Location History:
- Wappingers Falls, NY (US) (1999 - 2003)
- Ossining, NY (US) (2003 - 2005)
Company Filing History:
3 out of 21,384 
1 out of 838 
1 out of 14,087 
Years Active: 1999-2005
Title: Innovations of Inventor Haiyan He
Introduction
Haiyan He is a notable inventor based in Wappingers Falls, NY (US). He has made significant contributions to the field of image processing, holding a total of 5 patents. His work focuses on enhancing image quality and edge detection techniques.
Latest Patents
One of his latest patents is a method and apparatus for edge detection. This technique combines a low-pass second derivative of an image signal, a low-pass first derivative of the image signal, and an estimation of edge frequency. The edge frequency estimation is based on a ratio of a third to a first low-pass derivative of the image signal, with the image signal preferably being a luminance signal. Another significant patent is a method and apparatus for improving conversion from SD to HDTV. This patent describes an image enhancement achieved by a combination of linear and non-linear techniques. The linear technique is primarily peaking, while the non-linear technique is preferably LTI, which is applied to edge areas of the image.
Career Highlights
Throughout his career, Haiyan He has worked with prominent companies such as Koninklijke Philips Corporation N.V. and Philips Electronics North America Corporation. His experience in these organizations has allowed him to develop and refine his innovative techniques in image processing.
Collaborations
Some of his notable coworkers include Johan Gerard Willem Maria Janssen and Johan Gerard Janssen. Their collaboration has contributed to advancements in the field of image technology.
Conclusion
Haiyan He is a distinguished inventor whose work in image processing has led to several important patents. His innovative techniques continue to influence the industry and enhance image quality.