Patents by Inventor Burkhard Hahn

Burkhard Hahn 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).

  • Patent number: 9092857
    Abstract: A method for noise suppression in images of an image sequence, where an iteratively better adapted noise suppression can be ensured for images of the image sequence, in particular in a rising number of images in the image sequence. The method for noise suppression includes a low-pass filter algorithm: p i,jn+1=?i,jn+1*pi,jn+(1??i,jn+1)*Qi,jn+1 with an attenuation function ?i,jn+1=?i,jn+1(?0i,jn+1,?i,jn+1).
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: July 28, 2015
    Assignee: Jenoptik Optical Systems GmbH
    Inventor: Burkhard Hahn
  • Publication number: 20140212063
    Abstract: The invention relates to a method for noise suppression in images of an image sequence. It is an object of the invention to find how an iteratively better adapted noise suppression can be ensured for images of an image sequence, in particular given a rising number of images. According to the invention, this object is achieved by a method for noise suppression which provides a low-pass filter algorithm: Pi,jn+1=?i,jn+1*Pi,jn+(1??i,jn+1)*Qi,jn+1 with an attenuation function ?i,jn+1=?i,jn+1(?0i,jn+1,?i,jn+1).
    Type: Application
    Filed: September 7, 2012
    Publication date: July 31, 2014
    Applicant: JENOPTIK OPTICAL SYSTEM GMBH
    Inventor: Burkhard Hahn
  • Patent number: 7623703
    Abstract: In a method for reducing color moiré in digital images, the object is to improve the suppression of color moiré in such a way that effects on edge areas and fine structures are further reduced in that low-frequency beats causing color moiré are detected and attenuated in such a way that correction is carried out only for two-dimensionally extensive areas and the edge areas and fine structures remain excluded to a great extent. A comparison of bandpass energies between the luminance channel and chrominance channels serves as a marking criterion in order initially to determine pixels in which color moiré is present and then to carry out a frequency-selective energy reduction in the chrominance channels at middle frequencies for suppressing the long-wave color moiré.
    Type: Grant
    Filed: May 20, 2005
    Date of Patent: November 24, 2009
    Assignee: Jenoptik Laser, Optik, Systeme GmbH
    Inventor: Burkhard Hahn
  • Publication number: 20070122030
    Abstract: In a method for reducing color moiré in digital images, the object is to improve the suppression of color moiré in such a way that effects on edge areas and fine structures are further reduced in that low-frequency beats causing color moiré are detected and attenuated in such a way that a correction is carried out only for two-dimensionally extensive areas and the edge areas and fine structures remain excluded to a great extent. A comparison of bandpass energies between the luminance channel and chrominance channels serves as a marking criterion in order initially to determine pixels in which color moiré is present and then to carry out a frequency-selective energy reduction in the chrominance channels at middle frequencies for suppressing the long-wave color moiré.
    Type: Application
    Filed: May 20, 2005
    Publication date: May 31, 2007
    Inventor: Burkhard Hahn
  • Patent number: 6147356
    Abstract: An arrangement for the detection of disk-shaped objects in a cassette preferably for detecting the presence and the position of semiconductor wafers in a cassette is disclosed. Reliable detection of disk-shaped objects in cassettes is provided regardless of their orientation or any discontinuity in their edge region. This is done by an arrangement by detecting light reflected at the edges of the objects in that it has at least two linearly elongated rows of light sources which are arranged parallel to a family of planes predetermined by the cassette shelves and objects and which lie in a surface parallel to the edge areas to be detected. Further, an objective is arranged between the parallel linear light sources and by which a plurality of shelves is imaged simultaneously on the sensor unit.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: November 14, 2000
    Assignee: Jenoptik Aktiengesellschaft
    Inventors: Burkhard Hahn, Siegfried Belke, Steffen Loesch