A semi-fragile digital watermarking algorithm for 2D vector graphics tamper localization
A semi-fragile digital watermarking algorithm resisting affine transformation based on 2D vector graphics was designed for tamper localization. We divide graphics vertices after extraction, and then transform the construction of 8 × 8 matrix by DCT; authentication watermark is generated by the relationship between the DCT coefficients, and then embedded in the middle frequency region of the coefficients; pre-processing is proposed to eliminate geometric distortion before detecting. High invisibility, robust against common geometrical distortions (e.g. translation, rotation and scaling) and good capability of tamper localization have been proved by experimental results.
2D vector graphics semi-fragile watermarking DCT affine transformation tamper localizatio Introduction
Han-ling ZHANG Ming-ming GAO
College of Computer and Communication Hunan University Changsha, China
国际会议
武汉
英文
549-552
2009-11-18（万方平台首次上网日期，不代表论文的发表时间）