Patents by Inventor Walter E. Carels

Walter E. Carels 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 and device for X-ray processing
    Patent number: 4507681
    Abstract: The method and the device in accordance with the present invention utilizes a recursive filter for forming a composite image from a short series of X-ray images with the weighting factor .alpha. used in the filter being a function of the number of X-ray images processed and to be processed. When .alpha. is suitably chosen, the amplitude of the composite image is always constant, such as a constant image brightness, and each X-ray image makes an equally large contribution to the composite image. The noise level in the composite image decreases as the number of processed X-ray images is larger.
    Type: Grant
    Filed: November 3, 1982
    Date of Patent: March 26, 1985
    Assignee: U.S. Philips Corporation
    Inventors: Leonardus A. J. Verhoeven, Otto E. Scheltema, Walter E. Carels