Wei Tsang Ooi

Associate Professor, Department of Computer Science, National University of Singapore

Co-Director, IPAL, a Franco-Singaporean Joint Research Lab


3D Streaming

Volumetric Video Compression Through Neural-Based Representation

Yuang Shi*, Ruoyu Zhao*, Simone Gasparani, Geraldine Morin, and Wei Tsang Ooi, In Proceedings of the 16th International Workshop on Immersive Mixed and Virtual Environment Systems (MMVE'24), Bari, Italy, 19 April 2024, 85–91.
[DOI]

Quality Assessment and Modeling for MPEG v-PCC Volumetric Video

Yuang Shi*, Samuel Rhys Cox*, and Wei Tsang Ooi, In Proceedings of the 16th International Workshop on Immersive Mixed and Virtual Environment Systems (MMVE'24), Bari, Italy, 19 April 2024, 64–70.
[DOI]

Perceptual Impact of Facial Quality in MPEG v-PCC-Encoded Volumetric Videos

Yuang Shi* and Wei Tsang Ooi, In Proceedings of the 16th International Workshop on Immersive Mixed and Virtual Environment Systems (MMVE'24), Bari, Italy, 19 April 2024, 71–74.
[DOI]

QV4: QoE-based Viewpoint-Aware v-PCC-Encoded Volumetric Video Streaming

Yuang Shi*, Bennet Clements, and Wei Tsang Ooi, In Proceedings of the 15th ACM Multimedia Systems Conference (MMSYS'24), Bari, Italy, 15-19 April 2024.

Towards Volumetric Video Realism in Extended Reality: Challenges and Opportunities

Wei Tsang Ooi, In Proceedings of the 2nd International Workshop on Interactive eXtended Reality (IXR'23), Ottawa, Canada, 29 October 2023 (Keynote).

Enabling Low Bit-Rate MPEG v-PCC-Encoded Volumetric Video Streaming With 3D Sub-Sampling

Yuang Shi*, Pranav Venkatram*, Yifan Ding, and Wei Tsang Ooi, In Proceedings of the 14th ACM Multimedia Systems Conference (MMSYS'23), Vancouver, Canada, 7-10 June 2023, 108-118.
[DOI]

VOLVQAD: An MPEG v-PCC Volumetric Video Quality Assessment Dataset.

Samuel Rhys Cox*, May Lim, and Wei Tsang Ooi, In Proceedings of the 14th ACM Multimedia Systems Conference (MMSYS'23), Vancouver, Canada, 7-10 June 2023, 357-362 (Dataset Track).
[DOI]

A Dynamic 3D Point Cloud Dataset for Immersive Applications

Yuan-Chun Sun, I-Chun Huang, Yuang Shi*, Wei Tsang Ooi, Chun-Ying Huang, and Cheng-Hsin Hsu, In Proceedings of the 14th ACM Multimedia Systems Conference (MMSYS'23), Vancouver, Canada, 7-10 June 2023, 376-383 (Dataset Track).
[DOI]

Error Concealment of Dynamic 3D Point Cloud Streaming

Tzu-Kuang Hung, I-Chun Huang, Samuel Rhys Cox*, Wei Tsang Ooi, and Cheng-Hsin Hsu, In Proceedings of the 30th ACM International Conference on Multimedia (MM'22), Lisboa, Portugal, 10-14 October 2022, 3134-3142.

Quantitative Comparison of Point Cloud Compression Algorithms With PCC Arena

Cheng-Hao Wu, Chih-Fan Hsu, Tzu-Kuan Hung, Carsten Griwodz, Wei Tsang Ooi, and Cheng-Hsin Hsu, IEEE Transactions on Multimedia, (), 2022, 3073-3088.
[DOI]

Dynamic 3D Point Cloud Streaming: Distortion and Concealment

Cheng-Hao Wu, Xiner Li, Rahul Rajesh*, Wei Tsang Ooi, and Cheng-Hsin Hsu, In Proceedings of the 31st Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV’21), Istanbul, Turkey, 28 September - 1 October 2021, 98--105.
[DOI]

Impact of 3D Bookmarks on Navigation and Streaming in a Networked Virtual Environment

Thomas Forgione, Axel Carlier, Géraldine Morin, and Wei Tsang Ooi, In Proceedings of the 7th ACM Multimedia Systems Conference (MMSYS'16), Klagenfurt, Austria, 10-13 May 2016.

Modeling 3D Synthetic View Dissimilarity

Shanghong Zhao* and Wei Tsang Ooi, The Visual Computer, 32(4), 1 January 2016, 429-443.
[DOI]

Bandwidth Adaptation for 3D Mesh Preview Streaming

Shanghong Zhao*, Wei Tsang Ooi, Axel Carlier, Geraldine Morin, and Vincent Charvillat, ACM Transactions of Multimedia Computing, Communications and Applications, 10(1s), 1 January 2014, Article 13 (Special issue of best papers of ACM MMSys 2013 and ACM NOSSDAV 2013).
[DOI]

3D Mesh Preview Streaming

Shanghong Zhao*, Wei Tsang Ooi, Axel Carlier, Geraldine Morin, and Vincent Charvillat, In Proceedings of the 4th ACM Multimedia Systems Conference (MMSYS'13), Oslo, Norway, 27 February - 1 March 2013, 178-189.
[DOI]

Modeling Progressive Mesh Streaming: Does Data Dependency Matter?

