John Apostolopoulos

Contact information

John Apostolopoulos
Hewlett-Packard Laboratories
1501 Page Mill Rd. M/S 1181
Palo Alto, CA 94304

japos AT hpl.hp.com
Tel: 650.857.4416
Fax: 650.852.3791

Professional Activities

• Director, Multimedia Communications and Networking Lab, HP Labs
• Distinguished Technologist, HP Labs
• Consulting Associate Professor, Electrical Engineering Department, Stanford University
• Chair, IEEE Image and Multidimensional Digital Signal Processing (IMDSP) Technical Committee
• Previously R&D Manager, Streaming Media Systems Group, HP Labs
• HP's primary representative to MPEG, and significant contributions to ISO/IEC JPEG-2000 Security (JPSEC).

Research Interests

Primary research interests include improving the reliability, fidelity, scalability and security of media communication over packet networks; the design of mobile streaming media content delivery networks (MSM-CDNs), that is infrastructure design which can scale to support media delivery to large numbers of mobile clients; and video signal processing.

• Reliable video communication over wired and wireless packet networks
  • Error-resilient video compression
  • Multiple description video coding
  • Path diversity for improved media streaming
  • Understanding and overcoming packet loss and error propagation
  • Media-aware FEC
  • Co-design of source coding, channel coding, and networking
• Secure media communications
  • Secure media streaming
  • Secure transcoding, i.e., transcoding or adaptation without requiring decryption
  • Secure adaptive streaming
  • Authentication for streaming media
  • JPEG-2000 Security (JPSEC) standard
• Streaming media content delivery networks (SM-CDN's) (joint work with the HP Labs Stream Team)
  • Streaming media CDN infrastructure design
  • Rate-distortion (R-D) optimized video streaming
  • Design of R-D Hint Tracks for low-complexity R-D optimized streaming
  • Multimedia networking
  • Multimedia caching strategies
• Wireless video
  • Low-latency video over 802.11 wireless networks using path diversity from multiple access points
  • Interlayer optimization for improved media delivery
  • End-to-end wireless video communication system design (e.g., video over 3G/3.5G/4G wireless networks)
  • Secure, scalable, video streaming and transcoding for wireless (joint work with Susie Wee)
• Video compression
  • Frame-based (e.g. H.264/MPEG-4 AVC) and object-based (e.g. MPEG-4) video coding
  • Scalable/layered coding and MC-wavelet coding, e.g., Scalable Video Coding (SVC)
  • Video transcoding
• Video signal processing

Recent Professional Service

• Technical co-chair, IEEE International Conference on Image Processing (ICIP'2007)
• Chair, IEEE Image and Multidimensional Digital Signal Processing (IMDSP) Technical Committee
• Member, IEEE Multimedia Signal Processing (MMSP) Technical Committee
• Editorial Board, IEEE Signal Processing Magazine
• Recent calls for papers for special issues (and associated final issues when ready):
  • Special issue of IEEE Network Magazine on "Multimedia over Broadband Wireless Networks", March 2006.
  • Special issue on "Network-Aware Multimedia Processing and Communications" in (new) IEEE Journal on Selected Topics in Signal Processing, August 2007.

Teaching

• Stanford University
  • Digital Video Processing (EE392J), Winter quarter, 2007.
  • Digital Video Processing (EE392J), Winter quarter, 2004.
  • Digital Video Processing (EE392J), Winter quarter, 2002.
  • "Special Studies and Reports in EE" (EE391), Winter quarter, 2001.
  • Digital Video Processing (EE392J), Winter 2000.
• MIT
  • "Video Compression and Video Streaming" lectures within Two-Dimensional Signal and Image Processing (EECS 6.344), Spring 2008.
  • "Video Compression and Video Streaming" lectures within Two-Dimensional Signal and Image Processing (EECS 6.344), Spring 2006.
  • "Video Compression and Video Streaming" lectures within Two-Dimensional Signal and Image Processing (EECS 6.344), Spring 2005.
  • Video Compression and Video Streaming lectures within Two-Dimensional Signal and Image Processing (EECS 6.344), Spring 2004.
  • Image & Video Compression and Video Streaming lectures within Two-Dimensional Signal and Image Processing (EECS 6.344), Spring 2002.
  • Video Compression and Video Streaming lectures within Two-Dimensional Signal and Image Processing (EECS 6.344), Spring 2001.

Serving on Ph.D. thesis committees