An investigation into the requirements for an efficient image transmission system over an ATM network

This thesis looks into the problems arising in an image transmission system when transmitting over an A TM network. Two main areas were investigated: (i) an alternative coding technique to reduce the bit rate required; and (ii) concealment of errors due to cell loss, with emphasis on processing in the transform domain of DCT-based images. [Continues.

Error concealment algorithms for an ATM videoconferencing system

The paper describes videoconferencing workstation using ATM for the transmission of all data and Motion-JPEG for compression of the video. Of particular interest is the work on algorithms to help conceal the errors that arise from transmission over an ATM network. Several methods are discussed and the results of some subjective assessments of typical images are presente