Patents by Inventor David H Tofsted

David H Tofsted 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: 9998694
    Abstract: A method for image processing comprising providing an opening for entrance of light; the light being capable of being formed into an image; providing at least one optical element in an optical train configured to focus light; providing a variable aperture operatively associated with the at least one optical element; the variable aperture being placed in the optical train at an image plane and comprising mask settings for shielding portions of the light; providing an imager; providing at least one processor operatively connected to the variable aperture and imager; the at least one processor configured to control the passage of the light through the variable aperture; selectively masking portions of light using the mask settings of the variable aperture; obtaining image results using the settings; comparing image results obtained by the mask settings, and determining the phase correction that provides the optimal image results.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: June 12, 2018
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: David H Tofsted, Sean G O'Brien
  • Publication number: 20150229854
    Abstract: A method for image processing comprising providing an opening for entrance of light; the light being capable of being formed into an image; providing at least one optical element in an optical train configured to focus light; providing a variable aperture operatively associated with the at least one optical element; the variable aperture being placed in the optical train at an image plane and comprising mask settings for shielding portions of the light; providing an imager; providing at least one processor operatively connected to the variable aperture and imager; the at least one processor configured to control the passage of the light through the variable aperture; selectively masking portions of light using the mask settings of the variable aperture; obtaining image results using the settings; comparing image results obtained by the mask settings, and determining the phase correction that provides the optimal image results.
    Type: Application
    Filed: April 13, 2015
    Publication date: August 13, 2015
    Applicant: U.S. ARMY RESEARCH LABORATORY ATTN: RDRL-LOC-I
    Inventors: DAVID H. TOFSTED, Sean G. O'Brien
  • Patent number: 9006633
    Abstract: A method and system for image processing comprising an opening for entrance of light for forming an image by the system; at least one optical element through which the light passes; a variable aperture operatively associated with the at least one optical element placed in the optical train at an image plane and comprising a plurality of settings comprising first mask settings for shielding portions of the light and second mask settings for selectively masking portions of the light that pass through the first mask settings; an imager, the at least one processor being operatively connected to the variable aperture and imager for controlling the passage of the light through the variable aperture by selecting one of plurality of first mask settings and associated second mask settings, obtaining image results using the settings, comparing image results obtained by the respective mask settings, and determining the optimal first mask setting.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: April 14, 2015
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: David H Tofsted, Sean Gerard O'Brien