Johannes Hjm Van Rooij

Title: Innovations of Johannes Hjm Van Rooij

Introduction

Johannes Hjm Van Rooij is a notable inventor based in Breda, Netherlands. He has made significant contributions to the field of image processing and video signal technology. With a total of 3 patents, his work has had a considerable impact on the industry.

Latest Patents

One of his latest patents is related to flare compensation. This innovation enhances the flare compensation range of a camera by measuring and averaging a substrate or drain current that represents the amount of charge elements generated in an image sensor. This measurement is subsequently subtracted from the output signal of the image sensor, leading to improved image quality. Another significant patent is for adaptive video signal compression. In this invention, an adaptive signal compression is achieved by correcting the color saturation through the multiplication of color difference signals (R-Y, G-Y) by a uniform correction factor. This ensures that color signal values (R, G, B) remain below their respective maximum allowed values without limiting the luminance (Y). The correction factor is preferably derived from a non-linearly compressed luminance signal (Y').

Career Highlights

Johannes is currently employed at U.S. Philips Corporation, where he continues to innovate and develop new technologies. His work at Philips has allowed him to explore various aspects of video signal processing and image enhancement.

Collaborations

He collaborates with Michael A Stekelenburg, another talented professional in the field. Their partnership has led to advancements in technology and innovative solutions.

Conclusion

Johannes Hjm Van Rooij is a distinguished inventor whose contributions to image processing and video technology are noteworthy. His patents reflect his commitment to enhancing the quality of visual media.