Heyan Wang

Title: Innovations of Heyan Wang in Watermarking Technology

Introduction

Heyan Wang is a notable inventor based in Baoding, China, recognized for his contributions to watermarking technology. With a total of two patents, he has developed innovative methods that enhance data security and copyright protection in high-definition mapping and trajectory data.

Latest Patents

One of his latest patents is a watermarking method for high-definition maps based on invisible characters. This method establishes mapping relations between invisible characters and bit characters, space characters, and decimal digits. It combines watermark characters with their corresponding positions, adds Hamming code into a watermark character sequence, and converts this sequence into invisible characters to create a composite watermark character sequence. The method ensures that watermark embedding and detection can be achieved without altering data availability and maintaining high accuracy.

Another significant patent involves the generation and detection of zero watermarking for trajectory data. This method divides a trajectory based on a coordinate system constructed from trajectory feature points into blocks. It utilizes moment invariants of the trajectory in each block to construct a watermark sequence, providing copyright protection without modifying the trajectory data. The method is robust against common attacks, ensuring strong stability and resistance to various types of threats.

Career Highlights

Heyan Wang is affiliated with Nanjing Normal University, where he continues to advance his research in watermarking technologies. His work has significant implications for industries that rely on high-definition mapping and trajectory data management.

Collaborations

He collaborates with notable colleagues, including Na Ren and Changqing Zhu, contributing to the advancement of watermarking techniques and their applications.

Conclusion

Heyan Wang's innovative patents in watermarking technology demonstrate his commitment to enhancing data security and copyright protection. His contributions are vital in the evolving landscape of digital data management.