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).
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Patent number: 12073578Abstract: 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: GrantFiled: April 26, 2023Date of Patent: August 27, 2024Assignees: William Marsh Rice University, Carnegie Mellon UniversityInventors: Yicheng Wu, Vivek Boominathan, Huaijin Chen, Aswin C. Sankaranarayanan, Ashok Veeraraghavan
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Publication number: 20230410341Abstract: 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: ApplicationFiled: April 26, 2023Publication date: December 21, 2023Applicants: William Marsh Rice University, Carnegie Mellon UniversityInventors: Yicheng Wu, Vivek Boominathan, Huaijin Chen, Aswin C. Sankaranarayanan, Ashok Veeraraghavan
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Patent number: 11676294Abstract: 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: GrantFiled: May 1, 2020Date of Patent: June 13, 2023Assignees: William Marsh Rice University, Carnegie Mellon UniversityInventors: Yicheng Wu, Vivek Boominathan, Huaijin Chen, Aswin C. Sankaranarayanan, Ashok Veeraraghavan
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Patent number: 11493634Abstract: 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: GrantFiled: March 11, 2019Date of Patent: November 8, 2022Assignee: CARNEGIE MELLON UNIVERSITYInventors: Srinivasa Narasimhan, Jian Wang, Aswin C. Sankaranarayanan, Joseph Bartels, William Whittaker
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Publication number: 20210033733Abstract: 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: ApplicationFiled: March 11, 2019Publication date: February 4, 2021Inventors: Srinivasa Narasimhan, Jian Wang, Aswin C. Sankaranarayanan, Joseph Bartels, William Whittaker
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Publication number: 20200349729Abstract: 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: ApplicationFiled: May 1, 2020Publication date: November 5, 2020Applicants: William Marsh Rice University, Carnegie Mellon UniversityInventors: Yicheng Wu, Vivek Boominathan, Hauijin Chen, Aswin C. Sankaranarayanan, Ashok Veeraraghavan
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Patent number: 10176571Abstract: 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: GrantFiled: December 12, 2016Date of Patent: January 8, 2019Assignee: William Marsh Rice UniversityInventors: Jianing V. Shi, Aswin C. Sankaranarayanan, Christoph Emanuel Studer, Richard G. Baraniuk
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Patent number: 9654752Abstract: 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: GrantFiled: June 18, 2011Date of Patent: May 16, 2017Assignee: William Marsh Rice UniversityInventors: Richard G. Baraniuk, Aswin C. Sankaranarayanan
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Publication number: 20170103529Abstract: 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: ApplicationFiled: December 12, 2016Publication date: April 13, 2017Applicant: William Marsh Rice UniversityInventors: Jianing V. Shi, Aswin C. Sankaranarayanan, Christoph Emanuel Studer, Richard G. Baraniuk
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Patent number: 9552658Abstract: 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: GrantFiled: July 26, 2013Date of Patent: January 24, 2017Assignee: William Marsh Rice UniversityInventors: Jianing V. Shi, Aswin C. Sankaranarayanan, Christoph Emanuel Studer, Richard G. Baraniuk
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Publication number: 20140063314Abstract: 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: ApplicationFiled: February 26, 2013Publication date: March 6, 2014Inventors: Aswin C Sankaranarayanan, Christoph E. Studer, Richard G. Baraniuk
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Publication number: 20140029824Abstract: 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: ApplicationFiled: July 26, 2013Publication date: January 30, 2014Applicant: WILLIAM MARSH RICE UNIVERSITYInventors: Jianing V. Shi, Aswin C. Sankaranarayanan, Christoph Emanuel Studer, Richard G. Baraniuk
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Publication number: 20130093957Abstract: 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: ApplicationFiled: June 18, 2011Publication date: April 18, 2013Inventors: Richard G. Baraniuk, Aswin C. Sankaranarayanan