Patents by Inventor Shyam P. Keshavmurthy

Shyam P. Keshavmurthy 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: 9204129
    Abstract: A non-contact sensing system is provided for acquiring three-dimensional contour information of an object. The system is comprised of: a light source subsystem operable to scan a point of light in an area of illumination; a first imaging device having a field of view arranged to intersect with the illumination area and operable to capture image data; and a second imaging device having a field of view arranged to intersect with the illumination area and operable to capture image data. A first control module is in data communication with the first imaging device to determine contour information for an object in the field of view of the first imaging device and report the contour information for the object in a common coordinate system. A second control module is in data communication with the second imaging device to determine contour information for the object in the field of view of the second imaging device and report the contour information for the object in the common coordinate system.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: December 1, 2015
    Assignee: PERCEPTRON, INC.
    Inventors: Shyam P. Keshavmurthy, David Crowther, George C. Lin, Craig Manning, Martin P. Koskella, Brett Hibbard, Ralph Stefan, Jason Wilson, Richard Krakowski
  • Patent number: 9170097
    Abstract: A system and method is provided for imaging an article within a field of view, projecting an illumination field onto the article within field of view, and selectively projecting illumination structures onto the article within the field of view. Then, image data corresponding to the illumination field and the illumination structures may be received and a feature of the article may be analyzed based on the illumination field and the illumination structures.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: October 27, 2015
    Assignee: Perceptron, Inc.
    Inventors: Shyam P. Keshavmurthy, Chengchih Lin, David T. Wegryn
  • Patent number: 9013711
    Abstract: A structured light sensor system for measuring contour of a surface includes a control module that coordinates control of both a projection system and an imaging system to operate the structured light sensor system in three different modes. The imaging system is configured to selectively capture an image of light reflected off of the surface. In point mode, the imaging system is on for a first period during which the projection system projects a point of light onto the surface. In line mode, the imaging system is on for a second period during which the projection system projects onto the surface a first plurality of points of light forming a line of light. In area mode, the imaging system is on for a third period during which the projection system projects onto the surface a second plurality of points of light forming a plurality of lines of light.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: April 21, 2015
    Assignee: Perceptron, Inc.
    Inventors: Shyam P. Keshavmurthy, Chengchih Lin, Alfred A. Pease, Richard A. Krakowski
  • Patent number: 8395785
    Abstract: A sensor system and method for analyzing a feature in a sensing volume. The system projecting a pattern onto the feature and imaging the pattern where the pattern intersects with the feature, where the pattern is a series of lines that are encoded to identify at least one line of the series of lines.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: March 12, 2013
    Assignee: Perceptron, Inc.
    Inventors: Shyam P. Keshavmurthy, Chengchih Lin, David Crowther
  • Publication number: 20120307260
    Abstract: A system and method is provided for imaging an article within a field of view, projecting an illumination field onto the article within field of view, and selectively projecting illumination structures onto the article within the field of view. Then, image data corresponding to the illumination field and the illumination structures may be received and a feature of the article may be analyzed based on the illumination field and the illumination structures.
    Type: Application
    Filed: June 8, 2012
    Publication date: December 6, 2012
    Applicant: Perceptron, Inc.
    Inventors: Shyam P. Keshavmurthy, Chengchih Lin, David T. Wegryn
  • Patent number: 8243289
    Abstract: A sensor system and method for analyzing a feature in a sensing volume is provided. The system receives image data from a sensor, where the image data including peaks corresponding to the intersection of laser lines with the feature. The system generates a dynamic window based on the entropy of the peaks.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: August 14, 2012
    Assignee: Perceptron, Inc.
    Inventors: Chengchih Lin, Craig A. Manning, Shyam P. Keshavmurthy
  • Patent number: 8233156
    Abstract: A sensor system and method for analyzing a feature in a sensing volume. The system imaging the feature with a first sensor and a second sensor that cooperate to form a contiguous sensing volume.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: July 31, 2012
    Assignee: Perceptron, Inc.
    Inventors: Shyam P. Keshavmurthy, Chengchih Lin, David Crowther
  • Publication number: 20120062706
    Abstract: A non-contact sensing system is provided for acquiring three-dimensional contour information of an object. The system is comprised of: a light source subsystem operable to scan a point of light in an area of illumination; a first imaging device having a field of view arranged to intersect with the illumination area and operable to capture image data; and a second imaging device having a field of view arranged to intersect with the illumination area and operable to capture image data. A first control module is in data communication with the first imaging device to determine contour information for an object in the field of view of the first imaging device and report the contour information for the object in a common coordinate system. A second control module is in data communication with the second imaging device to determine contour information for the object in the field of view of the second imaging device and report the contour information for the object in the common coordinate system.
    Type: Application
    Filed: November 10, 2010
    Publication date: March 15, 2012
    Applicant: PERCEPTRON, INC.
    Inventors: Shyam P. Keshavmurthy, David Crowther, George C. Lin, Craig Manning, Martin P. Koskella, Brett Hibbard, Ralph Stefan, Jason Wilson, Richard Krakowski
  • Publication number: 20110310401
    Abstract: A sensor system and method for analyzing a feature in a sensing volume. The system projecting a pattern onto the feature and imaging the pattern where the pattern intersects with the feature, where the pattern is a series of lines that are encoded to identify at least one line of the series of lines.
    Type: Application
    Filed: September 1, 2011
    Publication date: December 22, 2011
    Applicant: Perceptron, Inc.