Wei Cheng*, Wei Tsang Ooi, Sebastien Mondet, Romulus Grigoras, and Geraldine Morin, ACM Transactions on Multimedia Computing, Communications and Applications, 7(2), 1 February 2011, Article 10 (Journal version of the MM’07 paper).
[DOI]

Towards Understanding User Tolerance to Network Latency and Data Rate in Remote Viewing of Progressive Meshes

Ransi Nilaksha De Silva*, Wei Cheng*, Wei Tsang Ooi, and Shengdong Zhao, In Proceedings of the 20th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV'10), Amsterdam, Netherlands, 2-4 June 2010, 123-128.
[Download Paper] [Download Slides] [DOI]

Group-Based Peer-to-Peer 3D Streaming Authentication

Mo-Che Chan, Jehn-Ruey Jiang, Chao-Wei Hung, and Wei Tsang Ooi, In Proceedings of the 3rd International Workshop on Peer-to-Peer Networked Virtual Environments (P2PNVE'09), Shenzhen, China, 9-11 December 2009.
[Download Paper] [DOI]

Peer-Assisted View-Dependent Progressive Mesh Streaming

Wei Cheng*, Dan Liu*, and Wei Tsang Ooi, In Proceedings of the 17th ACM International Conference on Multimedia (MM'09), Beijing, China, 19-24 October 2009, 441-450.
[Download Paper] [DOI]

A Demonstration of MobiTree: Progressive 3D Tree Models Streaming on Mobile Clients

Andra Doran, Sebastien Mondet, Romulus Grigoras, Geraldine Morin, Wei Tsang Ooi, and Frederick Boudon, In Proceedings of the 17th ACM International Conference on Multimedia (MM'09), Beijing, China, 19-24 October 2009, 955-956, Technical Demonstration .
[DOI]

Towards Characterizing User Interaction With Progressively Transmitted 3D Meshes

Ransi Nilaksha De Silva*, Wei Cheng, Dan Liu, Wei Tsang Ooi, and Shengdong Zhao, In Proceedings of the 17th ACM International Conference on Multimedia (MM'09), Beijing, China, 19-24 October 2009, 881-884, Short Paper .
[Download Paper] [DOI]

Streaming of Plants in Distributed Virtual Environments

Sebastien Mondet, Wei Cheng, Géraldine Morin, Romulus Grigoras, Frederic Boudon, and Wei Tsang Ooi, In Proceedings of the 16th ACM International Conference on Multimedia (MM'08), Vancouver, Canada, 27-31 October 2008, 1-10 (Best Paper).
[Download Paper] [DOI]

Receiver-Driven View-Dependent Streaming of Progressive Mesh

Wei Cheng* and Wei Tsang Ooi, In Proceedings of the 18th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV'08), Braunschweig, Germany, 28-30 May 2008, 9-14.
[Download Paper] [DOI]

An Analytical Model for Progressive Mesh Streaming

Wei Cheng*, Wei Tsang Ooi, Sebastian Mondet, Romulus Grigoras, and Geraldine Morin, In Proceedings of the 15th ACM International Conference on Multimedia (MM'07), Augsburg, Germany, 24-29 September 2007, 737-746.
[Download Paper] [Download Slides] [DOI]

Packetization of 3D Progressive Meshes for Streaming Over Lossy Networks

Yan Gu* and Wei Tsang Ooi, In Proceedings of the 14th International Conference on Computer Communications and Networks (ICCCN'05), San Diego, CA, 17-19 October 2005 (Best Paper Candidate).
[Download Paper] [DOI]

Artificial Intelligence

SlideCraft: Synthetic Slides Generation for Robust Slide Analysis

Travis Sng, Axel Carlier, Thomas Forgione, Vincent Charvillat, and Wei Tsang Ooi, In Proceedings of the International Conference on Document Analysis and Recognition (ICDAR'24), Athens, Greece, 30 August - 4 September 2024 (To appear).

CAESAR: Enhancing Federated RL in Heterogeneous MDPs Through Convergence-Aware Sampling With Screening

Hei Yi Mark, Flint Xiaofeng Fan*, Luca A Lanzendorfer, Cheston Tan, Wei Tsang Ooi, and Roger Wattenhofer, In Proceedings of the 16th Workshop on Adaptive and Learning Agents (ALA'24), Auckland, NZ, 6-7 May 2024.

OpenESS: Event-Based Semantic Scene Understanding With Open Vocabularies

Lingdong Kong*, Youquan Liu, Lai Xing Ng, Benoit R Cottereau, and Wei Tsang Ooi, In Proceedings of the 2024 Conference on Computer Vision and Pattern Recognition (CVPR'24), Seattle, WA, 17-21 June 2024 (Poster (Highlight)).

RoboDepth: Robust Out-of-Distribution Depth Estimation Under Corruptions

Lingdong Kong*, Shaoyuan Xie, Hanjiang Hu, Lai Xing Ng, Benoit R Cottereau, and Wei Tsang Ooi, In Proceedings of the 37th Conference on Neural Information Processing Systems (NeurIPS'23), New Orleans, LA, 12-14 December 2023 (Datasets and Benchmarks Track).

Efficient AI

Shape-Based Conditional Neural Field for Wrist-Worn Change-Point Detection

Yuang Shi*, Varsha Suresh*, and Wei Tsang Ooi, In Proceedings of the 2022 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events: Workshop on Sensing Systems and Applications Using Wrist Worn Smart Devices (WristSense'22), Pisa, Italy, 21 March 2022, 787-792.
[DOI]

Embedded Multimedia Systems

On Buffering With Stochastic Guarantees in Resource-Constrained Media Players

Balaji Raman*, Guillaume Quintin, Wei Tsang Ooi, Deepak Gangadharan, Jerome Milan, and Samarjit Chakraborty, In Proceedings of the 9th International Conference on Hardware/Software Codesign and System Synthesis (CODES +ISSS'11), Taipei, Taiwan, 9-14 October 2011, 169-178.
[Download Paper] [DOI]

Reducing Data-Memory Footprint of Multimedia Applications by Delay Redistribution

Balaji Raman*, Samarjit Chakraborty, Wei Tsang Ooi, and Santanu Dutta, In Proceedings of the 44th Design Automation Conference (DAC'07), San Diego, CA, 4-8 June 2007, 738-743.
[Download Paper] [DOI]

