Patents by Inventor Xiaohang Wang

Xiaohang Wang 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: 8879783
    Abstract: Extracting card data comprises receiving, by one or more computing devices, a digital image of a card; perform an image recognition process on the digital representation of the card; identifying an image in the digital representation of the card; comparing the identified image to an image database comprising a plurality of images and determining that the identified image matches a stored image in the image database; determining a card type associated with the stored image and associating the card type with the card based on the determination that the identified image matches the stored image; and performing a particular optical character recognition algorithm on the digital representation of the card, the particular optical character recognition algorithm being based on the determined card type. Another example uses an issuer identification number to improve data extraction. Another example compares extracted data with user data to improve accuracy.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: November 4, 2014
    Assignee: Google Inc.
    Inventors: Xiaohang Wang, Farhan Shamsi, Sanjiv Kumar, Henry Allan Rowley, Marcus Quintana Mitchell
  • Patent number: 8837833
    Abstract: Extracting financial card information with relaxed alignment comprises a method to receive an image of a card, determine one or more edge finder zones in locations of the image, and identify lines in the one or more edge finder zones. The method further identifies one or more quadrilaterals formed by intersections of extrapolations of the identified lines, determines an aspect ratio of the one or more quadrilateral, and compares the determined aspect ratios of the quadrilateral to an expected aspect ratio. The method then identifies a quadrilateral that matches the expected aspect ratio and performs an optical character recognition algorithm on the rectified model. A similar method is performed on multiple cards in an image. The results of the analysis of each of the cards are compared to improve accuracy of the data.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: September 16, 2014
    Assignee: Google Inc.
    Inventors: Xiaohang Wang, Farhan Shamsi, Yakov Okshtein, Sanjiv Kumar, Henry Allan Rowley, Marcus Quintana Mitchell, Debra Lin Repenning, Alessandro Bissacco, Justin Scheiner, Leon Palm
  • Publication number: 20140257747
    Abstract: Receiving point of interest zones and alerts on user devices comprises communicating, by a user computing device to a remote computing device, a request for point of interest data corresponding to points of interest within a proximity of the user device; presenting the received point of interest data; identifying a particular point of interest; and outputting an alert regarding the particular point of interest. Receiving point of interest zones on user devices comprises communicating a request for point of interest data; receiving the point of interest data from the remote network device wherein a size of the point of interest zone is determined based on a density of points of interest in the proximity of the user, and wherein the shape of the point of interest zone is expanded in a direction of travel and contracted in the opposite direction; and presenting the received point of interest data.
    Type: Application
    Filed: March 5, 2013
    Publication date: September 11, 2014
    Applicant: GOOGLE INC.
    Inventors: Debra Lin Repenning, Ray Xiaohang Wang, Yakov Okshtein, Farhan Shamsi, David Singleton, Lixin Zhang, Alan Newberger, Chandrasekhar Thota, Douglas Alexander Gresham, Nicholas Fey, Marcus Alexander Folster, Petra Cross, Andres Morales
  • Publication number: 20140256357
    Abstract: Receiving point of interest zones and alerts on user devices comprises communicating, by a user computing device to a remote computing device, a request for point of interest data corresponding to points of interest within a proximity of the user device; presenting the received point of interest data; identifying a particular point of interest; and outputting an alert regarding the particular point of interest. Receiving point of interest zones on user devices comprises communicating a request for point of interest data; receiving the point of interest data from the remote network device wherein a size of the point of interest zone is determined based on a density of points of interest in the proximity of the user, and wherein the shape of the point of interest zone is expanded in a direction of travel and contracted in the opposite direction; and presenting the received point of interest data.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 11, 2014
    Inventors: Ray Xiaohang Wang, Farhan Shamsi, Yakov Okshtein, David Singleton, Douglas Alexander Gresham, Alan Newberger, Lixin Zhang
  • Patent number: 8831329
    Abstract: Embodiments herein provide computer-implemented techniques for allowing a user computing device to extract financial card information using optical character recognition (“OCR”). Extracting financial card information may be improved by applying various classifiers and other transformations to the image data. For example, applying a linear classifier to the image to determine digit locations before applying the OCR algorithm allows the user computing device to use less processing capacity to extract accurate card data. The OCR application may train a classifier to use the wear patterns of a card to improve OCR algorithm performance. The OCR application may apply a linear classifier and then a nonlinear classifier to improve the performance and the accuracy of the OCR algorithm. The OCR application uses the known digit patterns used by typical credit and debit cards to improve the accuracy of the OCR algorithm.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: September 9, 2014
    Assignee: Google Inc.
