VERFAHREN UND VORRICHTUNG ZUR STEUERUNG VON RATE-VERZERRUNG-OPTIMIERUNG MIT LAGRANGE MULTIPLIZIERER UND VISUELLER MASKE

摘要

A method and computer readable medium storing a computer program for controlling bit rate for encoding of a plurality of video pictures, the method comprising:
setting a first quantizer value as a specified quantizer value for encoding at least one video picture, said first quantizer value associated with a Lagrange multiplier value;
computing a visual mask value for said at least one video picture, said visual mask value defining a visibility of encoding noise for at least said one video picture;
when the visual mask value multiplied by the Lagrange multiplier value satisfies a Lagrange multiplier threshold value, setting a second quantizer value as the specified quantizer value used for encoding said at least one video picture; and
encoding at least one video picture based on the specified quantizer value.