Patents by Inventor Wa James Tam

Wa James Tam 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: 8982192
    Abstract: Three-dimensional visual information may be displayed on curvilinear display surfaces. The display devices can include a control system configured to execute various methods for obtaining the visual information and displaying the visual information on the curvilinear display surface. If the visual information is intended for display on a first display surface, the control system can modify the visual information for display on the curvilinear display surface. The control system also can modify the visual information based upon relative positions and orientations of a viewer, projector, and/or the display surface, as well as to correct for anticipated environmental or optical interference. The control system outputs the visual information or modified visual information to a display device for display on a curvilinear display surface.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: March 17, 2015
    Assignee: Her Majesty the Queen in right of Canada as represented by the Minister of Industry, through the Communications Research Centre Canada
    Inventors: Wa James Tam, Carlos Alberto Vázquez Hidalgo-Gato
  • Patent number: 8488868
    Abstract: The invention relates to a method and an apparatus for generating a depth map from a digital monoscopic color image. The method includes the following general steps: a) obtaining a first color component of the MCI, said first color component corresponding to partial color information of the MCI; and, b) assigning depth values to pixels of the MCI based on values of the first color component of respective pixels for forming the depth map for the MCI. In one embodiment, the depth values are generated by adjusting and/or scaling of pixel values of the Cr chroma component of the monoscopic source color image in the Y?CbCr color system.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: July 16, 2013
    Assignee: Her Majesty the Queen in Right of Canada, as represented by the Minister of Industry, through the Communications Research Centre Canada
    Inventors: Wa James Tam, Carlos Vázquez
  • Patent number: 8384763
    Abstract: Depth maps are generated from a monoscopic source images and asymmetrically smoothed to a near-saturation level. Each depth map contains depth values focused on edges of local regions in the source image. Each edge is defined by a predetermined image parameter having an estimated value exceeding a predefined threshold. The depth values are based on the corresponding estimated values of the image parameter. The depth map is used to process the source image by a depth image based rendering algorithm to create at least one deviated image, which forms with the source image a set of monoscopic images. At least one stereoscopic image pair is selected from such a set for use in generating different viewpoints for multiview and stereoscopic purposes, including still and moving images.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: February 26, 2013
    Assignee: Her Majesty the Queen in right of Canada as represented by the Minster of Industry, Through the Communications Research Centre Canada
    Inventors: Wa James Tam, Liang Zhang
  • Publication number: 20130009952
    Abstract: Depth maps are generated from a monoscopic source images and asymmetrically smoothed to a near-saturation level. Each depth map contains depth values focused on edges of local regions in the source image. Each edge is defined by a predetermined image parameter having an estimated value exceeding a predefined threshold. The depth values are based on the corresponding estimated values of the image parameter. The depth map is used to process the source image by a depth image based rendering algorithm to create at least one deviated image, which forms with the source image a set of monoscopic images. At least one stereoscopic image pair is selected from such a set for use in generating different viewpoints for multiview and stereoscopic purposes, including still and moving images.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 10, 2013
    Inventors: Wa James Tam, Liang Zhang
  • Publication number: 20120256902
    Abstract: Technologies are generally described herein for displaying stereoscopic three-dimensional and multiview stereoscopic three-dimensional visual information on curvilinear display surfaces. The display devices can include a control system configured to execute various methods for obtaining the visual information and displaying the visual information on the curvilinear display surface. If the visual information is intended for display on a first display surface, the control system can modify the visual information for display on the curvilinear display surface. The control system also can modify the visual information based upon relative positions and orientations of a viewer, projector, and/or the display surface, as well as to correct for anticipated environmental or optical interference. The control system outputs the visual information or modified visual information to a display device for display on a curvilinear display surface.
    Type: Application
    Filed: April 7, 2011
    Publication date: October 11, 2012
    Inventors: Wa James Tam, Carlos Alberto Vázquez Hidalgo-Gato
  • Patent number: 8213711
    Abstract: The invention relates to a method and a graphical user interface for modifying a depth map for a digital monoscopic color image. The method includes interactively selecting a region of the depth map based on color of a target region in the color image, and modifying depth values in the thereby selected region of the depth map using a depth modification rule. The color-based pixel selection rules for the depth map and the depth modification rule selected based on one color image from a video sequence may be saved and applied to automatically modify depths maps of other color images from the same sequence.
    Type: Grant
    Filed: July 23, 2009
    Date of Patent: July 3, 2012
    Assignee: Her Majesty the Queen in Right of Canada as represented by the Minister of Industry, Through the Communications Research Centre Canada
    Inventors: Wa James Tam, Carlos Vázquez
  • Publication number: 20100080448
    Abstract: The invention relates to a method and a graphical user interface for modifying a depth map for a digital monoscopic color image. The method includes interactively selecting a region of the depth map based on color of a target region in the color image, and modifying depth values in the thereby selected region of the depth map using a depth modification rule. The color-based pixel selection rules for the depth map and the depth modification rule selected based on one color image from a video sequence may be saved and applied to automatically modify depths maps of other color images from the same sequence.
    Type: Application
    Filed: July 23, 2009
    Publication date: April 1, 2010
    Inventors: Wa James TAM, Carlos Vázquez
  • Publication number: 20080247670
    Abstract: The invention relates to a method and an apparatus for generating a depth map from a digital monoscopic color image. The method includes the following general steps: a) obtaining a first color component of the MCI, said first color component corresponding to partial color information of the MCI; and, b) assigning depth values to pixels of the MCI based on values of the first color component of respective pixels for forming the depth map for the MCI. In one embodiment, the depth values are generated by adjusting and/or scaling of pixel values of the Cr chroma component of the monoscopic source color image in the Y?CbCr color system.
    Type: Application
    Filed: April 2, 2008
    Publication date: October 9, 2008
    Inventors: Wa James TAM, Carlos Vazquez
  • Patent number: 6678323
    Abstract: This invention relates to reducing bandwidth requirements for stereoscopic imagery and video signals. The invention comprises a method of producing two streams of images or signals for producing images, separately for the left eye and for the right eye. One image of each stereoscopic pair in the streams is of reduced quality relative to the other. On occurrence of a significant change in image content, or similar occurrence, the image quality of the two streams are switched or transposed, whereby the higher quality image is seen alternately by one eye and then the other. Intervals between switching are indeterminate, and such switching is continued for the duration of the streams of images or video signals.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: January 13, 2004
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of Industry through Communications Research Centre
    Inventors: Wa James Tam, Lew Bohdan Stelmach
  • Publication number: 20020097319
    Abstract: This invention relates to reducing bandwidth requirements for stereoscopic imagery and video signals. The invention comprises a method of producing two streams of images or signals for producing images, separately for the left eye and for the right eye. One image of each stereoscopic pair in the streams is of reduced quality relative to the other. On occurrence of a significant change in image content, or similar occurrence, the image quality of the two streams are switched or transposed, whereby the higher quality image is seen alternately by one eye and then the other. Intervals between switching are indeterminate, and such switching is continued for the duration of the streams of images or video signals.
    Type: Application
    Filed: January 24, 2001
    Publication date: July 25, 2002
    Inventors: Wa James Tam, Lew Bohdan Stelmach