| 摘要 |
PROBLEM TO BE SOLVED: To provide methods for determining watermarking data, performing the watermarking, and processing watermarked data.SOLUTION: A method watermarks an AVC bitstream that uses CAVLC entropy coding. The watermarking data may be determined in a pre-processing stage and stored for later use in watermarking a bitstream. One method accesses (810) variable-length encoded data including an encoding of information identifying an actual reference used to predictively encode an image. The encoding of the information has a particular value. The method determines (830) an alternative value, which is different from the particular information and thus is an encoding of alternative information that identifies a different reference from the actual reference. The alternative value is for use in watermarking the variable-length encoded data. |
