This inventor holds 15 USPTO granted patents. Top assignees: At+t Corp., Lucent Technologies Inc., American Telephone and Telegraph Corporation. Active years: 1996-2002.
Location History:
- Middletown, NJ (US) (1996 - 2002)
- Pittsburgh, PA (US) (2002)
Company Filing History:
10 out of 4,208 
3 out of 9,364 
1 out of 7 Years Active: 1996-2002
Title: The Innovative Contributions of Tsuhan Chen
Introduction
Tsuhan Chen is a notable inventor based in Middletown, NJ (US), recognized for his significant contributions to video technology. With a total of 15 patents to his name, Chen has developed innovative techniques that enhance video processing and analysis.
Latest Patents
One of Chen's latest patents is titled "Chroma-key for efficient and low complexity shape representation of coded arbitrary video objects." This technique involves implicitly encoding shape information using a chroma-key color. A bounding box is created to enclose the video object, which is then extended to the next integer multiple of macroblock size and divided into several macroblocks. For each boundary macroblock, pixels outside the object are replaced with the chroma-key color to encode shape information. The pixel data for boundary macroblocks and those inside the object undergo DCT transformation, scaling, and motion compensation. A finer quantizer is utilized for boundary macroblocks to enhance image quality. The system employs a first_shape_code to identify each macroblock's position relative to the object, improving data compression and enabling low complexity shape extraction.
Another significant patent by Chen is focused on "Frame synchronization in a multi-camera system." This technique calculates time offsets between different video cameras and re-synchronizes captured frames in a post-processing manner. This innovation eliminates the need for a common clock for synchronization, allowing for effective frame synchronization from multiple cameras, which enhances the accuracy of subject analysis.
Career Highlights
Throughout his career, Tsuhan Chen has worked with prominent companies such as AT&T Corp. and Lucent Technologies Inc. His experience in these organizations has contributed to his expertise in video technology and innovation.
Collaborations
Chen has collaborated with notable individuals in his field, including Cassandra Turner Swain and Barin Geoffry Haskell. These collaborations have likely enriched his work and led to further advancements in his projects.
Conclusion
Tsuhan Chen's innovative patents and contributions to video technology demonstrate his significant impact on the field. His work continues to influence advancements in video processing and analysis, showcasing the importance of innovation in technology.