Xi Liu

Title: Innovations of Xi Liu in Watermarking Technologies

Introduction

Xi Liu is an accomplished inventor based in Changsha, China. He has made significant contributions to the field of watermarking information security technologies. His innovative approach addresses critical challenges in the protection of Building Information Modeling (BIM) data.

Latest Patents

Xi Liu holds a patent for a "Zero-watermarking method and device for BIM data." This invention provides a unique solution to the limitations of existing zero-watermarking methods, which are vulnerable to primitive attacks. The method constructs a mapping relationship between primitive clusters and watermarking bits, utilizing the vertical stability of a model. By calculating norms of primitives within each cluster, the method employs the positivity and negativity of norm skewness measurements as eigenvalues to create a binary sequence. An XOR process is then performed on this binary sequence and the original watermarking sequence to establish the zero-watermarking for BIM data. Experimental results demonstrate that this method possesses uniqueness, robustness, and security.

Career Highlights

Throughout his career, Xi Liu has worked with notable organizations, including the Third Surveying and Mapping Institute of Hunan Province and Nanjing Normal University. His experience in these institutions has allowed him to refine his expertise in watermarking technologies and contribute to advancements in the field.

Collaborations

Xi Liu has collaborated with several professionals, including Xingxiang Jiang and Qianwen Zhou. Their combined efforts have furthered research and development in watermarking methods and information security.

Conclusion

Xi Liu's innovative contributions to watermarking technologies, particularly in the context of BIM data, highlight his role as a leading inventor in this field. His patented methods offer robust solutions to enhance information security, showcasing the importance of innovation in technology.