Patents by Inventor Beilei Xu

Beilei Xu 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).

  • Publication number: 20120310666
    Abstract: The present disclosure provides a method of producing a personalized medical record, comprising: incorporating at least a portion of a prerecorded stock tutorial video having stock information and one or more uncompleted segments for inserting personalized medical information onto a single recording medium. The personalized medical information can include personalized health information including vital health statistics. The method combines the at least a portion of the prerecorded stock tutorial video including the stock information on a variety of medical maladies with the personalized medical information. The stock tutorial video can include at least one predeterminable insertion point within the uncompleted segments for inserting the personalized medical information.
    Type: Application
    Filed: June 1, 2011
    Publication date: December 6, 2012
    Applicant: Xerox Corporation
    Inventors: BEILEI XU, STUART A. SCHWEID, ROBERT P. LOCE, LEE ANNE WILLIAMS
  • Publication number: 20120289850
    Abstract: What is disclosed is a system and method for monitoring respiration of a subject or subject of interest using a thermal imaging system with single or multiple spectral bands set to a temperature range of a facial region of that person. Temperatures of extremities of the head and face are used to locate facial features in the captured thermal images, i.e., nose and mouth, which are associated with respiration. The RGB signals obtained from the camera are plotted to obtain a respiration pattern. From the respiration pattern, a rate of respiration is obtained. The system includes display and communication interfaces wherein alerts can be activated if the respiration rate falls outside a level of acceptability. The teachings hereof find their uses in an array of devices such as, for example, devices which monitor the respiration of an infant to signal the onset of a respiratory problem or failure.
    Type: Application
    Filed: May 9, 2011
    Publication date: November 15, 2012
    Applicant: XEROX CORPORATION
    Inventors: Beilei XU, Lalit Keshav MESTHA, Graham PENNINGTON
  • Publication number: 20120263357
    Abstract: What is disclosed is a novel system and method for identifying an individual in an IR image involves the following. Intensity values are collected at N wavelengths for each pixel in an IR video-based image. The intensity values are collected using an IR imaging system having an IR detector and an IR Illuminator. The intensity values are then used to identify pixels of human skin in the IR image. If human skin is identified in the IR image then, the human hand is identified in the IR image from the human skin to distinguish the hand from the background. Vein patterns in the hand are then located and extracted. A reference vein pattern is retrieved from a database of known vein patterns for individuals, and a comparison is made to determine a match. If a match is determined, then the individual in the captured IR image can be identified.
    Type: Application
    Filed: April 15, 2011
    Publication date: October 18, 2012
    Applicant: XEROX CORPORATION
    Inventors: Beilei XU, Lalit Keshav MESTHA
  • Publication number: 20120237087
    Abstract: What is disclosed is a system and method for image quality (IQ) defect detection via classification of halftone dots present on customer prints. In one embodiment, spatially-varying thresholds are applied on the sensed image in order to classify the halftone dots for IQ defect detection. The resolving power of the sensor is characterized and the sensor responses to patches printed with the print device are characterized. A de-blurring filter is designed which is appropriate for compensating the characterized resolving power of the sensor. Image enhancement is applied to the image using the de-blurring filter. Halftone dots present on the prints are classified by analyzing the enhanced image with the results of the sensor response characterization. Once classified, single separation halftone dot images can be more readily analyzed for defects. The present method allows sensor resolution as low as the size of the halftone dots of the printer under test.
    Type: Application
    Filed: March 16, 2011
    Publication date: September 20, 2012
    Applicant: XEROX CORPORATION
    Inventors: Wencheng WU, Beilei XU, Edul N. DALAL
  • Publication number: 20120224872
    Abstract: A sensor used for determining area coverages of each colorant in a printed image is provided. The sensor includes a plurality of sensing elements for determining area coverages of each colorant in a printed image that includes a plurality of colorants including a black colorant. One of the sensing elements is an infrared sensing element configured to measure infrared reflection, and the others of the sensing elements are each configured to detect a visible color.
    Type: Application
    Filed: March 2, 2011
    Publication date: September 6, 2012
    Applicant: XEROX CORPORATION
    Inventors: Wencheng WU, Edul N. Dalal, Beilei Xu
  • Publication number: 20120207340
    Abstract: Methods and systems for discriminating between tires. One or more images of an unknown tire are received. One or more tread features are extracted from the images. The class of the unknown tire is determined using a classifier that matches the tread features to known tread features.
