This thesis looks into the problems arising in video image transmission when transmitting over a wireless environment. The main problems faced by future visual communication systems are multi-resolution video transmission, error resiliance and compatibility with existing coding standards. Two main areas were investigated in this thesis. The first area focused on subband decompostion, where a comprehensive comparison of various subband filters were carried out. The other area centred around subband coding and modelling, where various subband models were implemented. [Continues.]