Patents by Inventor Robert A. Wolff

Robert A. Wolff 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: 10791277
    Abstract: The techniques described herein relate to methods, apparatus, and computer readable media configured to determine parameters for image acquisition. One or more image sensors are each arranged to capture a set of images of a scene, and each image sensor comprises a set of adjustable imaging parameters. A projector is configured to project a moving pattern on the scene, wherein the projector comprises a set of adjustable projector parameters. The set of adjustable projector parameters and the set of adjustable imaging parameters are determined, based on a set of one or more constraints, to reduce noise in 3D data generated based on the set of images.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: September 29, 2020
    Assignee: Cognex Corporation
    Inventors: Robert Wolff, Thomas Penny, Marcus Große
  • Patent number: 10775160
    Abstract: This invention provides a system for measuring displacement of an object surface having a displacement sensor that projects a line on the object surface and receives light from the projected line at an imager in a manner defines a plurality of displacement values in a height direction. A vision system processor operates on rows of imager pixels to determine a laser line center in columns of imager pixels in each of a plurality of regions of interest. Each region of interest defines a plurality of rows that correspond with expected locations of the projected line on the object surface. A GUI can be used to establish the regions. In further embodiments, the system generates grayscale images with the imager. These grayscale images can be compared to a generated height image to compensate for contrast-induced false height readings. Imager pixels can be compared to a reference voltage to locate the line.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: September 15, 2020
    Assignee: Cognex Corporation
    Inventors: Robert A. Wolff, Michael C. Moed, Mikhail Akopyan, Robert Tremblay, Willard Foster, Aaron S. Wallack
  • Publication number: 20200084384
    Abstract: The techniques described herein relate to methods, apparatus, and computer readable media configured to determine parameters for image acquisition. One or more image sensors are each arranged to capture a set of images of a scene, and each image sensor comprises a set of adjustable imaging parameters. A projector is configured to project a moving pattern on the scene, wherein the projector comprises a set of adjustable projector parameters. The set of adjustable projector parameters and the set of adjustable imaging parameters are determined, based on a set of one or more constraints, to reduce noise in 3D data generated based on the set of images.
    Type: Application
    Filed: September 11, 2018
    Publication date: March 12, 2020
    Applicant: Cognex Corporation
    Inventors: Robert Wolff, Thomas Penny, Marcus Große
  • Publication number: 20190376721
    Abstract: A damper assembly for use in a round forced air duct feeding a register vent through a register boot includes a damper frame having a frame periphery with a first side and a second side that is at least substantially parallel with the first side, the first side and the second side each having a length that is greater than a distance between the first side and the second side. A damper blade is pivotable relative to the damper frame about an axis of rotation, at least substantially parallel with the first side and the second side, between an open position and a closed position. A flexible outer seal extends outwardly from the frame periphery of the damper frame and is at least substantially circular in order to seal against an inner surface of the round forced air duct.
    Type: Application
    Filed: June 12, 2018
    Publication date: December 12, 2019
    Inventors: Nathan Carlson, David J. Emmons, Steven Wolff, Robert Bick
  • Patent number: 10438036
    Abstract: This invention provides a system and method for reading and decoding ID features located on a surface of a curved, sloped and/or annular object, such as a tire moving on a conveyor. A plurality of 3D sensors are operatively connected to a vision system processor. The sensors are calibrated by calibration parameters to generate a stitched-together 3D image of a field of view in a common coordinate space. A motion conveyance (e.g. a conveyor) causes the object and the 3D sensors to move in relative motion, and the conveyance provides motion information to the vision system processor. An ID finder locates ID features within a version of the 3D image and a decoder (e.g. an OCR reader) generates data from the ID features. The ID finder can locate a trained portion of the ID and the search for variable code elements at a known orientation relative to the trained portion.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: October 8, 2019
    Assignee: Cognex Corporation
    Inventors: Matthew R. Reome, Ali M. Zadeh, Robert A. Wolff, Ruibing Wang, Aaron S. Wallack, David J. Michael, Hongwei Zhu, Benjamin D. Klass
  • Publication number: 20190265027
    Abstract: This invention provides a system for measuring displacement of an object surface having a displacement sensor that projects a line on the object surface and receives light from the projected line at an imager in a manner defines a plurality of displacement values in a height direction. A vision system processor operates on rows of imager pixels to determine a laser line center in columns of imager pixels in each of a plurality of regions of interest. Each region of interest defines a plurality of rows that correspond with expected locations of the projected line on the object surface. A GUI can be used to establish the regions. In further embodiments, the system generates grayscale images with the imager. These grayscale images can be compared to a generated height image to compensate for contrast-induced false height readings. Imager pixels can be compared to a reference voltage to locate the line.
