This inventor holds 3 USPTO granted patents. Top assignee: STMicroelectronics. Active years: 2007-2008.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2007-2008
Title: Guillaume Petitjean: Video and Iris-Image Processing Inventor.
Introduction
Guillaume Petitjean is an inventor associated with Trets, France, and STMicroelectronics. His patent work includes methods for assessing iris-image definition and embedding binary messages in video sequences. He is credited with 3 patents.
Latest Patents
One of Petitjean’s patents concerns evaluating the definition of an eye-iris image. The method approximately locates the pupil, establishes an examination window centered on that position, and accumulates gradients from pixel luminance values within the window. The resulting total is proportional to the image’s definition score.
Another patent describes inserting binary messages into video pictures. It marks selected macroblocks in a motion-compensated compressed video sequence, focusing on macroblocks whose motion vectors exceed a predetermined threshold.
Career Highlights
Petitjean’s listed inventions address image analysis and digital-video processing. His work connects image-quality evaluation with techniques for marking compressed video data.
Collaborations
His listed coworkers include Christel-Loïc Tisse and Laurent Plaza. Petitjean is associated with STMicroelectronics.
Conclusion
Guillaume Petitjean’s patent portfolio reflects contributions to iris-image evaluation and binary message insertion in video, within the broader field of digital image processing.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile