Patents by Inventor Christopher Mayhew

Christopher Mayhew 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).

  • Publication number: 20030164893
    Abstract: A method is provided for real time control and manipulation of a moving imaging system lens's (prime, close-up, zoom, or anamorphic) depth of field. A computer control system is programed to perform a coordinated adjustment of a closed loop lens iris (aperture) and the shutter angle of a motion picture camera. The iris of the lens is reduced in size while simultaneously increasing the motion picture camera shutter angle an equal exposure (light transmission) amount, therefore, increasing the apparent image depth of field without a perceivable luminance shift. The image depth of field can be reduced by performing the above operation in reverse.
    Type: Application
    Filed: November 12, 1998
    Publication date: September 4, 2003
    Inventor: CHRISTOPHER A. MAYHEW
  • Publication number: 20030007560
    Abstract: An image compositing and compression method based on the creation and processing of parallax differences in motion photography. A parallax scanning MOE lens creates discrete parallax differences in the objects in the recorded scene that are perceived by the viewer as enhanced texture and depth when displayed. Using parallax differences in a captured scene, a computer can detect objects for the purpose of creating image compositing mattes. This method allows matte passes to be filmed on location at the time of principal photography, thereby saving costly additional blue/green stage production shoot days associated with traveling matte techniques. In addition, because the mattes are based on parallax scan differences in the recorded scene and not on a uniform color and luminance process, certain conflicting scene subject colors will not have to be avoided. Also, because the matte scenes are recorded on location, the lighting in each of the various elements matches in the final composited image.
    Type: Application
    Filed: July 5, 2002
    Publication date: January 9, 2003
    Applicant: Vision III Imaging, Inc.
    Inventors: Christopher A. Mayhew, Michael B. Martin
  • Patent number: 6324347
    Abstract: A lens aperture of an autostereoscopic camera is moved in a parallax scanning pattern through a plurality of disparity positions offset from the optical axis of the camera lens. Images of a scene being photographed, as viewed through the lens aperture in its various disparity positions, are recorded for subsequent display, which produces a three dimensional illusion when viewed on a conventional display with the unaided eye. The size of the lens aperture and the parallax scanning pattern are adjustable to suit conditions. The lens aperture may be defined by a through-hole in an opaque card, a plurality of interleaved leaf elements, or a planar array of cells switched between transparent and opaque states. In addition to stereoscopic imaging, the moving lens aperture principle of the present invention may be utilized in range-finding and camera image stabilization applications.
    Type: Grant
    Filed: August 13, 1999
    Date of Patent: November 27, 2001
    Assignee: Vision III Imaging, Inc.
    Inventors: Aron Bacs, Jr., Christopher A. Mayhew
  • Patent number: 5991551
    Abstract: A lens aperture of an autostereoscopic camera is moved in a parallax scanning pattern through a plurality of disparity positions offset from the optical axis of the camera lens. Images of a scene being photographed, as viewed through the lens aperture in its various disparity positions, are recorded for subsequent display, which produces a three dimensional illusion when viewed on a conventional display with the unaided eye. The size of the lens aperture and the parallax scanning pattern are adjustable to suit conditions. The lens aperture may be defined by a through-hole in an opaque card, a plurality of interleaved leaf elements, or a planar array of cells switched between transparent and opaque states. In addition to stereoscopic imaging, the moving lens aperture principle of the present invention may be utilized in range-finding and camera image stabilization applications.
    Type: Grant
    Filed: July 30, 1997
    Date of Patent: November 23, 1999
    Assignee: Vision III Imaging, Inc.
    Inventors: Aron Bacs, Jr., Christopher A. Mayhew
  • Patent number: 5678089
    Abstract: A lens aperture of an autostereoscopic camera is moved in a parallax scanning pattern through a plurality of disparity positions offset from the optical axis of the camera lens. Images of a scene being photographed, as viewed through the lens aperture in its various disparity positions, are recorded for subsequent display, which produces a three dimensional illusion when viewed on a conventional display with the unaided eye. The size of the lens aperture and the parallax scanning pattern are adjustable to suit conditions. The lens aperture may be defined by a through-hole in an opaque card, a plurality of interleaved leaf elements, or a planar array of cells switched between transparent and opaque states. In addition to stereoscopic imaging, the moving lens aperture principle of the present invention may be utilized in range-finding and camera image stabilization applications.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: October 14, 1997
    Assignee: Vision III Imaging, Inc.
    Inventors: Aron Bacs, Jr., Christopher A. Mayhew, Leo M. Fernekes, Richard A. Buchroeder, Stefan J. Rublowsky
  • Patent number: 5510831
    Abstract: Autostereoscopic imaging is achieved by acquiring succession of first and second image frames from at least two different points of view, and image processing the first and second image frames, such that progressively different partial images of at least focussed and converged subject images in the second image frames are substituted for corresponding subject partial images in the first image frames in repeating sequence on a corresponding image frame-by-image frame basis to create a succession of composite image frames. Two-dimensional display of the resulting succession of composite image frames is perceivable in three-dimensional illusion.