    Type: Application
    Filed: August 6, 2018
    Publication date: August 29, 2019
    Inventors: Robert A. Wolff, Michael C. Moed, Mikhail Akopyan, Robert Tremblay, Willard Foster, Aaron S. Wallack
  • Publication number: 20180374239
    Abstract: This invention provides an easy-to-manufacture, easy-to-analyze calibration object which combines measurable and repeatable, but not necessarily accurate, 3D features—such as a two-sided calibration object/target in (e.g.) the form of a frustum, with a pair of accurate and measurable features, more particularly parallel faces separated by a precise specified thickness, so as to provide for simple field calibration of opposite-facing DS sensors. Illustratively, a composite calibration object can be constructed, which includes the two-sided frustum that has been sandblasted and anodized (to provide measurable, repeatable features), with a flange whose above/below parallel surfaces have been ground to a precise specified thickness. The 3D corner positions of the two-sided frustum are used to calibrate the two sensors in X and Y, but cannot establish absolute Z without accurate information about the thickness of the two-sided frustum; the flange provides the absolute Z information.
    Type: Application
    Filed: October 13, 2017
    Publication date: December 27, 2018
    Inventors: Aaron S. Wallack, Robert A. Wolff, David J. Michael, Ruibing Wang, Hongwei Zhu
  • Patent number: 10041786
    Abstract: This invention provides a system for measuring displacement of an object surface having a displacement sensor that projects a line on the object surface and receives light from the projected line at an imager in a manner defines a plurality of displacement values in a height direction. A vision system processor operates on rows of imager pixels to determine a laser line center in columns of imager pixels in each of a plurality of regions of interest. Each region of interest defines a plurality of rows that correspond with expected locations of the projected line on the object surface. A GUI can be used to establish the regions. In further embodiments, the system generates grayscale images with the imager. These grayscale images can be compared to a generated height image to compensate for contrast-induced false height readings. Imager pixels can be compared to a reference voltage to locate the line.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: August 7, 2018
    Assignee: Cognex Corporation
    Inventors: Robert A. Wolff, Michael C. Moed, Mikhail Akopyan, Robert Tremblay, Willard Foster, Aaron S. Wallack
  • Patent number: 10036167
    Abstract: The present invention is directed generally to a new flat or A-frame pop-up canopy, shelter, cover, and/or awning, to the integration of skylights and electrical lights systems, to clocks and watches that can record a persons preferred alarm voice or video, winter gloves made to look like or with caricatures formed with or on them, digital radio and TV systems with a method of overcoming lost signal interruptions, and a single vent HVAC temperature control systems. Each of these approaches make life easier and/or more fun for people.
    Type: Grant
    Filed: March 15, 2014
    Date of Patent: July 31, 2018
    Inventors: Kevin Alan Wolff, Harrison Robert Wolff, Benjamin Grayson Wolff, Mary Louise M. Wolff
  • Publication number: 20170299380
    Abstract: This invention provides a system for measuring displacement of an object surface having a displacement sensor that projects a line on the object surface and receives light from the projected line at an imager in a manner defines a plurality of displacement values in a height direction. A vision system processor operates on rows of imager pixels to determine a laser line center in columns of imager pixels in each of a plurality of regions of interest. Each region of interest defines a plurality of rows that correspond with expected locations of the projected line on the object surface. A GUI can be used to establish the regions. In further embodiments, the system generates grayscale images with the imager. These grayscale images can be compared to a generated height image to compensate for contrast-induced false height readings. Imager pixels can be compared to a reference voltage to locate the line.