    Type: Application
    Filed: February 14, 2011
    Publication date: August 16, 2012
    Applicant: XEROX CORPORATION
    Inventors: Orhan Bulan, Robert P. Loce, Edgar A. Bernal, Wencheng Wu, Beilei Xu, Thomas F. Wade
  • Publication number: 20120200682
    Abstract: What is disclosed is a novel system and method for simultaneous spectral decomposition suitable for image object identification and categorization for scenes and objects under analysis. The present system captures different spectral planes simultaneously using a Fabry-Perot multi-filter grid each tuned to a specific wavelength. A method for classifying pixels in the captured image is provided. The present system and method finds its uses in a wide array of applications such as, for example, occupancy detection in a transportation management system and in medical imaging and diagnosis for healthcare management. The teachings hereof further find their uses in other applications where there is a need to capture a two dimensional view of a scene and decompose the scene into its spectral bands such that objects in the image can be appropriately identified.
    Type: Application
    Filed: February 8, 2011
    Publication date: August 9, 2012
    Applicant: Xerox Corporation
    Inventors: Lalit Keshav Mestha, Beilei Xu, Peter Paul
  • Patent number: 8233669
    Abstract: A systems and methods for providing an image forming machine capable of monitoring the image quality of images that the image forming machine produces and detecting changes in the image quality. The monitoring system using statistical techniques to fit predetermined models to a measured image quality of time sequence of formed images. The predetermined models used to find current and predicted values of image quality and notifying a user or service provider when the image quality has changed.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: July 31, 2012
    Assignee: Xerox Corporation
    Inventors: Wencheng Wu, John C. Handley, Beilei Xu
  • Publication number: 20120188565
    Abstract: As set forth herein, computer-implemented methods and systems facilitate detecting non-uniformities (e.g., streaks or other defects) in a scanned image, and correcting the non-uniformities while accounting for geometric distortion therein. For instance a scanned image may include a light streak (e.g., higher L* values than expected) down the page at a given distance from a page edge. Paper shrinkage may also cause the image to be magnified relative to the page. Correction values (e.g., L* knockdown values or the like) are generated to bring the non-uniform L* values down to a darker level. To account for the magnification of the image, the correction values are electronically registered to uniformity data for the page, and applied at the correct location to account for the magnification. The corrected image is then printed by a marking device.
    Type: Application
    Filed: January 24, 2011
    Publication date: July 26, 2012
    Applicant: XEROX CORPORATION
    Inventors: Stuart A. Schweid, Joseph C. Sheflin, Beilei Xu, Robert P. Loce
  • Publication number: 20120188592
    Abstract: Methods and systems of filtering non-actionable alerts are disclosed. A processing device receives an alert from a printing device and determines a page count for the printing device. The processing device compares the page count with at least one threshold value associated with the alert and the printing device. In response to the page count satisfying the at least one threshold value, the processing device identifies the alert as a valid alert.
    Type: Application
    Filed: January 24, 2011
    Publication date: July 26, 2012
    Applicant: XEROX CORPORATION
    Inventors: John C. Handley, Beilei Xu, Jeremy Lee Reitz
  • Publication number: 20120182571
    Abstract: A method has been developed for detecting defects in printed images. The method includes operating a printer to print a first printed image and a second image, where the second image is a duplicate of the first printed image. The method further includes generating image data that correspond to the first printed image and the second printed image, and identifying image defects using differences between the image data generated for the first image and the image data generated for the second image.
    Type: Application
    Filed: January 18, 2011
    Publication date: July 19, 2012
    Applicant: XEROX CORPORATION
    Inventors: Wencheng Wu, Beilei Xu
  • Patent number: 8208175
    Abstract: A target pixel is processed according to a blended combination of two or more error diffusion techniques. For example, the two or more techniques may include a standard error diffusion technique and rank ordered error diffusion. Additionally, or alternatively, a quantization resolution is selected for the target pixel based on information regarding the pixel. For example, a quantization resolution is selected based on a relative position of the target pixel or based on a value of the target pixel and/or values of pixels neighboring the target pixel.
    Type: Grant
    Filed: April 13, 2005
    Date of Patent: June 26, 2012
    Assignee: Xerox Corporation
    Inventors: Beilei Xu, Robert Paul Loce
  • Publication number: 20120147429
    Abstract: Provided are methods, apparatus and systems related to watermark encoding via pixel spacing modulation. According to one exemplary embodiment, a method modulates the pixel spacing associated with an image to encode a watermark.
    Type: Application
    Filed: December 13, 2010
    Publication date: June 14, 2012
    Applicant: XEROX CORPORATION
    Inventors: Beilei Xu, Joseph C. Sheflin, Jack T. Lestrange, Robert P. Loce, Shen-Ge Wang
  • Publication number: 20120148087
    Abstract: Provided are methods, apparatus and systems related to watermark decoding via spectral analysis of an image. According to one exemplary method, spectral analysis is performed to decode a watermark within an image, where the pixel spacing associated with the image was modulated to encode the watermark.