Workload Characterization and Cost-Quality Tradeoffs in MPEG-4 Decoding on Resource-Constrained Devices

Yanhong Liu*, Samarjit Chakraborty, Wei Tsang Ooi, Ashish Gupta, and Subramanian Mohan, In Proceedings of the IEEE 3rd Workshop on Embedded Systems for Real-Time Multimedia (ESTIMedia'05), New York, NY, 22-23 September 2005, 129-134.
[DOI]

Approximate VCCs: A New Characterization of Multimedia Workloads for System-Level MpSoC Design

Yanhong Liu*, Samarjit Chakraborty, and Wei Tsang Ooi, In Proceedings of the 42th Design Automation Conference (DAC'05), Anaheim, CA, 13-17 June 2005, 248-253 (Best Paper Candidate).
[DOI]

Meeting CPU Constraints by Delaying Playout of Multimedia Tasks

Balaji Raman*, Samarjit Chakraborty, and Wei Tsang Ooi, In Proceedings of the 15th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV'05), Stevenson, WA, 12-14 June 2005, 165-170.
[Download Paper]

Processor Frequency Selection in Energy-Aware SoC Platform Design for Multimedia Applications

Yanhong Liu*, Alexander Maxiaguine, Samarjit Chakraborty, and Wei Tsang Ooi, In Proceedings of the 25th IEEE International Real-Time Systems Symposium (RTSS'04), Lisbon, Portugal, 5-8 December 2004, 336-345.
[Download Paper] [DOI]

Identifying Representative Workloads in Designing MpSoC Platforms for Media Processing

Alexander Maxiaguine, Yanhong Liu*, Samarjit Chakraborty, and Wei Tsang Ooi, In Proceedings of the 2nd Workshop on Embedded Systems for Real-Time Multimedia (ESTIMedia'04), Stockholm, Sweden, 6-7 September 2004, 41-46.
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Human-AI Interaction

Comparing How a Chatbot References User Utterances From Previous Chatting Sessions: An Investigation of Users’ Privacy Concerns and Perceptions

Samuel Rhys Cox*, Yi-Chieh Lee, and Wei Tsang Ooi, In Proceedings of the 11th International Conference on Human-Agent Interaction (HAI'23), Gothenburg, Sweden, 4-7 December 2023.
[DOI]

Conversational Interactions With NPCs in LLM-Driven Gaming: Guidelines From a Content Analysis of Player Feedback

Samuel Rhys Cox* and Wei Tsang Ooi, In Proceedings of the 7th International Workshop on Chatbot Research (Conversations), Oslo, Norway, 22-23 November 2023.
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Does Chatbot Language Formality Affect Users' Self-Disclosure?

Samuel Rhys Cox* and Wei Tsang Ooi, In Proceedings of the ACM 4th Conference on Conversational User Interfaces (CUI'22), Glasgow, UK, 26-28 July 2022, 1-13.

Human-Computer Interface

AdaptReview: Towards Effective Video Review Using Text Summaries and Concept Maps

Shan Zhang*, Yang Chen, Nuwan Janaka, Chloe Haigh, Shengdong Zhao, and Wei Tsang Ooi, In Proceedings of the 19th IFIP TC13 International Conference on Human-Computer Interaction (INTERACT), York, UK, 28 August - 1 September 2023, 461-481.
[DOI]

Moment-to-Moment Continuous Attention Fluctuation Monitoring Through Consumer-Grade EEG Device

Shan Zhang*, Zihan Yan, Shardul Sapkota, Shengdong Zhao, and Wei Tsang Ooi, MDPI Sensors, 21(10), 2021, 3419.
[Download Paper] [DOI]

A Video Timeline With Bookmarks and Prefetch State for Faster Video Browsing

Axel Carlier, Vincent Charvillat, and Wei Tsang Ooi, In Proceedings of the 23rd ACM International Conference on Multimedia (MM'15), Brisbane, Australia, 26-30 October 2015, 967-970, Short Paper .
[DOI]

BezelCopy: An Efficient Cross-Application Copy-Paste Technique for Touchscreen Smartphones

Chen Chen, Simon T. Perrault, Shengdong Zhao, and Wei Tsang Ooi, In Proceedings of the International Working Conference on Advanced Visual Interfaces (AVI'14), Como, Italy, May 25-29 2014, 185-192.
[DOI]

AutoComPaste: Auto-Completing Text as an Alternative to Copy-Paste

Shengdong Zhao*, Fanny Chevalier, Wei Tsang Ooi, Chee Yuan Lee, and Arpit Agarwal, In Proceedings of the International Working Conference on Advanced Visual Interfaces (AVI'12), Capri Island, Italy, 22 - 25 May 2012, 365-372.
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Media Processing in the Cloud

Multi-Camera Video Scene Graphs for Surveillance Videos Indexing and Retrieval

Toshal Patel, Alvin Yan Hong Yao, Yu Qiang, Wei Tsang Ooi, and Roger Zimmermann, In Proceedings of the 2021 IEEE International Conference on Image Processing (ICIP'21), Anchorage, Alaska, 19 - 22 September 2021, 2383-2387.
[DOI]

Analysis of Large-Scale Distributed Cameras Using Cloud

Wenyi Chen, Anup Mohan, Yung Hsiang Lu, Thomas Hacker, Wei Tsang Ooi, and Edward Delp, IEEE Cloud Compting, 2(5), 2015, 54-62.
[DOI]

Secret Sharing Approach for Securing Cloud-Based Pre-Classification Volume Ray-Casting

Manoranjan Mohanty*, Wei Tsang Ooi, and Pradeep K. Atrey, Multimedia Tools and Applications, 75(11), 31 March 2015, 6207-6235.
[DOI]

