Company Filing History:
Years Active: 1991-1994
Title: Innovations of Tsuen-Hsi Liu
Introduction
Tsuen-Hsi Liu is a notable inventor based in Northridge, CA (US). He has made significant contributions to the field of optical correlators, holding a total of 3 patents. His work focuses on enhancing motion detection and image processing technologies.
Latest Patents
One of his latest patents is the "Motion-sensitive optical correlator using a VanderLugt Correlator." This innovative optical correlator performs motion detection or background clutter suppression and correlation simultaneously in a single photorefractive crystal. It is particularly useful for moving target identification and tracking, as well as for stationary clutter rejection. The correlation is of the VanderLugt type, and the motion detection or background clutter suppression is based on the erasing property of photorefractive crystals.
Another significant patent is the "Real-time edge-enhanced optical correlator." This invention enhances the edges of an input image by four-wave mixing a first write beam with a second write beam in a photorefractive crystal, such as GaAs. The edge enhancement is achieved for VanderLugt optical correlation with an edge-enhanced reference image by optimizing the power ratio of the second write beam to the first write beam, for example, 70:1. Additionally, the power ratio of a read beam, which carries the reference image to the first write beam, is optimized, for instance, 100:701. Liquid crystal TV panels are employed as spatial light modulators to change the input and reference images in real time.
Career Highlights
Tsuen-Hsi Liu works for the United States of America as represented by the Administrator. His innovative work has led to advancements in optical technology, particularly in motion detection and image processing.
Collaborations
He has collaborated with notable coworkers, including Li-Jen Cheng Cheng and Tien-Hsin Chao, contributing to the development of cutting-edge optical technologies.
Conclusion
Tsuen-Hsi Liu's contributions to the field of optical correlators demonstrate his innovative spirit and dedication to advancing technology. His patents reflect significant advancements in motion detection and image processing, showcasing his impact on the industry.
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