Scalable video coding of video image signal involves quantising transformation signal at different quality levels in coding branches, entropy coding, feeding back transformation signal in one branch

摘要

The method involves determining a prediction error signal (P) from the difference of an input signal (X) and a prediction signal, determining a transformation signal (P'), feeding the transformation signal to a number of coding branches (1-3) with encoders in which it is quantised at different quality levels and carrying out entropy coding (EC1-EC3). A transformation signal in a defined branch is fed back after quantisation. Independent claims are also included for the following: (a) a method of decoding a signal coded in accordance with the inventive method (b) a device for scalable video coding of a video image signal (c) a decoding device (d) and a codec for scaleable video coding and decoding.