Secure Cloud-Based Volume Ray-Casting

Manoranjan Mohanty*, Wei Tsang Ooi, and Pradeep K. Atrey, In Proceedings of the IEEE 5th International Conference on Cloud Computing Technology and Science (CloudCom'13), Bristol, UK, 2-5 December 2013, 531-538.
[DOI]

Scale Me, Crop Me, Know Me Not: Supporting Scaling and Cropping in Secret Image Sharing

Manoranjan Mohanty*, Wei Tsang Ooi, and Pradeep K. Atrey, In Proceedings of the 2013 IEEE International Conference on Multimedia and Expo (ICME'13), San Jose, USA, 15-19 July 2013.
[DOI]

El-Pincel: A Painter Cloud Service for Greener Web Pages

Bhojan Anand, Lee Kee Chong, Ee-Chien Chang, Mun Choon Chan, Akkihebbal L. Ananda, and Wei Tsang Ooi, In Proceedings of the 20th ACM International Conference on Multimedia (MM'12), Nara, Japan, 29 October - 2 November 2012, 399-408.
[DOI]

Video Quality for Face Detection, Recognition, and Tracking

Pavel Korshunov* and Wei Tsang Ooi, ACM Transactions on Multimedia Computing, Communications and Applications, 7(3), 1 August 2011, Article 14 (Nicolas D. Georganas Best Paper Award).
[Download Paper] [DOI]

Critical Video Quality for Distributed Automated Video Surveillance

Pavel Korshunov* and Wei Tsang Ooi, In Proceedings of the 13th ACM International Conference on Multimedia (MM'05), Singapore, 6-12 November 2005, 151-160.
[Download Paper] [DOI]

Medical Image Computing

Neurite Tracing With Object Process

Sreetama Basu*, Daniel Racoceanu, and Wei Tsang Ooi, IEEE Transactions on Medical Imaging, 35(6), 2016, 1443-1451.
[DOI]

Improved Marked Point Process Priors for Single Neurite Tracing

Sreetama Basu*, Wei Tsang Ooi, and Daniel Racoceanu, In Proceedings of the International Workshop on Pattern Recognition in Neuroimaging (PRNI'14), Tubingen, Germany, 4-6 June 2014, 1-4.
[DOI]

A Stochastic Model for Automatic Extraction of 3D Neuronal Morphology

Sreetama Basu*, Maria Kulikova, Elena Zhizhina, Wei Tsang Ooi, and Daniel Racoceanu, In Proceedings of the 16th International Conference on Medical Image Computing and Computer-Assisted Intervention (MICCAI'13), Nagoya, Japan, 22-26 September 2013.

Streaming Histopathological Images

Manoranjan Mohanty* and Wei Tsang Ooi, In Proceedings of the 2012 Pacific-Rim Conference on Multimedia (PCM'12), Singapore, 4-6 December 2012, 534-545.

Secure Cloud-Based Medical Data Visualization

Manoranjan Mohanty*, Pradeep K. Atrey, and Wei Tsang Ooi, In Proceedings of the 20th ACM International Conference on Multimedia (MM'12), Nara, Japan, 29 October - 2 November 2012, 1105-1108, Short Paper .
[DOI]

Medication Adherence

Does Chatbot Language Formality Affect Users' Self-Disclosure?

Samuel Rhys Cox* and Wei Tsang Ooi, In Proceedings of the ACM 4th Conference on Conversational User Interfaces (CUI'22), Glasgow, UK, 26-28 July 2022, 1-13.

Shape-Based Conditional Neural Field for Wrist-Worn Change-Point Detection

Yuang Shi*, Varsha Suresh*, and Wei Tsang Ooi, In Proceedings of the 2022 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events: Workshop on Sensing Systems and Applications Using Wrist Worn Smart Devices (WristSense'22), Pisa, Italy, 21 March 2022, 787-792.
[DOI]

Perceptions and Acceptability of Digital Interventions Among Tuberculosis Patients in Cambodia: Qualitative Study of Video-Based Directly Observed Therapy

Lila Rabinovich, James Steven Molton, Wei Tsang Ooi, Nicholas Iain Paton, Shelly Batra, and Joanne Yoong, Journal of Medical Internet Research, 22(7), 27 July 2020, e16856.
[DOI]

Preliminary Effects of a Mobile Interactive Supervised Therapy Intervention on People Living With HIV: Pilot Randomized Controlled Trial

Yan Pang, James Steven Molton, Wei Tsang Ooi, Nicholas Iain Paton, and Hong-Gu He, JMIR mHealth and uHealth, 8(3), 2020, e15702.
[DOI]

Prospective Single-Arm Interventional Pilot Study to Assess a Smartphone-Based System for Measuring and Supporting Adherence to Medication

James S Molton, Yan Pang, Zhuochun Wang, Boqin Qiu, Pei Wu, Anifah Rahman-Shepherd, Wei Tsang Ooi, and Nicholas I Paton, BMJ Open, 6(12), 2016, e014194.
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Miscellaneous

Reducing Frame Rate for Object Tracking

Pavel Korshunov* and Wei Tsang Ooi, In Proceedings of the 16th International Conference on Advances in Multimedia Modeling (MMM'10), Chongqing, China, 6-8 January 2010, 454-464.
[Download Paper] [DOI]

A Stochastic Dynamic Traveling Salesman Problem With Hard Time Windows

Tsung-Sheng Chang, Yat-Wah Wan, and Wei Tsang Ooi, European Journal of Operational Research, 198(3), 1 November 2009, 748-759.
[DOI]

Hierarchical Non-Uniform Locality Sensitive Hashing and Its Application to Video Identification

Zixiang Yang*, Wei Tsang Ooi, and Qibin Sun, In Proceedings of the 2004 IEEE International Conference on Multimedia and Expo (ICME'04), Taipei, Taiwan, 27-30 June 2004, 743-746.
[Download Paper] [DOI]

Mobile Video

A Highly Robust Deep Learning Technique for Overlap Detection Using Audio Fingerprinting.

