Video Communication Technologies

Course Description

Overview of video communication systems and services. Scanning process, conversion of optical images into video signal. Conventional scanning standards, resolution concept, spectrum of video signal. Composite and component video signal. Characteristics of human visual system, color matching functions, chromaticity diagram. Chrominance signal. Audio carrier. Analog-to-digital conversion, composite and component digital video standards. Video signal compression methods, compression standards, transport stream formatting and multiplexing. Error resilience video coding techniques, error detection, correction and concealment. Broadcasting standards and frequency ranges. Television broadcasting systems, satellite and cable television. Video streaming over Internet, IPTV. Delivery of television signal to mobile receivers.

General Competencies

Deep understanding of video processing methods with applications to analog and digital television, Internet TV and mobile TV. Ability to develop and implement video based services in different communication systems. Ability to plan, design, implement, analyze, maintain and modify video communication systems.

Learning Outcomes

  1. define video signal properties
  2. predict effects of interlaced and progressive scanning on image quality and occupied bandwidth
  3. compare formats for subsampling of chrominance components
  4. analyze the influence of sampling rate and quantization parameters on image quality and bit rate
  5. relate human visual system characteristics and building blocks of video signal compression system
  6. apply video compression techniques in different types of communication systems
  7. identify quality of service parameters in different types of video communication systems and predict their influence on image quality

Forms of Teaching

Lectures

--

Exams

--

Experimental Exercises

--

Internship visits

--

Grading Method

Continuous Assessment Exam
Type Threshold Percent of Grade Comment: Percent of Grade
Homeworks 0 % 10 % 0 % 10 %
Attendance 0 % 10 % 0 % 10 %
Mid Term Exam: Written 0 % 30 % 0 %
Final Exam: Written 0 % 50 %
Exam: Written 0 % 60 %
Exam: Oral 20 %

Week by Week Schedule

  1. Overview of video communication systems and services. Scanning process, video signal generation. Scanning parameters: number of lines per frame, horizontal frequency, number of frames per second.
  2. Interlaced scanning, vertical frequency. Spectrum of video signal, video baseband bandwidth. Horizontal and vertical resolution. Transmission standards and constraints, standard definition television (SDTV) and high definition television (HDTV).
  3. Primary color signals, color-difference signals. Chrominance signal, color subcarrier, vector diagram of chrominance signal components. Choice of chrominance subcarrier frequency. Composite video signal, coding and decoding.
  4. High-definition television, scanning parameters, number of lines per frame, frame rate, bandwidth. Colorimetric characteristics. Production, distribution and display formats, HDTV format conversions.
  5. Analog-to-digital conversion, choice of sampling rate and quantization parameters. Chrominance subsampling, digital video formats for different applications.
  6. Bit-parallel and bit-serial video signal transmission. Parameters of Serial Digital Interface for SDTV and HDTV. Bit rates, transmission distances, measurements of signal quality.
  7. Intra-frame and inter-frame video signal compression, transform coding, motion estimation and compensation, motion vectors, entropy coding. Scalable coding.
  8. Mid-term exam.
  9. I-frame generation, compression ratio and picture quality management. P-frame and B-frame generation, processing delay in encoding and decoding. Group of picture structure, bit-rates and picture quality. Profiles and levels.
  10. Program and transport stream formatting and multiplexing, jitter and BER influences on decoding process, coder/decoder synchronization.
  11. Very-low bit-rate coding, advances in video compression systems: intra-frame prediction, segmentation-based and object-based coding, advanced motion compensation prediction, CAVLC/CABAC.
  12. Video coding standards. Examples of video communication services, quality of service parameters. Types of errors in video communication systems, spatial and temporal error propagation, impact of errors on picture quality.
  13. Television broadcasting systems, frequency ranges, services. Terrestrial, satellite and cable television. Planning criteria for television broadcasting systems.
  14. Overview of mobile television systems. Reception conditions in mobile channel. DVB-H system parameters. Techniques for power savings in mobile device. Hybrid satellite/terrestrial system (DVB-SH).
  15. Internet television and IPTV. Video streaming and delivery over IP networks. Architecture of IPTV system, services, protocols, rate control, video coding parameters. Quality of Service (QoS) parameters.

Study Programmes

Information Processing -> Information and Communication Technology (Profile)

Wireless Technologies -> Information and Communication Technology (Profile)

Literature

Y. Wang, J. Ostermann, Y. Zhang (2001.), Video Processing and Communications, Prentice Hall
M. Robin, M. Poulin (2000.), Digital Television Fundamentals, McGraw-Hill
A.H. Sadka (2002.), Compressed Video Communications, Wiley
L. Hanzo, P. Cherriman, J. Streit (2007.), Video Compression and Communications: From Basics to H.261, H.263, H.264, MPEG4 for DVB and HSDPA-Style Adaptive Turbo-Transceivers, Wiley-IEEE Press
I. E. Richardson (2010.), The H.264 Advanced Video Compression Standard, Wiley

Lecturers in Charge