An Improved Software Watermarking Scheme Based on PPCT Encoding
Jianyun Chen, Shenghui Dai, Jianfeng Chen · 2016
In this paper a new dynamic graph encoding scheme based on hybrid encoding between radix-k encoding enumeration, permutation graph coding and PPCT encoding enumeration is proposed for improving the low efficiency of PPCT dynamic graph encoding. In order to improve the efficiency of PPCT, the method that the pointer of circular linked list is used to encode the coefficients in radix-k encoding enumeration to PPCT encoding enumeration is applied. On the SandMark experimental platform, the data rate and robustness of the watermark are increased without affecting the PPCT data structure and its anti attack.