Akash Uikey, Anterpreet Kaur Bedii, Priyankar Choudhary, Wei Tsang Ooi, and Mukesh Saini, Multimedia Tools and Applications, 83(10), 2024, 29119-29137.

Automated Link Generation for Sensor-Enriched Smartphone Images

Padmanabha Venkatagiri Seshadri, Mun Choon Chan, and Wei Tsang Ooi, ACM Transactions of Multimedia Computing, Communications and Applications, 12(1s), 2015, Article 13 (Special Issue on Smartphone-based Interactive Technologies, Systems, and Applications).
[DOI]

Jiku Director 2.0: A Mobile Video Mashup System With Zoom and Pan Using Motion Maps

Duong-Trung-Dung Nguyen*, Axel Carlier, Wei Tsang Ooi, and Vincent Charvillat, In Proceedings of the 22nd ACM International Conference on Multimedia (MM'14), Orlando, Florida, 3-7 November 2014, 765-766, Technical Demonstration .
[DOI]

3D Interest Maps From Simultaneous Video Recordings

Axel Carlier, Lilian Calvet, Duong-Trung-Dung Nguyen*, Wei Tsang Ooi, Pierrer Gurdjos, and Vincent Charvillat, In Proceedings of the 22nd ACM International Conference on Multimedia (MM'14), Orlando, Florida, 3-7 November 2014, 577-586.
[DOI]

On Demand Retrieval of CrowdSourced Mobile Video

Padmanabha Venkatagiri Seshadri, Mun Choon Chan, Wei Tsang Ooi, and Jiahan Chiam, IEEE Sensors Journal, PP(99), 8 July 2014, Article 1 (Special Issue on Distributed Smart Sensing for Mobile Vision).

Jiku Director: A Mobile Video Mashup System

Duong-Trung-Dung Nguyen*, Mukesh Saini, Vu-Thanh Nguyen, and Wei Tsang Ooi, In Proceedings of the 21st ACM International Conference on Multimedia (MM'13), Barcelona, Spain, 21-25 October 2013, Technical Demonstration (Best Demo Award).
[DOI]

The Jiku Mobile Video Dataset

Mukesh Kumar Saini*, Padmanabha Venkatagiri Seshadri, Wei Tsang Ooi, and Mun Choon Chan, In Proceedings of the 4th ACM Multimedia Systems Conference (MMSYS'13), Oslo, Norway, 27 February - 1 March 2013, 108-113.
[DOI]

Mobile-to-Mobile Video Recommendation

Padmanabha Venkatagiri Seshadri, Mun Choon Chan, and Wei Tsang Ooi, In Proceedings of the 9th International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services (Mobiquitous'12), Beijing, China, 12-14 December 2012 (Short version of http://arxiv.org/abs/1211.2063).
[Download Paper] [DOI]

MoViMash: Online Mobile Video Mashups

Mukesh Kumar Saini*, Raghudeep Gadde, Shuicheng Yan, and Wei Tsang Ooi, In Proceedings of the 20th ACM International Conference on Multimedia (MM'12), Nara, Japan, 29 October - 2 November 2012, 139-148.
[Download Paper] [DOI]

Multimedia Tools and Systems

Plasma: A Scripting Language for Processing Media Streams

Tao Zhu*, Pavel Korshunov*, Bing Liu*, and Wei Tsang Ooi, In Proceedings of the ACM/SPIE Multimedia Computing and Networking (MMCN'07), San Jose, CA, 28 January - 1 February 2007.
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Indiva: A Middleware for Managing Distributed Media Environment

Wei Tsang Ooi, Peter Pletcher, and Larry Rowe, In Proceedings of the SPIE/ACM Multimedia Computing and Networking (MMCN'04), Santa Clara, CA, 21-22 January 2004.
[Download Paper]

Dali: A Multimedia Software Library

Wei Tsang Ooi and Brian Smith et al., In Proceedings of the 1999 SPIE Multimedia Computing and Networking (MMCN'99), San Jose, CA, 25-27 January 1999.
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The Dali Multimedia Software Library

Wei Tsang Ooi, Brian Smith, Sugata Mukhopadhyay, Haye Hsi Chen, Steven Weiss, Matthew Chiu, and Jiesang Song, In Proceedings of the 2nd IEEE Workshop on Multimedia Signal Processing (MMSP’98), Los Angeles, CA, 7-9 December 1998, 329-334 (Short version of MMCN’99 paper).
[DOI]

NVE and Games

CloudyGame: Enabling Cloud Gaming on the Edge With Dynamic Asset Streaming and Shared Game Instances

Anand Bhojan, Ng Siang Ping*, Joel Ng*, and Wei Tsang Ooi, Multimedia Tools and Applications, 79(43-44), 2020, 32503-32523.
[DOI]

Using 3D Bookmarks for Desktop and Mobile DASH-3D Clients

Thomas Forgione, Axel Carlier, Géraldine Morin, Wei Tsang Ooi, and Vincent Charvillat, In Proceedings of the 27th ACM International Conference on Multimedia (MM’19), Nice, France, 21-25 October 2019, 2221-2222.
[DOI]

DASH for 3D NVE

Thomas Forgione, Axel Carlier, Géraldine Morin, Wei Tsang Ooi, Vincent Charvillat, and Praveen Kumar Yadav*, In Proceedings of the 26th ACM International Conference on Multimedia (MM'18), Seoul, Korea, 22-26 October 2018, 1910-1918.
[DOI]

Cloud Baking: Collaborative Scene Illumination for Dynamic Web3D Scenes

Chang Liu*, Wei Tsang Ooi, Jinyuan Jia, and Lei Zhao, ACM Transactions of Multimedia Computing, Communications and Applications, 14(3s), 2018, Article 59 (Special Section on Delay-Sensitive Video Computing in the Cloud).
[DOI]