    Type: Application
    Filed: March 13, 2017
    Publication date: October 19, 2017
    Inventors: Robert A. Wolff, Michael C. Moed, Mikhail Akopyan, Robert Tremblay, Willard Foster, Aaron S. Wallack
  • Patent number: 9605950
    Abstract: This invention provides a system for measuring displacement of an object surface having a displacement sensor that projects a line on the object surface and receives light from the projected line at an imager in a manner defines a plurality of displacement values in a height direction. A vision system processor operates on rows of imager pixels to determine a laser line center in columns of imager pixels in each of a plurality of regions of interest. Each region of interest defines a plurality of rows that correspond with expected locations of the projected line on the object surface. A GUI can be used to establish the regions. In further embodiments, the system generates grayscale images with the imager. These grayscale images can be compared to a generated height image to compensate for contrast-induced false height readings. Imager pixels can be compared to a reference voltage to locate the line.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: March 28, 2017
    Assignee: COGNEX CORPORATION
    Inventors: Robert A. Wolff, Michael C. Moed, Mikhail Akopyan, Robert Tremblay, Willard Foster, Aaron S. Wallack
  • Publication number: 20150213606
    Abstract: This invention provides a system and method for determining the location and characteristics of certain surface features that comprises elevated or depressed regions with respect to a smooth surrounding surface on an object. A filter acts on a range image of the scene. A filter defines an annulus or other perimeter shape around each pixel in which a best-fit surface is established. A normal to the pixel allows derivation of local displacement height. The displacement height is used to establish a height deviation image of the object, with which bumps, dents or other height-displacement features can be determined. The bump filter can be used to locate regions on a surface with minimal irregularities by mapping such irregularities to a grid and then thresholding the grid to generate a cost function. Regions with a minimal cost are acceptable candidates for application of labels and other items in which a smooth surface is desirable.
    Type: Application
    Filed: July 11, 2014
    Publication date: July 30, 2015
    Inventors: Mikhail Akopyan, Lowell D. Jacobson, Robert A. Wolff
  • Publication number: 20140347473
    Abstract: This invention provides a system for measuring displacement of an object surface having a displacement sensor that projects a line on the object surface and receives light from the projected line at an imager in a manner defines a plurality of displacement values in a height direction. A vision system processor operates on rows of imager pixels to determine a laser line center in columns of imager pixels in each of a plurality of regions of interest. Each region of interest defines a plurality of rows that correspond with expected locations of the projected line on the object surface. A GUI can be used to establish the regions. In further embodiments, the system generates grayscale images with the imager. These grayscale images can be compared to a generated height image to compensate for contrast-induced false height readings. Imager pixels can be compared to a reference voltage to locate the line.
    Type: Application
    Filed: January 7, 2014
    Publication date: November 27, 2014
    Applicant: Cognex Corporation
    Inventors: Robert A. Wolff, Michael C. Moed, Mikhail Akopyan, Robert Tremblay, Willard Foster, Aaron S. Wallack
  • Patent number: 8687060
    Abstract: This invention provides a system and method for estimating the time of a set of pulses based upon a plurality of position measurements of a moving object provided by a non-contacting sensor, such as a one-dimensional optical sensor that tracks movements of object features and reports position measurements with respect to time. Position measurements determine the estimated velocity. The velocity and position measurement allow the timing of a next pulse to be updated, based upon the time of the previous pulse. The pulse is output at the time of the last updated time before the first new position measurement received after the estimated pulse output time. The system allows pulses to be precisely delivered at predetermined motion distances. Where the distance is too short for the measurement rate, the system compares estimated pulse times to clock-generated pulse times and updates the clock-generated pulse times based upon the difference.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: April 1, 2014
    Assignee: Cognex Corporation
    Inventor: Robert A. Wolff
  • Publication number: 20130271619
    Abstract: A control device for a lens (12) of a camera (10), in particular an HD camera, for adjusting the focus, the aperture and/or the zoom comprises at least one electric motor drive unit (16) for adjusting a lens ring (14) and at least one operating unit (18) with a manually deflectable operating element (28) for controlling the drive unit (16). The operating unit (18) has a monitoring device which provides tactile feedback about the extent and/or the direction of the manual deflection.
