European Collaboration on Picture Coding Research for 2 Mbit/s Transmission

COST 211-a European collaborative research project in redundancy reduction techniques for visual telephone signals-has involved laboratories in Belgium, France, Holland, Italy, Sweden, the United Kingdom, and West Germany since 1977. A broad review is offered of progress made in the empirical optimization of conditional replenishment coding and the parallel development of subjective test and computer simulation techniques with which to assess this and other picture coding methods. An international network of 2 Mbit/s transmission is provided by the European satellite OTS and interest is being generated in further collaboration for a European Videoconference Experiment under the auspices of the CEPT.