    Inventors: Shyam P. Keshavmurthy, Chengchih Lin, David Crowther
  • Publication number: 20110310399
    Abstract: A sensor system and method for analyzing a feature in a sensing volume. The system imaging the feature with a first sensor and a second sensor that cooperate to form a contiguous sensing volume.
    Type: Application
    Filed: September 1, 2011
    Publication date: December 22, 2011
    Applicant: Perceptron, Inc.
    Inventors: Shyam P. Keshavmurthy, Chengchih Lin, David Crowther
  • Publication number: 20110313721
    Abstract: A structured light sensor system for measuring contour of a surface includes a control module that coordinates control of both a projection system and an imaging system to operate the structured light sensor system in three different modes. The imaging system is configured to selectively capture an image of light reflected off of the surface. In point mode, the imaging system is on for a first period during which the projection system projects a point of light onto the surface. In line mode, the imaging system is on for a second period during which the projection system projects onto the surface a first plurality of points of light forming a line of light. In area mode, the imaging system is on for a third period during which the projection system projects onto the surface a second plurality of points of light forming a plurality of lines of light.
    Type: Application
    Filed: August 8, 2011
    Publication date: December 22, 2011
    Applicant: PERCEPTRON, INC.
    Inventors: Shyam P. Keshavmurthy, Chengchih Lin, Alfred A. Pease, Richard A. Krakowski
  • Patent number: 8031345
    Abstract: A sensor system for analyzing a feature in a sensing volume. The sensor system includes a laser source and a sensor. The first laser source projects a laser line into the sensing volume and onto the feature forming a laser stripe on the feature. The sensor images the laser stripe where the laser line intersects with the feature. The relationship between the sensor and the first laser source is precalibrated. The sensor uses the laser stripe to determine the position and/or orientation of the feature.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: October 4, 2011
    Assignee: Perceptron, Inc.
    Inventors: Shyam P. Keshavmurthy, Chengchih Lin, David Crowther
  • Patent number: 8014002
    Abstract: A structured light sensor system for measuring contour of a surface includes an imaging lens system, an image capturing device, a first set of micro electromechanical system (MEMS) mirrors, and a control module. The imaging lens system focuses light reflected from the surface, wherein the imaging lens system has a corresponding lens plane. The image capturing device captures the focused light and generates data corresponding to the captured light, wherein the image capturing device has a corresponding image plane that is not parallel to the lens plane. The first set of MEMS mirrors direct the focused light to the image capturing device. The control module receives the data, determines a quality of focus of the captured light based on the received data, and controls the first set of MEMS mirrors based on the quality of focus to maintain a Scheimpflug tilt condition between the lens plane and the image plane.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: September 6, 2011
    Assignee: Perceptron, Inc.
    Inventors: Shyam P. Keshavmurthy, Chengchih Lin, Alfred A. Pease, Richard A. Krakowski
  • Publication number: 20100302558
    Abstract: A sensor system and method for analyzing a feature in a sensing volume is provided. The system receives image data from a sensor, where the image data including peaks corresponding to the intersection of laser lines with the feature. The system generates a dynamic window based on the entropy of the peaks.
    Type: Application
    Filed: June 9, 2010
    Publication date: December 2, 2010
    Applicant: Perceptron, Inc.
    Inventors: Chengchih Lin, Craig A. Manning, Shyam P. Keshavmurthy
  • Publication number: 20100302554
    Abstract: A sensor system for analyzing a feature in a sensing volume. The sensor system includes a laser source and a sensor. The first laser source projects a laser line into the sensing volume and onto the feature forming a laser stripe on the feature. The sensor images the laser stripe where the laser line intersects with the feature. The relationship between the sensor and the first laser source is precalibrated. The sensor uses the laser stripe to determine the position and/or orientation of the feature.
    Type: Application
    Filed: May 29, 2009
    Publication date: December 2, 2010
    Inventors: Shyam P. Keshavmurthy, Chengchih Lin, David Crowther
  • Publication number: 20090262363
    Abstract: A structured light sensor system for measuring contour of a surface includes an imaging lens system, an image capturing device, a first set of micro electromechanical system (MEMS) mirrors, and a control module. The imaging lens system focuses light reflected from the surface, wherein the imaging lens system has a corresponding lens plane. The image capturing device captures the focused light and generates data corresponding to the captured light, wherein the image capturing device has a corresponding image plane that is not parallel to the lens plane. The first set of MEMS mirrors direct the focused light to the image capturing device. The control module receives the data, determines a quality of focus of the captured light based on the received data, and controls the first set of MEMS mirrors based on the quality of focus to maintain a Scheimpflug tilt condition between the lens plane and the image plane.
    Type: Application
    Filed: April 1, 2009
    Publication date: October 22, 2009
    Applicant: PERCEPTRON, INC.
    Inventors: Shyam P. Keshavmurthy, Chengchih Lin, Alfred A. Pease, Richard A. Krakowski
  • Patent number: 6266138
    Abstract: A surface inspection system is provided for detecting defects on a surface of a workpiece. The surface inspection system includes a diffused light source for emitting an elongated line of light onto the surface of the workpiece, a movable member for translating the workpiece in relation to the light source, an imaging device positioned at a vantage point such that the line of light is within its field of observation for capturing two or more sets of image data representative of a portion of the surface of the workpiece, and a data structure for storing model data, where the model data is indicative of the spatial relationship between the surface of the workpiece and the observation plane of the imaging device.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: July 24, 2001
    Assignee: Perceptron, Inc.
    Inventor: Shyam P. Keshavmurthy