Patents by Inventor Jiantao Wei

Jiantao Wei 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: 8433483
    Abstract: A discriminator identifies windrow pixels associated with a windrow within a collected image. A definer defines a search space with respect to a vehicle. An evaluator determines respective spatial correlations between the defined search space and the windrow pixels for different angular displacements of the search space. An alignment detector or search engine determining a desired vehicular heading as a preferential angular displacement associated with a generally maximum spatial correlation between the defined search space and the windrow pixels. An offset calculator estimates an offset of the vehicle to a central point of the windrow or a depth axis to achieve the desired vehicle heading and desired position of the vehicle with respect to the windrow.
    Type: Grant
    Filed: January 4, 2012
    Date of Patent: April 30, 2013
    Assignee: Deere & Company
    Inventors: Shufeng Han, Jiantao Wei, Francisco Rovira-Mas
  • Patent number: 8185275
    Abstract: A discriminator identifies windrow pixels associated with a windrow within a collected image. A definer defines a search space with respect to a vehicle. An evaluator determines respective spatial correlations between the defined search space and the windrow pixels for different angular displacements of the search space. An alignment detector or search engine determining a desired vehicular heading as a preferential angular displacement associated with a generally maximum spatial correlation between the defined search space and the windrow pixels. An offset calculator estimates an offset of the vehicle to a central point of the windrow or a depth axis to achieve the desired vehicle heading and desired position of the vehicle with respect to the windrow.
    Type: Grant
    Filed: January 30, 2006
    Date of Patent: May 22, 2012
    Assignee: Deere & Company
    Inventors: Shufeng Han, Jiantao Wei, Francisco Rovira-Mas
  • Publication number: 20120101695
    Abstract: A discriminator identifies windrow pixels associated with a windrow within a collected image. A definer defines a search space with respect to a vehicle. An evaluator determines respective spatial correlations between the defined search space and the windrow pixels for different angular displacements of the search space. An alignment detector or search engine determining a desired vehicular heading as a preferential angular displacement associated with a generally maximum spatial correlation between the defined search space and the windrow pixels. An offset calculator estimates an offset of the vehicle to a central point of the windrow or a depth axis to achieve the desired vehicle heading and desired position of the vehicle with respect to the windrow.
    Type: Application
    Filed: January 4, 2012
    Publication date: April 26, 2012
    Inventors: Shufeng Han, Jiantao Wei, Francisco Rovira-Mas
  • Patent number: 7792622
    Abstract: The method and system for vehicular guidance comprises an imaging device for collecting color image data to facilitate distinguishing crop image data (e.g., crop rows) from background data. A definer defines a series of scan line segments generally perpendicular to a transverse axis of the vehicle or of the imaging device. An intensity evaluator determines scan line intensity data for each of the scan line segments. An alignment detector (e.g., search engine) identifies a preferential heading of the vehicle that is generally aligned with respect to a crop feature, associated with the crop image data, based on the determined scan line intensity meeting or exceeding a maximum value or minimum threshold value.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: September 7, 2010
    Assignees: Deere & Company, Kansas State University Research Foundation
    Inventors: Jiantao Wei, Shufeng Han
  • Patent number: 7684916
    Abstract: An imaging device collects color image data to facilitate distinguishing crop image data from background data. A definer defines a series of scan line segments generally perpendicular to a transverse axis of the vehicle or of the imaging device. An intensity evaluator determines scan line intensity data for each of the scan line segments. An alignment detector identifies a preferential heading of the vehicle that is generally aligned with respect to a crop feature, associated with the crop image data, based on the determined scan line intensity meeting or exceeding a maximum value or minimum threshold value. A reliability estimator estimates a reliability of the vehicle heading based on compliance with an intensity level criteria associated with one or more crop rows.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: March 23, 2010
    Assignees: Deere & Company, Kansas State University Research Foundation
    Inventors: Jiantao Wei, Shufeng Han
  • Patent number: 7580549
    Abstract: The method and system for vehicular guidance comprises an imaging device for collecting color image data. A definer defines a series of scan line segments generally perpendicular to a transverse axis of the vehicle or of the imaging device. An image parameter evaluator determines scan line image parameter data for each of the scan line segments. An alignment detector (e.g., search engine) identifies a preferential heading of the vehicle that is generally aligned with respect to a crop feature, associated with the image data, based on the determined scan line image parameter meeting or exceeding a maximum value or minimum threshold value.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: August 25, 2009
    Assignees: Deere & Company, Kansas State University Research Foundation