    Type: Application
    Filed: December 13, 2010
    Publication date: June 14, 2012
    Applicant: XEROX CORPORATION
    Inventors: Beilei Xu, Joseph C. Sheflin, Shen-Ge Wang, Robert P. Loce, Jack T. LeStrange
  • Publication number: 20120087013
    Abstract: Exemplary embodiments provide materials and methods for lenticular printing devices, wherein both a lenticular lens sheet and an interlaced composite image can be formed using an imaging device to provide a precise registration translated from a color-to-color registration.
    Type: Application
    Filed: October 6, 2010
    Publication date: April 12, 2012
    Applicant: XEROX CORPORATION
    Inventors: Chu-Heng Liu, Beilei Xu
  • Patent number: 8126199
    Abstract: Systems and methods monitor jets in a color imaging device to identify and correct faulty jets without interrupting a print job. The relationship between the output of the imaging device and the sensor values of a sensor is characterized in a correspondence table. Thereafter, an image produced by the imaging device is measured by the sensor at multiple locations for a group of jets including jets each corresponding a different color of the imaging device color space. The measured output at each of the multiple locations is compared with two or more sets of predicted sensor outputs generated from the color coordinates used to produce the image at the corresponding location and the correspondence table, the set of predicted sensor outputs including at least one predicted sensor output generated with at least one jet set as faulty.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: February 28, 2012
    Assignee: Xerox Corporation
    Inventors: Wencheng Wu, Beilei Xu
  • Patent number: 8115795
    Abstract: An optical scanning device projects an image onto a photoreceptor within a print system. A laser light source generates a plurality of light beam outputs, wherein the light beam outputs are arranged in a two-dimensional parallelogram array within a substantially horizontal axis and a substantially vertical axis that is perpendicular to the horizontal axis. The two-dimensional parallelogram array has an odd number of rows of light beam outputs, wherein each row has an equal even number of light beam outputs. A rotating polygon mirror includes a plurality of deflecting surfaces, each of the deflecting surfaces deflects the light beams emitted from the laser light source. The light beam output array projects a first swath N onto the photoreceptor via the rotating mirror and swaths [N+1, N+2, . . . ] are subsequently placed at a level one-half down the number of light beam outputs of the previous swath. Each swath has the identical number of light emitting outputs as the two-dimensional array.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: February 14, 2012
    Assignee: Xerox Corporation
    Inventors: Robert P. Loce, Beilei Xu
  • Publication number: 20120014566
    Abstract: A method for detecting motion quality error of printed documents having text in a printing system includes: printing a document having text lines, each text line comprising a plurality of characters; scanning the printed document to generate a scanned image; detecting positions in a process direction of the printing system of one of text lines and characters in the scanned image; determining position errors in the process direction in the printed document based on the detected positions in the scanned image; determining at least one motion quality defect of the printing system in the process direction based on the determined position errors; and initiating an activity associated with said printing system in response to a motion quality error having been determined. A system for detecting motion quality error of printed documents is also disclosed.
    Type: Application
    Filed: July 19, 2010
    Publication date: January 19, 2012
    Applicant: XEROX CORPORATION
    Inventors: Beilei Xu, Wencheng Wu, Peter Paul, Palghat Ramesh
  • Publication number: 20110299099
    Abstract: What is disclosed is a novel system and method for banding defect detection in user document images to improve image quality trend analysis in multifunction digital imaging system architectures. The present banding detection process uses region-based, time sequence analysis, and graylevels of image regions in a collection of a sequence of regions, to improve banding detection. The present method independently analyzes the colorant separations to detect banding due to sources that are colorant-dependent, e.g., due to a single developer housing. This identification can be performed in the presence of multiple banding defects.
    Type: Application
    Filed: June 8, 2010
    Publication date: December 8, 2011
    Applicant: Xerox Corporation
    Inventors: Beilei Xu, Wencheng Wu
  • Patent number: 8049929
    Abstract: Aspects of color of a halftoned image are controlled or adjusted. A method for adjustment can include determining a color description of a color of an area or window associated with a target halftoned pixel, determining a desired adjustment to the color associated with the target pixel, determining a color change value based on the desired adjustment and the color description associated with the target pixel, combining the color change value with at least one value of the target halftoned pixel, thereby generating at least one combined target pixel value and quantizing the at least one combined target pixel value. For instance error diffusion and/or rank-ordered error diffusion is used to perform the quantization. Color adjustments can be based on user preference and/or calibration compensations between original and target devices.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: November 1, 2011
    Assignee: Xerox Corporation
    Inventors: Robert Paul Loce, Beilei Xu, Raja Bala