Multimedia Communication and Networking, Information Theory, Optimization.

Wen Ji, Professor, Institute of Computing Technology, Chinese Academy of Sciences, P.R. China Email: jiwen@ict.ac.cn Telephone: +86-10-62600867 Address: Research Center for Ubiquitous Computing Systems, Institute of Computing Technology, Chinese Academy of Sciences, No.6 Kexueyuan South Road, Zhongguancun, Haidian District, Beijing, China. Postcode: 100190

Selected Journal Articles

[J1] Wen Ji, Xiangyang Ji, and Yiqiang Chen, "Feedback-Free Binning Design for Mobile Wyner-Ziv Video Coding: An Operational Duality between Source Distortion and Channel Capacity", IEEE Transactions on Mobile Computing, to be published.

[J2] Wen Ji, Yingying Chen, Min Chen, Bo-Wei Chen, Yiqiang Chen, and Sun-Yuan Kung, "Profit Maximization through Online Advertising Scheduling for a Wireless Video Broadcast Network", IEEE Transactions on Mobile Computing, vol. 15, No. 8, pp.2064-2079, Aug. 2016. 

[J3] Wen Ji, Bo-Wei Chen, Xiangdong Wang, Haiyong Luo, Mucheol Kim, and Yiqiang Chen, "Cross-Layer Opportunistic Scheduling for Device-to-Device Video Multicast Services", ACM Transactions on Embedded Computing Systems, vol. 15, No. 2, pp.37:1-37:18, Feb. 2016.

[J4] Wen Ji, Bo-Wei Chen, Yiqiang Chen, and Sun-Yuan Kung, " Profit Improvement in Wireless Video Broadcasting System: A Marginal Principle Approach", IEEE Transactions on Mobile Computing, vol. 14, No. 8, pp.1659-1671, Aug. 2015.

[J5] Wen Ji, Pascal Frossard, Bo-Wei Chen, and Yiqiang Chen, "Profit Optimization for Wireless Video Broadcasting Systems Based on Polymatroidal Analysis", IEEE Transactions on Multimedia​, vol. 17, No. 12, pp.2310-2327, Dec. 2015.  

[J6] Wen Ji, Pascal Frossard, and Yiqiang Chen, "EXIT-based Side Information Refinement in Wyner-Ziv Video Coding", IEEE Transactions on Circuits and Systems for Video Technology, vol. 24, No. 1, pp.141-156, Jan. 2014. 

[J7] Wen Ji, Zhu Li, and Yiqiang Chen, "Joint Source-Channel Coding and Optimization for Layered Video Broadcasting to Heterogeneous Devices", IEEE Transactions on Multimedia, vol. 14, No. 2, pp.443-455, Apr. 2012. 

[J8] Wen Ji, Jiangchuan Liu, Min Chen, and Yiqiang Chen, "Power-Efficient Video Encoding on Resource-Limited Systems: A Game-Theoretic Approach", Future Generation Computer Systems, vol. 28, no.2, pp.427-436, Feb. 2012.

[J9] Wen Ji, Min Chen, JongHyuk Park, Naixue. Xiong, and Yiqiang Chen, "Distributed Video Coding: An Overview of Basics, Research Issues and Solutions", International Journal of AD Hoc and Ubiquitous Computing, vol. 9, No. 4, pp.258-271, May. 2012.

[J10] Wen Ji, Min Chen, Xiaohu Ge, Peng Li, and Yiqiang Chen, "A Perceptual Macroblock Layer Power Control for Energy Scalable Video Encoder Based on Just Noticeable Distortion Principle", Journal of Network and Computer Applications, vol. 34, no. 5, pp. 1489-1497, Sept, 2011. 

[J11] Wen Ji, Min Chen, Xiaohu Ge, Peng Li, and Yiqiang Chen, "ESVD: An Integrated Energy Scalable Framework for Low Power Video Decoding Systems", EURASIP Journal on Wireless Communications and Networking, doi:10.1155/2010/234131.

Selected Conference Papers

[C1] Wen Ji, and Yiqiang Chen, "A Binning Design for Wyner-Ziv Video Coding", Data Compression Conference (DCC), pp.498, 2013. 

[C2] Wen Ji, Zhu Li, and Yiqiang Chen, "QoE-based Opportunistic Transmission for Video Broadcasting in Heterogeneous Circumstance", ACM Multimedia (ACM-MM), pp.1029-1032, 2012. 

[C3] Wen Ji, Pascal Frossard, and Yiqiang Chen, "EXIT Chart-Based Side Information Refinement for Wyner-Ziv Video Coding", Data Compression Conference (DCC), pp.209-218, 2012.

[C4] Wen Ji, and Zhu Li, "Heterogeneous QoS Video Broadcasting with Optimal Joint Layered Video and Digital Fountain Coding", IEEE International Conference on Communications (ICC), pp.1-6, 2011.