    Type: Grant
    Filed: February 10, 1994
    Date of Patent: April 23, 1996
    Assignee: Vision III Imaging, Inc.
    Inventor: Christopher A. Mayhew
  • Patent number: 5325193
    Abstract: A single camera autostereoscopic recording system includes a single image recorder having a single optical path moved along a scanning path defined by a pair of rails and an arm movable on the rails substantially continuously for a plurality of scanning cycles. Alternatively a lens maintains the point of convergence. A path defining structure includes the ability to adjust the convergent point as well as the extent of travel along the scanning path or disparity of the images. The convergent point of the scanning path can be manually or automatically adjusted using a range finder. A unique driver structure including a reciprocating armature and stator provides scanning motion with reduced reactional forces. The degree of motion of the recorded images is used to adjust the amount of travel along the scanning path. Synchronization between the driver and the recorder is bi-directional for double exposures.
    Type: Grant
    Filed: October 20, 1992
    Date of Patent: June 28, 1994
    Assignee: Vision III Imaging, Inc.
    Inventors: Eric K. Pritchard, Christopher A. Mayhew
  • Patent number: 5157484
    Abstract: A single camera autostereoscopic recording system includes a single image recorder having a single optical path moved along the scanning path substantially continuously for a plurality of scanning cycles. A path defining structure includes the ability to adjust the convergent point as well as the extent of travel along the scanning path or disparity of the images. The convergent point of the scanning path can be manually or automatically adjusted using a range finder. A unique driver structure provides scanning motion with reduced reactional forces. The degree of motion of the recorded images is used to adjust the amount of travel along the scanning path. Synchronization between the driver and the recorder is bi-directional for double exposures. The recorded image is adjusted in recording or in display as a function of the position in the scanning path.
    Type: Grant
    Filed: November 29, 1990
    Date of Patent: October 20, 1992
    Assignee: Vision III Imaging, Inc.
    Inventors: Eric K. Pritchard, Christopher A. Mayhew
  • Patent number: 5113253
    Abstract: A single camera autostereoscopic recording system includes a single image recorder having a single optical path moved along the scanning path substantially continuously for a plurality of scanning cycles. A path defining structure includes the ability to adjust the convergent point as well as the extent of travel along the scanning path or disparity of the images. The convergent point of the scanning path can be manually or automatically adjusted using a range finder. A unique driver structure provides scanning motion with reduced reactional forces. The degree of motion of the recorded images is used to adjust the amount of travel along the scanning path. Synchronization between the driver and the recorder is bi-directional for double exposures. The recorded image is adjusted in recording or in display as a function of the position in the scanning path.
    Type: Grant
    Filed: November 29, 1990
    Date of Patent: May 12, 1992
    Assignee: Vision III Imaging, Inc.
    Inventors: Eric K. Pritchard, Christopher A. Mayhew
  • Patent number: 5014126
    Abstract: The method and apparatus substantially continuously changes the view of a single image receive substantially aligned to a convergent point in a scene, along a scanning path and recording a plurality of scanning images for each cycle of traversing the scanning path. The scanning path and the scanning and recording rates are selected to produce motion within visio-psychological memory rate range when displayed using standard display devices.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: May 7, 1991
    Assignee: Vision III Imaging, Inc.
    Inventors: Eric K. Pritchard, Christopher A. Mayhew
  • Patent number: 4966436
    Abstract: A method is provided for obtaining images for use in displaying a three-dimensional illusion which includes the step of obtaining first and second images of a subject volume having foreground and background portions with the points of origin of those images located in a first plane which includes left and right points of origin of an observer of the subject volume and which is normal to the optical axis of that observer. The first and second points of origin are also respectively located equidistant above and below a first line interconnecting the left and right points of origin and are located along a second line which is normal to and bisects the first line. The first and second optical axes are aligned to converge in a second plane parallel to the first plane which includes the foreground portion of the subject volume within the field of view of the observer which is closest to the first plane.
    Type: Grant
    Filed: February 13, 1989
    Date of Patent: October 30, 1990
    Assignee: Christopher A. Mayhew
    Inventors: Christopher A. Mayhew, Eric K. Pritchard
  • Patent number: 4815819
    Abstract: A method is provided for obtaining images for use in displaying a three-dimensional illusion which includes the step of obtaining first and second images of a subject volume having foreground and background portions with the points of origin of those images located in a first plane which includes left and right points of origin of an observer of the subject volume and which is normal to the optical axis of that observer. The first and second points of origin are also respectively located equidistant above and below a first line interconnecting the left and right points of origin and are located along a second line which is normal to and bisects the first line. The first and second optical axes are aligned to converge in a second plane parallel to the first plane which includes the foreground portion of the subject volume within the field of view of the observer which is closest to the first plane.
    Type: Grant
    Filed: April 30, 1987
    Date of Patent: March 28, 1989
    Assignee: Christopher A. Mayhew
    Inventors: Christopher A. Mayhew, Eric K. Pritchard