Patents by Inventor Supreeth Achar

Supreeth Achar 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: 20240153121
    Abstract: According to an aspect, a real-time active stereo system includes a capture system configured to capture stereo image data, the stereo image data including reference images and secondary images, and a depth sensing computing system configured to generate a depth map, the depth sensing computing system configured to compute descriptors based on the reference images and the secondary images compute a stability penalty based on pixel change information and disparity change information. evaluate a plurality of plane hypotheses for a group of pixels using the descriptors, including compute matching cost between the descriptors associated with each plane hypothesis, update the matching cost with the stability penalty, and select a plane hypothesis from the plurality of plane hypotheses for the group of pixels based on the updated matching cost.
    Type: Application
    Filed: March 3, 2021
    Publication date: May 9, 2024
    Inventors: Harris Nover, Supreeth Achar, Kira Prabhu, Vineet Bhatawadekar
  • Publication number: 20230319424
    Abstract: Techniques of estimating surface normals and reflectance from poorly-lit images includes using, in addition to an RGB image of a subject of a set of subjects, an image illuminated with near-infrared (NIR) radiation to determine albedo and surface normal maps for performing an image relighting, the image being captured with the NIR radiation from essentially the same perspective from which the RGB image was captured. In some implementations, a prediction engine takes as input a single RGB image and a single NIR image and estimates surface normals and reflectance from the subject.
    Type: Application
    Filed: November 9, 2021
    Publication date: October 5, 2023
    Inventors: Jason Lawrence, Supreeth Achar, Zhihao Xia
  • Patent number: 11747135
    Abstract: An energy optimized imaging system that includes a light source that has the ability to illuminate specific pixels in a scene, and a sensor that has the ability to capture light with specific pixels of its sensor matrix, temporally synchronized such that the sensor captures light only when the light source is illuminating pixels in the scene.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: September 5, 2023
    Assignees: Carnegie Mellon University, The Governing Council of the University of Toronto
    Inventors: Srinivasa Narasimhan, Supreeth Achar, Matthew O'Toole, Kiriakos Neoklis Kutulakos
  • Publication number: 20230088801
    Abstract: An imaging system includes a processor, a memory, a visible light camera configured to record a first image of a scene, and an infrared camera configured to record a second image of the scene. The processor configured to execute instructions stored in the memory to input the first image and the second image into a neural network. The neural network relights the first image, based on characteristics of the second image, to correspond to an image of the scene under canonical illumination conditions.
    Type: Application
    Filed: April 8, 2021
    Publication date: March 23, 2023
    Inventors: Jason Lawrence, Supreeth Achar, Zhihao Xia
  • Publication number: 20220277485
    Abstract: A method including capturing a first image of a real-world scene by a first camera sensitive to a first spectrum of light, the first camera having a first light source, capturing a second image of the real-world scene by a second camera sensitive to a second spectrum of light, the second camera having a second light source, identifying at least one feature in the first image, identifying, using a machine learning (ML) model, at least one feature in the second image that matches the at least one feature identified in the first image, mapping pixels in the first image and the second image to rays in a three-dimensional (3D) space based on the matched at least one feature, and calibrating the first camera and the second camera based on the mapping.
    Type: Application
    Filed: January 19, 2021
    Publication date: September 1, 2022
    Inventors: Supreeth Achar, Daniel Goldman
  • Patent number: 11425357
    Abstract: Energy-efficient epipolar imaging is applied to the ToF domain to significantly expand the versatility of ToF sensors. The described system exhibits 15+ m range outdoors in bright sunlight; robustness to global transport effects such as specular and diffuse inter-reflections; interference-free 3D imaging in the presence of many ToF sensors, even when they are all operating at the same optical wavelength and modulation frequency; and blur- and distortion-free 3D video in the presence of severe camera shake. The described embodiments are broadly applicable in consumer and robotics domains.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: August 23, 2022
    Assignees: CARNEGIE MELLON UNIVERSITY, THE GOVERNING COUNCIL OF THE UNIVERSITY OF TORONTO
    Inventors: Srinivasa Narasimhan, Supreeth Achar, Kiriakos Kutulakos, Joseph Bartels, William Whittaker
  • Publication number: 20220034651
    Abstract: An energy optimized imaging system that includes a light source that has the ability to illuminate specific pixels in a scene, and a sensor that has the ability to capture light with specific pixels of its sensor matrix, temporally synchronized such that the sensor captures light only when the light source is illuminating pixels in the scene.
