Patents by Inventor Sylvain Justin Georges Andre Hauper

Sylvain Justin Georges Andre Hauper has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of processing images for digital subtraction angiography
    Publication number: 20030053670
    Abstract: The invention relates to the field of digital subtraction angiography. An image processing method is applied to a digitized mask (100) and to a sequence of digitized opacified images (101). A logarithmic function (105) is applied to the values of the pixels of the digitized mask and to the values of the pixels of the sequence of digitized opacified images, and then a subtraction (108) is made of the logarithmic value of each pixel of a digitized opacified image from the logarithmic value of the corresponding pixel in the digitized mask. In order to improve the quality of the images processed, a processing step (102) able to decrease certain pixel values of the digitized mask and of the digitized opacified images is applied before applying the logarithmic function.
    Type: Application
    Filed: September 4, 2002
    Publication date: March 20, 2003
    Inventors: Sylvain Justin Georges Andre Hauper, Peter Maria Johannes Rongen, Herman Stegehuis