SuperStreamer: Enabling Progressive Content Streaming in a Game Engine

Yong Xue Eu*, Jermyn Tanu*, Justin Jieting Law*, Muhammad Hannah B Ghazali*, Shyan Siang Tay, Wei Tsang Ooi, and Anand Bhojan, In Proceedings of the 24th ACM International Conference on Multimedia (MM'16), Amsterdam, The Netherlands, 15-19 October 2016, 737-738, Technical Demonstration .
[Download Paper] [DOI]

Sprite Tree: An Efficient Image-Based Representation for Networked Virtual Environments

Minhui Zhu*, Geraldine Morin, Vincent Charvillat, and Wei Tsang Ooi, The Visual Computer, 33(11), 2016, 1385-1402.
[DOI]

Joserlin: Joint Request and Service Scheduling for Peer-to-Peer Non-Linear Media Access

Zhen Wei Zhao* and Wei Tsang Ooi, In Proceedings of the 21st ACM International Conference on Multimedia (MM'13), Barcelona, Spain, 21-25 October 2013.
[DOI]

Mixing Virtual and Physical Participation: The Future of Conference Attendance?

Shervin Shirmohammadi, Shun-Yun Hu, Wei Tsang Ooi, Gregor Schiele, and Arno Wacker, In Proceedings of the 5th International Workshop on Massively Multiuser Virtual Environments (MMVE'12), Munich, Germany, 8 October 2012.
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SYMA: A Synchronous Multihop Architecture for Wireless Ad Hoc Multiplayer Games

Yu-Tan Huang, Chih-Ming Lin, Jehn-Ruey Jiang, Wei Tsang Ooi, Maha Abdallah, and Khaled Boussetta, In Proceedings of the 5th International Workshop on Peer-to-Peer Networked Virtual Environments (P2PNVE'11), Tainan, Taiwan, 7-9 December 2011, 793-798.
[DOI]

Towards Peer-Assisted Rendering in Networked Virtual Environments

Minhui Zhu*, Sebastien Mondet, Géraldine Morin, Wei Tsang Ooi, and Wei Cheng, In Proceedings of the 19th ACM International Conference on Multimedia (MM'11), Scottsdale, AZ, 28 November - 1 December 2011, 183-192.
[Download Paper] [Download Slides] [DOI]

Peer-Assisted Texture Streaming in Metaverses

Ke Liang, Roger Zimmermann, and Wei Tsang Ooi, In Proceedings of the 19th ACM International Conference on Multimedia (MM'11), Scottsdale, AZ, 28 November - 1 December 2011, 203-212.
[Download Paper] [DOI]

Evaluation of the HyperVerse Avatar Management Scheme Based on the Analysis of Second Life Traces

Markus Esch, Wei Tsang Ooi, Ingo Scholtes, and , In Proceedings of the 3rd International Workshop on Peer-to-Peer Networked Virtual Environments (P2PNVE'09), Shenzhen, China, 9-11 December 2009.
[Download Paper] [DOI]

Avatar Mobility in User-Created Networked Virtual Worlds: Measurements, Analysis, and Implications

Huiguang Liang, Ransi Nilaksha De Silva*, Wei Tsang Ooi, and Mehul Motani, Multimedia Tools and Applications, 45(1-3), 1 October 2009, 163-190.
[Download Slides] [DOI]

Compact and Progressive Plant Models for Streaming in Networked Virtual Environments

Sebastien Mondet, Wei Cheng, Géraldine Morin, Romulus Grigoras, Frederic Boudon, and Wei Tsang Ooi, ACM Transactions on Multimedia Computing Communications and Applications, 5(3), 1 August 2009, 1-22 (Journal version of the MM’08 best paper).
[DOI]

Textures in Second Life: Measurement and Analysis

Huiguan Liang, Mehul Motani, and Wei Tsang Ooi, In Proceedings of the 2nd International Workshop on Peer-to-Peer Networked Virtual Environments (P2PNVE'08), Melbourne, Australia., 8-10 December 2008, 823-828.
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Games Are Up for DVFS

Yan Gu*, Samarjit Chakraborty, and Wei Tsang Ooi, In Proceedings of the 43rd Design Automation Conference (DAC'06), San Francisco, CA, 24-28 July 2006, 598-603.
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Network and Distributed Systems

Throughput Estimation for Short Lived TCP Cubic Flows

Girisha De Silva, Mun Choon Chan, and Wei Tsang Ooi, In Proceedings of the 13th International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services (Mobiquitous'16), Hiroshima, Japan, 28 November - 1 December 2016, 227-236.
[DOI]

Mitigating Unfairness Due to Physical Layer Capture in Practical 802.11 Mesh Networks

Wei Wang, Ben Leong, and Wei Tsang Ooi, IEEE Transactions on Mobile Computing, 14(1), 1 January 2015, 99-112.
[DOI]

Modeling CSMA/CA Network Under Asymmetric Conditions

Hui Wang*, Wei Tsang Ooi, and Mun Choon Chan, In Proceedings of the 8th ACM workshop on Performance Monitoring and Measurement of Heterogeneous Wireless and Wired Networks (PM2HW2N'13), Barcelona, Spain, 11 November 2013, 67-74.
[DOI]

Adaptive Antenna Adjustment for 3D Urban Wireless Mesh Networks

Guoqing Yu, Wei Wang, Kim Leng Yong, Ben Leong, and Wei Tsang Ooi, In Proceedings of the 10th IEEE International Conference on Sensing, Communication, and Networking (SECON'13), New Orleans, LA, 24-27 June 2013.
[DOI]

