Wai Chu

Title: Innovations of Wai Chu in Watermarking Technology

Introduction

Wai Chu is an accomplished inventor based in Fremont, CA. He has made significant contributions to the field of watermarking technology, particularly through his innovative methods for embedding watermarks into digital content. His work is characterized by a focus on security and efficiency.

Latest Patents

Wai Chu holds a patent for "Secure oblivious watermarking using key-dependent mapping functions." This patent describes a method for embedding a watermark into content that includes several steps. The process begins with receiving the content and creating a continuous watermark sequence. For each content sample, the method involves calculating a sample mean, calculating a sample variance, and normalizing the content. Further steps include generating content coefficients and watermark coefficients, embedding the watermark by adjusting the amplitude of the watermark coefficients, and outputting the content. The use of key-dependent random sequences to control the mapping functions enhances the protection of the watermarks.

Career Highlights

Wai Chu is currently associated with Digital Video Express, L.P., where he continues to develop innovative solutions in digital content protection. His expertise in watermarking technology has positioned him as a key player in the industry.

Collaborations

Wai Chu has collaborated with Siu-Leong Iu, contributing to advancements in watermarking techniques and enhancing the security of digital content.

Conclusion

Wai Chu's contributions to watermarking technology demonstrate his commitment to innovation and security in digital content. His patent reflects a significant advancement in the field, showcasing his expertise and dedication to protecting digital media.