Patents by Inventor Aswin C. Sankaranarayanan

Aswin C. Sankaranarayanan 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: 20230410341
    Abstract: A method for a passive single-viewpoint 3D imaging system comprises capturing an image from a camera having one or more phase masks. The method further includes using a reconstruction algorithm, for estimation of a 3D or depth image.
    Type: Application
    Filed: April 26, 2023
    Publication date: December 21, 2023
    Applicants: William Marsh Rice University, Carnegie Mellon University
    Inventors: Yicheng Wu, Vivek Boominathan, Huaijin Chen, Aswin C. Sankaranarayanan, Ashok Veeraraghavan
  • Patent number: 11676294
    Abstract: A method for a passive single-viewpoint 3D imaging system comprises capturing an image from a camera having one or more phase masks. The method further includes using a reconstruction algorithm, for estimation of a 3D or depth image.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: June 13, 2023
    Assignees: William Marsh Rice University, Carnegie Mellon University
    Inventors: Yicheng Wu, Vivek Boominathan, Huaijin Chen, Aswin C. Sankaranarayanan, Ashok Veeraraghavan
  • Patent number: 11493634
    Abstract: Embodiments described herein are generally directed to a device that monitors for the presence of objects passing through or impinging on a virtual shell near the device, referred to herein as a “light curtain”, which is created by rapidly rotating a line sensor and a line laser in synchrony. The boundaries of the light curtain are defined by a sweeping line defined by the intersection of the sensing and illumination planes.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: November 8, 2022
    Assignee: CARNEGIE MELLON UNIVERSITY
    Inventors: Srinivasa Narasimhan, Jian Wang, Aswin C. Sankaranarayanan, Joseph Bartels, William Whittaker
  • Publication number: 20210033733
    Abstract: Embodiments described herein are generally directed to a device that monitors for the presence of objects passing through or impinging on a virtual shell near the device, referred to herein as a “light curtain”, which is created by rapidly rotating a line sensor and a line laser in synchrony. The boundaries of the light curtain are defined by a sweeping line defined by the intersection of the sensing and illumination planes.
    Type: Application
    Filed: March 11, 2019
    Publication date: February 4, 2021
    Inventors: Srinivasa Narasimhan, Jian Wang, Aswin C. Sankaranarayanan, Joseph Bartels, William Whittaker
  • Publication number: 20200349729
    Abstract: A method for a passive single-viewpoint 3D imaging system comprises capturing an image from a camera having one or more phase masks. The method further includes using a reconstruction algorithm, for estimation of a 3D or depth image.
    Type: Application
    Filed: May 1, 2020
    Publication date: November 5, 2020
    Applicants: William Marsh Rice University, Carnegie Mellon University
    Inventors: Yicheng Wu, Vivek Boominathan, Hauijin Chen, Aswin C. Sankaranarayanan, Ashok Veeraraghavan
  • Patent number: 10176571
    Abstract: A compressive sensing system for dynamic video acquisition. The system includes a video signal interface including a compressive imager configured to acquire compressive sensed video frame data from an object, a video processing unit including a processor and memory. The video processing unit is configured to receive the compressive sensed video frame data from the video signal interface. The memory comprises computer readable instructions that when executed by the processor cause the processor to generate a motion estimate from the compressive sensed video frame data and generate dynamical video frame data from the motion estimate and the compressive sensed video frame data. The dynamical video frame data may be output.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: January 8, 2019
    Assignee: William Marsh Rice University
    Inventors: Jianing V. Shi, Aswin C. Sankaranarayanan, Christoph Emanuel Studer, Richard G. Baraniuk
  • Patent number: 9654752
    Abstract: A new framework for video compressed sensing models the evolution of the image frames of a video sequence as a linear dynamical system (LDS). This reduces the video recovery problem to first estimating the model parameters of the LDS from compressive measurements, from which the image frames are then reconstructed. We exploit the low-dimensional dynamic parameters (state sequence) and high-dimensional static parameters (observation matrix) of the LDS to devise a novel compressive measurement strategy that measures only the dynamic part of the scene at each instant and accumulates measurements over time to estimate the static parameters. This enables us to lower the compressive measurement rate considerably yet obtain video recovery at a high frame rate that is in fact inversely proportional to the length of the video sequence. This property makes our framework well-suited for high-speed video capture and other applications.