Understanding and Mitigating TCP Starvation in 802.11 Wireless Mesh Networks

Wei Wang, Ben Leong, and Wei Tsang Ooi, In Proceedings of the 19th IEEE International Conference on Network Protocols (ICNP'11), Vancouver, Canada, 17-20 October 2011, 121-122, Short Paper .
[DOI]

Equilibrium Analysis Through Separation of User and Network Behavior

Y.C. Tay, Dinh Nguyen Tran, E.Y. Liu, Wei Tsang Ooi, and Robert Morris, Computer Networks, 52(18), 1 December 2008, 3405-3420.
[DOI]

Analysis and Implications of Student Contact Patterns Derived From Campus Schedules

Vikram Srinivasan, Mehul Motani, and Wei Tsang Ooi, In Proceedings of the 20th Annual ACM International Conference on Mobile Computing and Networking (MOBICOM'06), Los Angeles, CA, 23-29 September 2006, 86-97.
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SAX: A Tool for Studying Congestion-Induced Surfer Behavior

Dinh Nguyen Tran, Wei Tsang Ooi, and Y.C. Tay, In Proceedings of the Passive and Active Measurement Conference (PAM'06), Adelaide, Australia, 30-31 March 2006, 51-60.
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Controlling Gossip Protocol Infection Pattern Using Adaptive Fanout

Satish Verma* and Wei Tsang Ooi, In Proceedings of the 25th International Conference on Distributed Computing Systems (ICDCS'05), Columbus, OH, 6-9 June 2005, 665-674.
[DOI]

Distributed Construction of Resource-Efficient Overlay Tree by Approximating MST

Yuan Li* and Wei Tsang Ooi, In Proceedings of the 2004 IEEE International Conference on Multimedia and Expo (ICME'04), Taipei, Taiwan, 27-30 June 2004, 1507-1510.
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Video Processing in the Cloud

Distributing Media Transformation Over Multiple Media Gateways

Wei Tsang Ooi and Robbert van Renesse, In Proceedings of the 9th ACM International Conference on Multimedia (MM'01), Ottawa, Canada, 30 September - 5 October 2001, 159-168.
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Design and Implementation of Distributed Programmable Media Gateways

Wei Tsang Ooi, Ph.D. Thesis, Cornell University.
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An Adaptive Protocol for Locating Media Gateways

Wei Tsang Ooi and Robbert van Renesse, In Proceedings of the 8th ACM International Conference on Multimedia (MM'00), Los Angeles, CA, 30 October-3 November 2000, 137-145.
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Design and Implementation of Programmable Media Gateways

Wei Tsang Ooi, Robbert van Renesse, and Brian Smith, In Proceedings of the 10th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV'00), Chapel Hill, NC, 26-28 June 2000.
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Video Streaming

MultiLive: Adaptive Bitrate Control for Low-Delay Multi-Party Interactive Live Streaming

Ziyi Wang, Yong Cui, Xiaoyu Hu, Xin Wang, Wei Tsang Ooi, Zhen Cao, and Yi Li, IEEE/ACM Transactions on Networking, 30(2), 2022, 923-938 (Extended version of INFOCOM'20 Paper).
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Playing Chunk-Transferred DASH Segments at Low Latency With QLive

Praveen Kumar Yadav*, Abdelhak Bentaleb, May Lim, Junyi Huang, Wei Tsang Ooi, and Roger Zimmermann, In Proceedings of the 12th ACM Multimedia Systems Conference (MMSYS'21), Istanbul, Turkey, 28 September - 1 October 2021, 51--64 (DASH-IF Excellence in DASH Award (Runner-Up)).
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Tile Rate Allocation for 360-Degree Tiled Adaptive Video Streaming

Praveen Kumar Yadav* and Wei Tsang Ooi, In Proceedings of the 28th ACM International Conference on Multimedia (MM’20), Seattle, WA, 12-16 October 2020.
[DOI]

MultiLive: Adaptive Bitrate Control for Low-Delay Multi-Party Interactive Live Streaming

Ziyi Wang, Yong Cui, Xiaoyu Hu, Xin Wang, Wei Tsang Ooi, and Yi Li, In Proceedings of the IEEE International Conference on Computer Communications (INFOCOM’20), Online, 6-9 July 2020, 144.
[DOI]

DQ-DASH: A Queuing Theory Approach to Distributed Adaptive Video Streaming

Abdelhak Bentaleb, Praveen Kumar Yadav*, Wei Tsang Ooi, and Roger Zimmermann, ACM Transactions of Multimedia Computing, Communications and Applications, 16(1), 2020, 4:1—4:24.
[DOI]

QUETRA: A Queuing Theory Approach to DASH Rate Adaptation

Praveen Kumar Yadav*, Arash Shafiei*, and Wei Tsang Ooi, In Proceedings of the 25th ACM International Conference on Multimedia (MM'17), Mountain View, CA, 23-27 October 2017, 1130-1138.
[DOI]

Multimedia Prefetching With Optimal Markovian Policies

Cesar Plesca, Vincent Charvillat, and Wei Tsang Ooi, Journal of Network and Computer Applications, 69(), 7 May 2016, 40-53.
[DOI]

JurCast: Joint User and Rate Allocation for Video Multicast Over Multiple APs

Wang Hui*, Wei Tsang Ooi, and Mun Choon Chan, In Proceedings of the IEEE International Conference on Computer Communications (INFOCOM'16), San Francisco, CA, 10-15 April 2016.
[DOI]

APRICOD: An Access Pattern-Driven Distributed Caching Middleware for Fast Content Discovery

Zhen Wei Zhao* and Wei Tsang Ooi, ACM Transactions of Multimedia Computing, Communications and Applications, 9(2), 1 May 2012, Article 15.
[DOI]

Modeling the Effect of User Interactions on Mesh-Based P2P VOD Streaming Systems

Zhen Wei Zhao*, Sameer Samath, and Wei Tsang Ooi, ACM Transactions of Multimedia Computing, Communications and Applications, 9(2), 1 May 2012, Article 13.
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APRICOD: A Distributed Caching Middleware for Fast Content Discovery of Non-Continuous Media Access