[C5] Wen Ji, Zhu Li, and Yiqiang Chen, "Content-Aware Utility-Fair Video Streaming in Wireless Broadcasting Networks", IEEE International Conference on Image Processing (ICIP),pp.145-148 2011. 

[C6] Wen Ji, Zhu Li, and Yiqiang Chen, "Joint Scalable Video and Digital Fountain Coding for Heterogeneous QoS Video Broadcasting", IEEE International Conference on Multimedia and Expo (ICME), pp.1-6, 2011. 

[C7] Wen Ji, and Zhu Li, "Joint Layered Video and Digital Fountain Coding for Multi-Channel Video Broadcasting", ACM Multimedia (ACM-MM), pp.1223-1226, 2010.

Selected Other Papers

[S1]  Meiyu Huang, Yiqiang Chen, Wen Ji, Chunyan Miao, "Accurate and Robust Moving-Object Segmentation for Telepresence Systems", ACM Transactions on Intelligent Systems and Technology, vol. 6, no.2, pp.17:1-17:28, Apr. 2015.
[S2]  Meiyu Huang, Yiqiang Chen, Linglin Yin, and Wen Ji, "Ti-Photograph: A Tele-immersive Photograph System for Distributed Parents and Children", ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp), pp. 259-262, 2013.
[S3]  Chao Chen, Wen Ji, Min Chen, and Yiqiang Chen, "Modeling the Hybrid Temporal and Spatial Resolutions Effect for Web Video Quality Evaluation", IEEE Global Communications Conference, (GLOBECOM), 2013.
[S4]  Meiyu Huang, Yiqiang Chen, Linglin Yin, and Wen Ji, "TiPS: A lightweight Tele-immersive Photograph System", IEEE International Conference on Multimedia and Expo (ICME), pp.1-6, 2013.  
[S5] Peng Li, Yiqiang Chen and Wen Ji, "Rate-distortion-complexity Analysis on AVS Encoder", IEEE Pacific Rim Conference on Multimedia, (PCM), pp.73-83, 2010.

Patents

[P1] Wen Ji, Yiqiang Chen, "Method and Device for Feed-back Free Distributed Video Coding", Patent No. CN102857761B. Chinese.
[P2] Wen Ji, Yiqiang Chen, "Method and Device for Rate Optimization in Feed-back Free Distributed Video Coding", Patent No. CN102857760B. Chinese.
[P3] Wen Ji, Dongrui, Fan, Yiqiang Chen, Huiguo Zhang, Yunbing Xing, "Method and Device for Parallel Video Encoding", Patent No. ZL201010288777.4. Chinese.
[P4] Wen Ji, Yiqiang Chen, Huiguo Zhang, Lei Chen, Yunbing Xing, "Method and Device for Power Scale Video Decoding ", Patent No. ZL200810114268.2. Chinese.
[P5] Wen Ji, Yiqiang Chen, "Method and Device for Video Encoding in Multi-Core Processor", Patent No. ZL200810104205.9. Chinese.
[P6] Wen Ji, Yiqiang Chen, Huiguo Zhang, Yunbing Xing, "Method and Device for Frequency Adjusting Video Decoding", Patent No. ZL200810247439.9. Chinese.
[P7] Wen Ji, Yiqiang Chen, "Method and Device for Puncturing Low density Parity Check Codes", Patent No. ZL200810057536.1. Chinese.
[P8] Wen Ji, Yiqiang Chen, "Method for Fast Intra Mode Decision in Video Encoding", Patent No. ZL200810104103.7. Chinese.
[P9] Linglin Yin, Yiqiang Chen, Wen Ji, "Method for Eye Gaze Interaction in Video Conference", Patent No. CN103034330B Chinese.
[P10] Huiguo Zhang, Yiqiang Chen, Wen Ji, Bo Tang, "Searching Method Using Hierarchical Block Motion Vectors in Motion Estimation", Patent No. ZL200810105462.4. Chinese.
[P11] Yunbing Xing, Yiqiang Chen, Wen Ji, Huiguo Zhang , "Method for Motion Vector Computation in AVS codec", Patent No. ZL201010110939.5. Chinese.
[P12] Lei Chen, Yiqiang Chen, Wen Ji, Huiguo Zhang, "Method and Device for Computational Complexity Adjusting Video Decoding", Patent No. ZL200810118099.X. Chinese.
[P13] Huang Qiang, Yiqiang Chen, Wen Ji, "Method for Video Synopsis", Patent No. ZL200810104584.1. Chinese.

Video communication & networking, video coding and transmission, channel coding, distributed video/source coding, information theory, optimization, network economics, social media, pervasive computing, and green computing.