Patents by Inventor Paul E. Haeberli

Paul E. Haeberli 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).

  • Fabrication of free form structures from planar materials
    Patent number: 6819966
    Abstract: A free form source model is divided into surface sections by identifying external boundary edges and internal boundary edges. The boundaries are connected or further divided as necessary to achieve a perimeter about each surface section which is a single closed curve. Doubly curved surfaces may also be subdivided. A developable output surface which approximates each source model surface section is then determined by calculating the minimum cost triangulation of each source model perimeter. Costs to be minimized may include the deviation of the triangle surface normal from the edge normal, the degree of bending between adjacent triangles, or the departure of the approximated surface from the original surface. The two-dimensional boundary of the flattened surface guides fabrication of output segments from sheet material, which may be assembled into an output object comprised entirely of developable surfaces.
    Type: Grant
    Filed: December 6, 2003
    Date of Patent: November 16, 2004
    Inventor: Paul E. Haeberli
  • Digital filtering for lenticular printing
    Patent number: 5438429
    Abstract: A method is provided which sharpens three-dimensional images by using an unsharp masking technique subsequent to interleaving and before printing.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: August 1, 1995
    Assignee: Silicon Graphics, Inc.
    Inventors: Paul E. Haeberli, Leonard J. Flory
  • Digital filtering for lenticular printing
    Patent number: 5311329
    Abstract: A method is provided which sharpens three-dimensional images by using an unsharp masking technique subsequent to interleaving and before printing.
    Type: Grant
    Filed: August 28, 1991
    Date of Patent: May 10, 1994
    Assignee: Silicon Graphics, Inc.
    Inventors: Paul E. Haeberli, Leonard J. Flory
  • Method and apparatus for painting on a computer
    Patent number: 5182548
    Abstract: A method and apparatus for painting in a computer controlled video display system is described. A current shape of a brush stroke is determined. A current direction of the brush stroke is determined. A current position is determined. A current color is set equal to a color at the current position. The step of drawing the brush image on the display comprises the steps of setting a color of the brush image equal to the current color, setting a position of the brush image equal to the current position, and setting a direction of the brush image equal to the current direction of the brush stroke.
    Type: Grant
    Filed: January 10, 1990
    Date of Patent: January 26, 1993
    Assignee: Silicon Graphics, Inc.
    Inventor: Paul E. Haeberli