Patent ID: 6310919
Filing Date: 2001-10-30
Classification: G06T,H04N

Abstract:
A method for adapting motion vector information to a scaling factor associated with scaled pixel block reference information, said method comprising the steps of:identifying an encoding mode of a predicted pixel block;scaling, using said scaling factor, a horizontal displacement parameter of each motion vector associated with said predicted pixel block; andin the case of a field prediction encoding mode including an inter-field motion vector prediction:imparting, to a vertical displacement parameter of said motion vector associated with said predicted pixel block, a first offset;scaling, using said scaling factor, said offset vertical displacement parameter; andimparting, to said scaled offset vertical displacement parameter, a second offset, wherein: if said inter-field motion vector prediction comprisesa top field prediction into a bottom field, said first offset comprises a positive offset; andif said inter-field motion vector prediction comprises a bottom field prediction into a top field, said first offset comprises a negative offset.