    Inventors: Sanjiv Kumar, Henry Allan Rowley, Xiaohang Wang, Jose Jeronimo Moreira Rodrigues
  • Patent number: 8805125
    Abstract: Comparing extracted card data from a continuous scan comprises receiving, by one or more computing devices, a digital scan of a card; obtaining a plurality of images of the card from the digital scan of the physical card; performing an optical character recognition algorithm on each of the plurality of images; comparing results of the application of the optical character recognition algorithm for each of the plurality of images; determining if a configured threshold of the results for each of the plurality of images match each other; and verifying the results when the results for each of the plurality of images match each other. Threshold confidence level for the extracted card data can be employed to determine the accuracy of the extraction. Data is further extracted from blended images and three-dimensional models of the card. Embossed text and holograms in the images may be used to prevent fraud.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: August 12, 2014
    Assignee: Google Inc.
    Inventors: Sanjiv Kumar, Henry Allan Rowley, Xiaohang Wang, Yakov Okshtein, Farhan Shamsi, Alessandro Bissacco
  • Patent number: 8798646
    Abstract: A geofence management system obtains location data for points of interest. The geofence management system determines, at the option of the user, the location of a user mobile computing device relative to specific points of interest and alerts the user when the user nears the points of interest. The geofence management system, however, determines relationships among the identified points of interest, and associates or “clusters” the points of interest together based on the determined relationships. Rather than establishing separate geofences for multiple points of interest, and then alerting the user each time the user's mobile device enters each geofence boundary, the geofence management system establishes a single geofence boundary for the associated points of interest. When the user's mobile device enters the clustered geofence boundary, the geofence management system notifies the user device to alert the user of the entrance event. The user then receives the clustered, geofence-based alert.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: August 5, 2014
    Assignee: Google Inc.
    Inventors: Xiaohang Wang, Farhan Shamsi, Yakov Okshtein, David Singleton, Debra Lin Repenning, Lixin Zhang, Marcus Alexander Foster
  • Patent number: 8755824
    Abstract: A geofence management system obtains location data for points of interest. The geofence management system determines, at the option of the user, the location of a user mobile computing device relative to specific points of interest and alerts the user when the user nears the points of interest. The geofence management system, however, determines relationships among the identified points of interest, and associates or “clusters” the points of interest together based on the determined relationships. Rather than establishing separate geofences for multiple points of interest, and then alerting the user each time the user's mobile device enters each geofence boundary, the geofence management system establishes a single geofence boundary for the associated points of interest. When the user's mobile device enters the clustered geofence boundary, the geofence management system notifies the user device to alert the user of the entrance event. The user then receives the clustered, geofence-based alert.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: June 17, 2014
    Assignee: Google Inc.
    Inventors: Xiaohang Wang, Farhan Shamsi, Yakov Okshtein, David Singleton, Debra Lin Repenning, Lixin Zhang, Marcus Alexander Foster
  • Patent number: 8666434
    Abstract: A location of a network user computing device is determined relative to a location of a point of interest. If the user device is determined to be stationary, the user device is monitored for movement, the movement resulting in re-determining the location of the user device relative to a location of the point of interest. If the user device is determined to be moving, the velocity of the user device is matched with a predetermined velocity, and a preliminary estimated time of arrival to the point of interest is determined based on the predetermined velocity matched to the user device. At a later time that is based on a function of the preliminary estimated time of arrival, an estimated time of arrival to the point of interest is verified based on the predetermined velocity matched to the user device.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: March 4, 2014
    Assignee: Google Inc.
    Inventors: Michael James Taylor, Ray Xiaohang Wang, Yakov Okshtein, Farhan Shamsi, Mohammad Hossain Sheikh Attar
  • Publication number: 20110225076
    Abstract: Systems and methods for detecting fraudulent merchants using the content of orders completed by the merchants. A fraud detection engine of a fraud detection system generates a fraud detection model using feature data extracted from order content data for known fraudulent and known non-fraudulent merchants. The fraud detection engine executes the model using feature data extracted from order content data for a target merchant to determine a fraud risk associated with the target merchant. If the fraud risk of the merchant is indicative of a fraudulent merchant, the fraud detection system can issue a request to a fraud analyst to review the target merchant further. The results of the fraud analyst's review can be used to update the fraud detection model.
    Type: Application
    Filed: March 9, 2010
    Publication date: September 15, 2011
    Applicant: Google Inc.
    Inventors: Xiaohang Wang, Andrew Robert Mitchell, Lawrence Poi Heng Ip, Shubin Zhao, Andrew John Nowka
  • Publication number: 20070136036
    Abstract: A method and system for deploying radio frequency identification (RFID) systems. The system presents the floor plan of the site to which the RFID system is to be deployed. A user may add representations of RFID interrogators to the site and use information that the system presents to determine ideal location, orientation, power levels and other parameters of an effective and efficient RFID system. An embodiment of the system will then configure and test those settings on the actual interrogators. Site survey information may be entered into the system to facilitate better calibration. The system may be employed within a larger management system for enhanced RFID system performance after deployment.
    Type: Application
    Filed: December 8, 2005
    Publication date: June 14, 2007
    Inventors: Patrick Sweeney, Xiaohang Wang