using video object coding

(Video) Object MPEG-4 object, i.e. a region of the image with arbitrary shape Alpha-plane A discrete bitmap (generally binary) defining the part of a frame constituting a given object, e.g. in terms of the position of the pixels belonging to the object or in terms of the position of the blocks covering the object. Sprite sprites A unified background image derived by compositing the backgrounds of the single frames of a video sequence, e.g. having a camera motion throughout a video segment (within e.g. a scene, a shot, a GOP, a sequence). It may be static or dynamic. Scene description coding The coded representation of the spatiotemporal positioning of audio-visual objects as well as their behaviour in response to interaction, as e.g. in the standard MPEG-4 Part 11. Synthetic/natural hybrid coding Part of the MPEG-4 standard relating to coding facial animation and mesh compression. Synthetic picture component A picture component that is coded by geometric modelling with synthesizing at reconstruction (e.g. avatar). Natural picture component natural picture components A picture component that is coded "as it stands" without geometric modelling.