METHOD AND ARRANGEMENT FOR ENCODING TRANSFORMATION COEFFICIENTS IN IMAGE AND/OR VIDEO ENCODERS AND DECODERS, CORRESPONDING COMPUTER PROGRAM, AND CORRESPONDING COMPUTER-READABLE STORAGE MEDIUM

摘要

A first one-bit symbol (CBP4) is transmitted for each block of transformation coefficients. If the CBP4 shows that a corresponding block contains significant coefficients, a significance image is encoded as a result of the transmission of a one-bit symbol (SIG) for each coefficient in a scan sequence. If a corresponding significance symbol is 'one', then a further one-bit symbol (LAST) is transmitted to show whether a present significant coefficient is a last coefficient within a block or whether further significant coefficients are following. Positions of significant transformation coefficients contained in a block are determined and encoded for each block in a first scanning process, followed by a second scanning process carried out in reverse order. Independent claims are also included for the following: (a) A structure with a processor/chip set up to carry out the method of the present invention; (b) and for a computer program for carrying out the method of the present invention when loaded; (c) and for a computer-readable memory medium for storing a program to carry out the method of the present invention; (d) and for a method for downloading a computer program e.g. from the Internet onto a data-processing device linked to a data network.