Patents by Inventor Changbo Huang

Changbo Huang 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 and system for enhanced formulation and visualization rendering
    Patent number: 8345252
    Abstract: An apparatus for measuring a spatially under-sampled Bidirectional Reflectance Distribution Function (BRDF) of a surface. The apparatus may comprise a first light source directed to illuminate the surface from a first illumination direction, and a plurality of sensors positioned to receive light reflected by the surface. The plurality of sensors may comprise first, second and third sensors positioned to receive light reflected by the surface in first, second and third non-coplanar directions. In various embodiments, the apparatus may also comprise a computer in communication with the plurality of sensors. The computer is configured to convert light sensed by the plurality of sensors into a first appearance property of the surface considering the first, second, and third reflectance directions. A method of calculating xDNA, the vector sum of the observed reflectance intensity over a plurality of wavelengths and angles. Methods of using the calculated xDNA for formulating recipes for a surfaces colors.
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: January 1, 2013
    Assignee: X-Rite, Inc.
    Inventors: Jon Kenneth Nisper, Thomas M. Richardson, Marc S. Ellens, Changbo Huang
  • Method And System For Enhanced Formulation And Visualization Rendering
    Publication number: 20090213120
    Abstract: An apparatus for measuring a spatially under-sampled Bidirectional Reflectance Distribution Function (BRDF) of a surface. The apparatus may comprise a first light source directed to illuminate the surface from a first illumination direction, and a plurality of sensors positioned to receive light reflected by the surface. The plurality of sensors may comprise first, second and third sensors positioned to receive light reflected by the surface in first, second and third non-coplanar directions. In various embodiments, the apparatus may also comprise a computer in communication with the plurality of sensors. The computer is configured to convert light sensed by the plurality of sensors into a first appearance property of the surface considering the first, second, and third reflectance directions. A method of calculating xDNA, the vector sum of the observed reflectance intensity over a plurality of wavelengths and angles. Methods of using the calculated xDNA for formulating recipes for a surfaces colors.
    Type: Application
    Filed: March 10, 2009
    Publication date: August 27, 2009
    Applicant: X-Rite, Inc.
    Inventors: Jon Kenneth Nisper, Thomas M. Richardson, Marc S. Ellens, Changbo Huang