    Type: Application
    Filed: October 6, 2021
    Publication date: February 3, 2022
    Inventors: Srinivasa Narasimhan, Supreeth Achar, Matthew O'Toole, Kiriakos Neoklis Kutulakos
  • Patent number: 11190746
    Abstract: According to an aspect, a real-time active stereo system includes a capture system configured to capture stereo image data, where the image data includes a plurality of pairs of a reference image and a secondary image, and each pair of the plurality of pairs relates a different temporal window. The real-time active stereo system includes a depth sensing computing system including at least one processor and a non-transitory computer-readable medium having executable instructions that when executed by the at least one processor are configured to execute a local stereo reconstruction algorithm configured to compute spacetime descriptors from the plurality of pairs of the stereo image data and generate depth maps based on the spacetime descriptors.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: November 30, 2021
    Assignee: GOOGLE LLC
    Inventors: Daniel Goldman, Harris Nover, Supreeth Achar
  • Publication number: 20200204777
    Abstract: According to an aspect, a real-time active stereo system includes a capture system configured to capture stereo image data, where the image data includes a plurality of pairs of a reference image and a secondary image, and each pair of the plurality of pairs relates a different temporal window. The real-time active stereo system includes a depth sensing computing system including at least one processor and a non-transitory computer-readable medium having executable instructions that when executed by the at least one processor are configured to execute a local stereo reconstruction algorithm configured to compute spacetime descriptors from the plurality of pairs of the stereo image data and generate depth maps based on the spacetime descriptors.
    Type: Application
    Filed: December 11, 2019
    Publication date: June 25, 2020
    Inventors: Daniel Goldman, Harris Nover, Supreeth Achar
  • Publication number: 20200092533
    Abstract: Energy-efficient epipolar imaging is applied to the ToF domain to significantly expand the versatility of ToF sensors. The described system exhibits 15+ m range outdoors in bright sunlight; robustness to global transport effects such as specular and diffuse inter-reflections; interference-free 3D imaging in the presence of many ToF sensors, even when they are all operating at the same optical wavelength and modulation frequency; and blur- and distortion-free 3D video in the presence of severe camera shake. The described embodiments are broadly applicable in consumer and robotics domains.
    Type: Application
    Filed: January 19, 2018
    Publication date: March 19, 2020
    Inventors: Srinivasa Narasimhan, Supreeth Achar, Kiriakos Kutulakos, Joe Bartels, William Whittaker
  • Publication number: 20200018592
    Abstract: An energy optimized imaging system that includes a light source that has the ability to illuminate specific pixels in a scene, and a sensor that has the ability to capture light with specific pixels of its sensor matrix, temporally synchronized such that the sensor captures light only when the light source is illuminating pixels in the scene.
    Type: Application
    Filed: July 19, 2019
    Publication date: January 16, 2020
    Inventors: Srinivasa Narasimhan, Supreeth Achar, Matthew O'Toole, Kiriakos Neoklis Kutulakos
  • Patent number: 10359277
    Abstract: An energy optimized imaging system that includes a light source that has the ability to illuminate specific pixels in a scene, and a sensor that has the ability to capture light with specific pixels of its sensor matrix, temporally synchronized such that the sensor captures light only when the light source is illuminating pixels in the scene.
    Type: Grant
    Filed: February 15, 2016
    Date of Patent: July 23, 2019
    Assignee: CARNEGIE MELLON UNIVERSITY
    Inventors: Srinivasa Narasimhan, Supreeth Achar, Matthew O'Toole, Kiriakos Neoklis Kutulakos
  • Publication number: 20180094919
    Abstract: An energy optimized imaging system that includes a light source that has the ability to illuminate specific pixels in a scene, and a sensor that has the ability to capture light with specific pixels of its sensor matrix, temporally synchronized such that the sensor captures light only when the light source is illuminating pixels in the scene.
    Type: Application
    Filed: February 15, 2016
    Publication date: April 5, 2018
    Applicants: CARNEGIE MELLON UNIVERSITY, THE GOVERNING COUNCIL OF THE UNIVERSITY OF TORONTO
    Inventors: Srinivasa Narasimham, Supreeth Achar, Matthew O'Toole, Kyros Kutulakos
  • Patent number: 9749782
    Abstract: Methods, systems, and devices are described for commissioning light fixtures. One method may include receiving, at a mobile device, an encoded light signal from a light fixture in a plurality of light fixtures. The encoded light signal may be decoded to obtain an identifier associated with the light fixture, and a correspondence between the identifier and a plurality of locations of the plurality of light fixtures may be determined.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: August 29, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Aleksandar Jovicic, Supreeth Achar
  • Publication number: 20160037293
    Abstract: Methods, systems, and devices are described for commissioning light fixtures. One method may include receiving, at a mobile device, an encoded light signal from a light fixture in a plurality of light fixtures. The encoded light signal may be decoded to obtain an identifier associated with the light fixture, and a correspondence between the identifier and a plurality of locations of the plurality of light fixtures may be determined.
    Type: Application
    Filed: July 30, 2015
    Publication date: February 4, 2016
    Inventors: Aleksandar Jovicic, Supreeth Achar