    Type: Application
    Filed: April 20, 2010
    Publication date: October 17, 2013
    Inventors: Martin Longmore, Robert Wolff, Joachim Meinberg, Wolfgang Stanek
  • Patent number: 7623674
    Abstract: Enhanced portal security is provided through stereoscopy, including a stereo door sensor for detecting and optionally preventing access violations, such as piggybacking and tailgating. A portal security system can include a 3D imaging system that generates a target volume from plural 2D images of a field of view about a portal; and a processor that detects and tracks people candidates moving through the target volume to detect a portal access event.
    Type: Grant
    Filed: November 5, 2003
    Date of Patent: November 24, 2009
    Assignee: Cognex Technology and Investment Corporation
    Inventors: Sanjay Nichani, Cyril C. Marrion, Jr., Robert Wolff, David Shatz, Raymond A. Fix, Gene Halbrooks
  • Patent number: 7305114
    Abstract: This invention overcomes the disadvantages of the prior art by providing a human/machine interface (HMI) for use with machine vision systems (MVSs) that provides the machine vision system processing functionality at the sensor end of the system, and uses a communication interface to exchange control, image and analysis information with a standardized, preferably portable device that can be removed from the MVS during runtime. In an illustrative embodiment, this portable device can be a web-browser equipped computer (handheld, laptop or fixed PC) or a Personal Digital Assistant (PDA). The communication interface on the sensor-end of the system is adapted to communicate over a cable or wireless communication link (for example infrared (IR) or radio frequency (RF)), with a corresponding communication interface in the portable device.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: December 4, 2007
    Assignee: Cognex Technology and Investment Corporation
    Inventors: Robert Wolff, William Silver
  • Patent number: 7167575
    Abstract: A two-dimensional (2-D) machine-vision safety-solution involving a method and apparatus for performing high-integrity, high efficiency machine vision. A known structured lighting texture pattern is projected upon a target area. A model image of the pattern on an empty target field is stored during an initial training step. The machine vision safety solution digitally interprets a camera image of the light reflected by the objects in the target area to detect and characterize a pattern in the image. The pattern characterization is then processed to determine if a distortion of the characterization factors is larger than a predetermined threshold, and results in an alarm condition.
    Type: Grant
    Filed: April 29, 2000
    Date of Patent: January 23, 2007
    Assignee: Cognex Corporation
    Inventors: Sanjay Nichani, Robert Wolff, William Silver, David A. Schatz
  • Publication number: 20060129938
    Abstract: A method and system is provided for detecting, commanding and controlling diverse home devices currently connected to a home network. An interface is provided for accessing the home devices that are currently connected to a home network. According to the method, a device link file is generated, wherein the device link file identifies home devices that are currently connected to the home network. A device link page is created, wherein the device link page contains a device button that is associated with each home device that is identified in the device link file. A hyper-text link is associated with each device button, wherein the hyper-text link provides a link to an HTML page that is contained on the home device that is associated with the device button, and the device link page is displayed on a browser based home device.
    Type: Application
    Filed: February 7, 2006
    Publication date: June 15, 2006
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Richard Humpleman, G. Harms, Michael Deacon, Robert Wolff
  • Publication number: 20060053375
    Abstract: A method and system is provided for detecting, commanding and controlling diverse home devices currently connected to a home network. An interface is provided for accessing the home devices that are currently connected to a home network. According to the method, a device link file is generated, wherein the device link file identifies home devices that are currently connected to the home network. A device link page is created, wherein the device link page contains a device button that is associated with each home device that is identified in the device link file. A hyper-text link is associated with each device button, wherein the hyper-text link provides a link to an HTML page that is contained on the home device that is associated with the device button, and the device link page is displayed on a browser based home device.
    Type: Application
    Filed: October 18, 2005
    Publication date: March 9, 2006
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Richard Humpleman, G. Kevin Harms, Michael Deacon, Robert Wolff