Look-ahead coding considering rate/distortion-optimization

A new approach to combine R/D-optimization and lookahead coding is proposed. The dependent-R/D idea has been applied to blocks with no coded coefficients. This is an important case at low bit rates and whenever the motion model, which is used in virtually all modern video coders, fits accurately enough. The requirement of the motion model´s applicability suggests the necessity to include spatial or temporal aliasing reducing filtering to support the proposed strategy.