Patents by Inventor DAVID PETER MORGAN-MAR

DAVID PETER MORGAN-MAR 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: 20190073792
    Abstract: A system and method determining a camera pose. The method comprises receiving a first image and a second image, the first and second images being associated with a camera pose and a height map for pixels in each corresponding image, and determining a mapping between the first image and the second image using the corresponding height maps, the camera pose and a mapping of the second image to an orthographic view. The method further comprises determining alignment data between the first image transformed using the determined mapping and the second image and determining a refined camera pose based on the determined alignment data and alignment data associated with at least one other camera pose.
    Type: Application
    Filed: August 29, 2018
    Publication date: March 7, 2019
    Inventors: Peter Alleine Fletcher, David Peter Morgan-Mar, Matthew Raphael Arnison, Timothy Stephen Mason
  • Patent number: 10026183
    Abstract: A method of determining at least two motion values of an object moving axially in a scene. A first and second image of the object in the scene is captured with an image capture device. The object is axially displaced in the scene between the captured images with respect to a sensor plane of the image capture device. A variation in blur between the first and second captured images is determined. A scale change of the object between the first and second captured images is determined. Using the determined scale change and variation in blur, at least two motion values of the object in the scene are determined. The motion values identify the depths of the object in the first and second captured images and axial motion of the object in the scene.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: July 17, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: David Peter Morgan-Mar, Matthew Raphael Arnison
  • Patent number: 9639948
    Abstract: Methods, apparatuses, and computer readable storage media are provided for determining a depth measurement of a scene using an optical blur difference between two images of the scene. Each image is captured using an image capture device with different image capture device parameters. A corresponding image patch is identified from each of the captured images, motion blur being present in each of the image patches. A kernel of the motion blur in each of the image patches is determined. The kernel of the motion blur in at least one images patch is used to generate a difference convolution kernel. A selected first image patch is convolved with the generated difference convolution kernel to generate a modified image patch. A depth measurement of the scene is determined from an optical blur difference between the modified image patch and the remaining image patch.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: May 2, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: David Peter Morgan-Mar, Matthew Raphael Arnison
  • Publication number: 20160321819
    Abstract: A method of determining at least two motion values of an object moving axially in a scene. A first and second image of the object in the scene is captured with an image capture device. The object is axially displaced in the scene between the captured images with respect to a sensor plane of the image capture device. A variation in blur between the first and second captured images is determined. A scale change of the object between the first and second captured images is determined. Using the determined scale change and variation in blur, at least two motion values of the object in the scene are determined. The motion values identify the depths of the object in the first and second captured images and axial motion of the object in the scene.
    Type: Application
    Filed: April 29, 2016
    Publication date: November 3, 2016
    Inventors: DAVID PETER MORGAN-MAR, MATTHEW RAPHAEL ARNISON
  • Patent number: 9117277
    Abstract: Methods for determining a depth measurement of a scene which involve capturing at least two images of the scene with different camera parameters, and selecting corresponding image patches in each scene. A first approach calculates a plurality of complex responses for each image patch using a plurality of different quadrature filters, each complex response having a magnitude and a phase, assigns, for each quadrature filter, a weighting to the complex responses in the corresponding image patches, the weighting being determined by a relationship of the phases of the complex responses, and determines the depth measurement of the scene from a combination of the weighted complex responses.
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: August 25, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: David Peter Morgan-Mar, Kieran Gerard Larkin, Matthew Raphael Arnison, Peter Alleine Fletcher, Tuan Quang Pham
  • Publication number: 20150178935
    Abstract: Methods, apparatuses, and computer readable storage media are provided for determining a depth measurement of a scene using an optical blur difference between two images of the scene. Each image is captured using an image capture device with different image capture device parameters. A corresponding image patch is identified from each of the captured images, motion blur being present in each of the image patches. A kernel of the motion blur in each of the image patches is determined. The kernel of the motion blur in at least one images patch is used to generate a difference convolution kernel. A selected first image patch is convolved with the generated difference convolution kernel to generate a modified image patch. A depth measurement of the scene is determined from an optical blur difference between the modified image patch and the remaining image patch.
    Type: Application
    Filed: December 22, 2014
    Publication date: June 25, 2015
    Inventors: David Peter Morgan-Mar, Matthew Raphael Arnison
  • Patent number: 8989517
    Abstract: A method of modifying the blur in at least a part of an image of a scene captures at least two images of the scene with different camera parameters to produce a different amount of blur in each image. A corresponding patch in each of the captured images is selected each having an initial amount of blur is used to calculate a set of frequency domain pixel values from a function of transforms of the patches. Each of the pixel values in the set are raised to a predetermined power, forming an amplified set of frequency domain pixel values. The amplified set of frequency domain pixel values is combined with the pixels of the patch in one of the captured images to produce an output image patch with blur modified relative to the initial amount of blur in the image patch.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: March 24, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: David Peter Morgan-Mar, Kieran Gerard Larkin, Matthew Raphael Arnison
  • Publication number: 20140152886
    Abstract: A method of modifying the blur in at least a part of an image of a scene captures at least two images of the scene with different camera parameters to produce a different amount of blur in each image. A corresponding patch in each of the captured images is selected each having an initial amount of blur is used to calculate a set of frequency domain pixel values from a function of transforms of the patches. Each of the pixel values in the set are raised to a predetermined power, forming an amplified set of frequency domain pixel values. The amplified set of frequency domain pixel values is combined with the pixels of the patch in one of the captured images to produce an output image patch with blur modified relative to the initial amount of blur in the image patch.
    Type: Application
    Filed: November 13, 2013
    Publication date: June 5, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: David Peter MORGAN-MAR, Kieran Gerard LARKIN, Matthew Raphael ARNISON
  • Publication number: 20130266210
    Abstract: Methods for determining a depth measurement of a scene which involve capturing at least two images of the scene with different camera parameters, and selecting corresponding image patches in each scene. A first approach calculates a plurality of complex responses for each image patch using a plurality of different quadrature filters, each complex response having a magnitude and a phase, assigns, for each quadrature filter, a weighting to the complex responses in the corresponding image patches, the weighting being determined by a relationship of the phases of the complex responses, and determines the depth measurement of the scene from a combination of the weighted complex responses.
    Type: Application
    Filed: April 2, 2013
    Publication date: October 10, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: DAVID PETER MORGAN-MAR, KIERAN GERARD LARKIN, MATTHEW RAPHAEL ARNISON, PETER ALLEINE FLETCHER, TUAN QUANG PHAM