participating to the artistic intent during content creation, film grain has also interesting properties in the video compression chain such as its ability to mask compression artifacts. In this paper, we use a deep learning-based framework for film grain analysis, generation and synthesis. Our framework consists of three modules: a style encoder performing film grain style analysis, a mapping network responsible for film grain style generation, and a synthesis network that generates and blends a specific grain style to a given content in a content-adaptive manner. All modules are trained jointly, thanks to dedicated loss functions, on a new large and diverse dataset of pairs of grain-free and grainy images that we made publicly available to the community1. Quantitative and qualitative evaluations show that fidelity to the reference grain, diversity of grain styles as well as a perceptually pleasant grain synthesis are achieved, demonstrating that each module outperforms the state-of-the-art in the task it was designed for.","PeriodicalId":330983,"journal":{"name":"Proceedings of the 14th Conference on ACM Multimedia Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130374008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A First Look at Adaptive Video Streaming over Multipath QUIC with Shared Bottleneck Detection 第一眼自适应视频流在多径QUIC与共享瓶颈检测

Proceedings of the 14th Conference on ACM Multimedia Systems Pub Date : 2023-06-07 DOI: 10.1145/3587819.3590982

Thomas William do Prado Paiva, Simone Ferlin, A. Brunstrom, O. Alay, B. Y. L. Kimura

引用次数: 1