Embedding information on search-order codes of VQ indices by rearranging the indicators

The purpose of this paper is to embed information on codes when using search-order coding (SOC) to compress index table. The proposed method reassigned the shorter indicators to the indices that can be transformed to SOC codes and those that can not be transformed are assigned by the other indicators. If the cover image is a smooth image, the proposed method can significantly reduce the size of compression code. Moreover, the size of the compression code is only related to the cover image not to the information in the proposed method. This improves the security of the compression code. According to the experimental results, the proposed method has better performance comparing with the related methods.