    Inventors: Jiantao Wei, Shufeng Han
  • Patent number: 7570783
    Abstract: The method and system for vehicular guidance comprises an imaging device for collecting color image data to facilitate distinguishing crop image data (e.g., crop rows) from background data. A definer defines a series of scan line segments generally perpendicular to a transverse axis of the vehicle or of the imaging device. An image parameter evaluator determines scan line image parameter data for each of the scan line segments. An alignment detector (e.g., search engine) identifies a preferential heading of the vehicle that is generally aligned with respect to a crop feature, associated with the crop image data, based on the determined scan line image parameter meeting or exceeding a maximum value or minimum threshold value. A reliability estimator estimates a reliability of the vehicle heading based on compliance with a criteria for scan line image parameter data associated with one or more crop rows.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: August 4, 2009
    Assignees: Deere & Company, Kansas State University Research Foundation
    Inventors: Jiantao Wei, Shufeng Han
  • Publication number: 20070014434
    Abstract: The method and system for vehicular guidance comprises an imaging device for collecting color image data. A definer defines a series of scan line segments generally perpendicular to a transverse axis of the vehicle or of the imaging device. An image parameter evaluator determines scan line image parameter data for each of the scan line segments. An alignment detector (e.g., search engine) identifies a preferential heading of the vehicle that is generally aligned with respect to a crop feature, associated with the image data, based on the determined scan line image parameter meeting or exceeding a maximum value or minimum threshold value.
    Type: Application
    Filed: December 16, 2005
    Publication date: January 18, 2007
    Inventors: Jiantao Wei, Shufeng Han
  • Publication number: 20070001097
    Abstract: The method and system for vehicular guidance comprises an imaging device for collecting color image data to facilitate distinguishing crop image data (e.g., crop rows) from background data. A definer defines a series of scan line segments generally perpendicular to a transverse axis of the vehicle or of the imaging device. An intensity evaluator determines scan line intensity data for each of the scan line segments. An alignment detector (e.g., search engine) identifies a preferential heading of the vehicle that is generally aligned with respect to a crop feature, associated with the crop image data, based on the determined scan line intensity meeting or exceeding a maximum value or minimum threshold value.
    Type: Application
    Filed: December 15, 2005
    Publication date: January 4, 2007
    Inventors: Jiantao Wei, Shufeng Han
  • Publication number: 20070001096
    Abstract: An imaging device collects color image data to facilitate distinguishing crop image data from background data. A definer defines a series of scan line segments generally perpendicular to a transverse axis of the vehicle or of the imaging device. An intensity evaluator determines scan line intensity data for each of the scan line segments. An alignment detector identifies a preferential heading of the vehicle that is generally aligned with respect to a crop feature, associated with the crop image data, based on the determined scan line intensity meeting or exceeding a maximum value or minimum threshold value. A reliability estimator estimates a reliability of the vehicle heading based on compliance with an intensity level criteria associated with one or more crop rows.
    Type: Application
    Filed: December 16, 2005
    Publication date: January 4, 2007
    Inventors: Jiantao Wei, Shufeng Han
  • Publication number: 20070003107
    Abstract: The method and system for vehicular guidance comprises an imaging device for collecting color image data to facilitate distinguishing crop image data (e.g., crop rows) from background data. A definer defines a series of scan line segments generally perpendicular to a transverse axis of the vehicle or of the imaging device. An image parameter evaluator determines scan line image parameter data for each of the scan line segments. An alignment detector (e.g., search engine) identifies a preferential heading of the vehicle that is generally aligned with respect to a crop feature, associated with the crop image data, based on the determined scan line image parameter meeting or exceeding a maximum value or minimum threshold value. A reliability estimator estimates a reliability of the vehicle heading based on compliance with a criteria for scan line image parameter data associated with one or more crop rows.
    Type: Application
    Filed: December 16, 2005
    Publication date: January 4, 2007
    Inventors: Jiantao Wei, Shufeng Han
  • Publication number: 20070005208
    Abstract: The entire right, title and interest in and to this application and all subject matter disclosed and/or claimed therein, including any and all divisions, continuations, reissues, etc., thereof are, effective as of the date of execution of this application, assigned, transferred, sold and set over by the applicant(s) named herein to Deere & Company, a Delaware corporation having offices at Moline, Ill. 61265, U.S.A., together with all rights to file, and to claim priorities in connection with, corresponding patent applications in any and all foreign countries in the name of Deere & Company or otherwise.
    Type: Application
    Filed: January 30, 2006
    Publication date: January 4, 2007
    Inventors: Shufeng Han, Jiantao Wei, Francisco Rovira-Mas