Zhen Wei Zhao* and Wei Tsang Ooi, In Proceedings of the 19th ACM International Conference on Multimedia (MM'11), Scottsdale, AZ, 28 November - 1 December 2011, 1241-1244, Short Paper (Short version of the TOMCCAP Paper).
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Integrated Optimization of Video Server Resource and Streaming Quality Over Best-Effort Network

Hang Yu, Ee-Chien Chang, Wei Tsang Ooi, Mun Choon Chan, and Wei Cheng, IEEE Transactions on Circuits and Systems for Video Technology, 19(3), 1 March 2009, 374-385.
[DOI]

Congestion Control in Distributed Media Streaming

Lin Ma* and Wei Tsang Ooi, In Proceedings of the 26th Annual IEEE Conference on Computer Communications (INFOCOM'07), Anchorage, Alaska, 6-12 May 2007, 1397-1405.
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Retransmission in Distributed Media Streaming

Lin Ma* and Wei Tsang Ooi, In Proceedings of the 15th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV'05), Stevenson, WA, 12-14 June 2005, 117-122.
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Dagster: Contributor Aware End-Host Multicast for Media Streaming in Heterogeneous Environment

Wei Tsang Ooi, In Proceedings of the ACM/SPIE Multimedia Computing and Networking (MMCN'05), San Jose, CA, 19-20 January 2005.
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Layered Coding With Good Allocation Outperforms Multiple Description Coding Over Multiple Paths

Vu Thanh Nguyen, Ee-Chien Chang, and Wei Tsang Ooi, In Proceedings of the 2004 IEEE International Conference on Multimedia and Expo (ICME'04), Taipei, Taiwan, 27-30 June 2004, 1067-1070.
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Zoomable Video

Wireless Multicast for Zoomable Video Streaming

Hui Wang*, Mun Choon Chan, and Wei Tsang Ooi, ACM Transactions of Multimedia Computing, Communications and Applications, 12(1), 2015, Article 5.
[DOI]

Mixing Tile Resolutions in Tiled Video: A Perceptual Quality Assessment

Hui Wang*, Vu-Thanh Nguyen*, Wei Tsang Ooi, and Mun Choon Chan, In Proceedings of the 24th ACM Workshop on Network and Operating Systems Support for Digital Audio and Video (NOSSDAV'14), Singapore, 19-20 March 2014, 25-30.
[DOI]

Zoomable Video Playback on Mobile Devices by Selective Decoding

Feipeng Liu* and Wei Tsang Ooi, In Proceedings of the 2012 Pacific-Rim Conference on Multimedia (PCM'12), Singapore, 4-6 December 2012, 251-262.
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Jiku Live: Live Zoomable Video Streaming

Arash Shafiei*, Guntur Ravindra*, Ngo Quang Minh Khiem*, Wei Tsang Ooi, Mukesh Kumar Saini, and Cong Pang, In Proceedings of the 20th ACM International Conference on Multimedia (MM'12), Nara, Japan, 29 October - 2 November 2012, 1265-1266, Technical Demonstration .
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On Tile Assignment for Region-of-Interest Video Streaming in a Wireless LAN

Guntur Ravindra* and Wei Tsang Ooi, In Proceedings of the 22nd International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV'12), Toronto, Canada, 7-8 June 2012.
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COZI: Crowdsourced and Content-Based Zoomable Video Player

Axel Carlier*, Arash Shafiei, Julien Badie, Salim Bensiali, and Wei Tsang Ooi, In Proceedings of the 19th ACM International Conference on Multimedia (MM'11), Scottsdale, AZ, 28 November - 1 December 2011, 829-830, Technical Demonstration .
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Combining Content-Based Analysis and Crowdsourcing to Improve User Interaction With Zoomable Video

Axel Carlier*, Guntur Ravindra*, Vincent Charvillat, and Wei Tsang Ooi, In Proceedings of the 19th ACM International Conference on Multimedia (MM'11), Scottsdale, AZ, 28 November - 1 December 2011, 43-52.
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Towards Understanding User Tolerance to Network Latency in Zoomable Video Streaming

Ngo Quang Minh Khiem*, Guntur Ravindra*, and Wei Tsang Ooi, In Proceedings of the 19th ACM International Conference on Multimedia (MM'11), Scottsdale, AZ, 28 November - 1 December 2011, 977-980, Short Paper .
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Adaptive Encoding of Zoomable Video Streams Based on User Access Pattern

Ngo Quang Minh Khiem*, Guntur Ravindra*, and Wei Tsang Ooi, In Proceedings of the 2nd ACM Multimedia Systems Conference (MMSYS'11), Santa Clara, CA, 23-25 February 2011, 211-222.
[DOI]

Crowdsourced Automatic Zoom and Scroll for Video Retargeting

Axel Carlier*, Vincent Charvillat, Wei Tsang Ooi, Romulus Grigoras, and Geraldine Morin, In Proceedings of the 18th ACM International Conference on Multimedia (MM'10), Florence, Italy, 25-30 October 2010, 201-211.
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Towards Characterizing Users' Interaction With Zoomable Video

Axel Carlier*, Guntur Ravindra*, and Wei Tsang Ooi, In Proceedings of the International Workshop on Social, Adaptive, and Personalized Multimedia Interaction and Access (SAPMIA'10), Florence, Italy, 29 October 2010.
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Supporting Zoomable Video Streams via Dynamic Region-of-Interest Cropping

Ngo Quang Minh Khiem*, Guntur Ravindra*, Axel Carlier*, and Wei Tsang Ooi, In Proceedings of the 1st ACM Multimedia Systems Conference (MMSYS'10), Scottsdale, AZ, 22-23 February 2010, 259-270.
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