    Type: Grant
    Filed: June 18, 2011
    Date of Patent: May 16, 2017
    Assignee: William Marsh Rice University
    Inventors: Richard G. Baraniuk, Aswin C. Sankaranarayanan
  • Publication number: 20170103529
    Abstract: A compressive sensing system for dynamic video acquisition. The system includes a video signal interface including a compressive imager configured to acquire compressive sensed video frame data from an object, a video processing unit including a processor and memory. The video processing unit is configured to receive the compressive sensed video frame data from the video signal interface. The memory comprises computer readable instructions that when executed by the processor cause the processor to generate a motion estimate from the compressive sensed video frame data and generate dynamical video frame data from the motion estimate and the compressive sensed video frame data. The dynamical video frame data may be output.
    Type: Application
    Filed: December 12, 2016
    Publication date: April 13, 2017
    Applicant: William Marsh Rice University
    Inventors: Jianing V. Shi, Aswin C. Sankaranarayanan, Christoph Emanuel Studer, Richard G. Baraniuk
  • Patent number: 9552658
    Abstract: A compressive sensing system for dynamic video acquisition. The system includes a video signal interface including a compressive imager configured to acquire compressive sensed video frame data from an object, a video processing unit including a processor and memory. The video processing unit is configured to receive the compressive sensed video frame data from the video signal interface. The memory comprises computer readable instructions that when executed by the processor cause the processor to generate a motion estimate from the compressive sensed video frame data and generate dynamical video frame data from the motion estimate and the compressive sensed video frame data. The dynamical video frame data may be output.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: January 24, 2017
    Assignee: William Marsh Rice University
    Inventors: Jianing V. Shi, Aswin C. Sankaranarayanan, Christoph Emanuel Studer, Richard G. Baraniuk
  • Publication number: 20140063314
    Abstract: Compressive sensing (CS)-based spatial-multiplexing cameras (SMCs) sample a scene through a series of coded projections using a spatial light modulator and a few optical sensor elements. A co-designed video CS sensing matrix and recovery algorithm provides an efficiently computable low-resolution video preview. The scene's optical flow is estimated from the preview and fed into a convex-optimization algorithm to recover the high-resolution video.
    Type: Application
    Filed: February 26, 2013
    Publication date: March 6, 2014
    Inventors: Aswin C Sankaranarayanan, Christoph E. Studer, Richard G. Baraniuk
  • Publication number: 20140029824
    Abstract: A compressive sensing system for dynamic video acquisition. The system includes a video signal interface including a compressive imager configured to acquire compressive sensed video frame data from an object, a video processing unit including a processor and memory. The video processing unit is configured to receive the compressive sensed video frame data from the video signal interface. The memory comprises computer readable instructions that when executed by the processor cause the processor to generate a motion estimate from the compressive sensed video frame data and generate dynamical video frame data from the motion estimate and the compressive sensed video frame data. The dynamical video frame data may be output.
    Type: Application
    Filed: July 26, 2013
    Publication date: January 30, 2014
    Applicant: WILLIAM MARSH RICE UNIVERSITY
    Inventors: Jianing V. Shi, Aswin C. Sankaranarayanan, Christoph Emanuel Studer, Richard G. Baraniuk
  • Publication number: 20130093957
    Abstract: A new framework for video compressed sensing models the evolution of the image frames of a video sequence as a linear dynamical system (LDS). This reduces the video recovery problem to first estimating the model parameters of the LDS from compressive measurements, from which the image frames are then reconstructed. We exploit the low-dimensional dynamic parameters (state sequence) and high-dimensional static parameters (observation matrix) of the LDS to devise a novel compressive measurement strategy that measures only the dynamic part of the scene at each instant and accumulates measurements over time to estimate the static parameters. This enables us to lower the compressive measurement rate considerably yet obtain video recovery at a high frame rate that is in fact inversely proportional to the length of the video sequence. This property makes our framework well-suited for high-speed video capture and other applications.
    Type: Application
    Filed: June 18, 2011
    Publication date: April 18, 2013
    Inventors: Richard G. Baraniuk, Aswin C. Sankaranarayanan