Patents by Inventor Hemang Chawla

Hemang Chawla 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: 11948272
    Abstract: A computer-implemented method to improve scale consistency and/or scale awareness in a model of self-supervised depth and ego-motion prediction neural networks processing a video stream of monocular images, wherein complementary GPS coordinates synchronized with the images are used to calculate a GPS to scale loss to enforce the scale-consistency and/or -awareness on the monocular self-supervised ego-motion and depth estimation. A relative weight assigned to the GPS to scale loss exponentially increases as training progresses. The depth and ego-motion prediction neural networks are trained using an appearance-based photometric loss between real and synthesized target images, as well as a smoothness loss on the depth predictions.
    Type: Grant
    Filed: August 13, 2021
    Date of Patent: April 2, 2024
    Assignee: NAVINFO EUROPE B.V.
    Inventors: Hemang Chawla, Arnav Varma, Elahe Arani, Bahram Zonooz
  • Patent number: 11847802
    Abstract: Systems arranged to implement methods for positioning a semantic landmark in an image from the real world during a continuous motion of a monocular camera providing said image, using in combination image information from the camera and GPS information, wherein the camera parameters are unknown a priori and are estimated in a self-calibration step, wherein in a subsequent step positioning of the landmarks is completed using one of camera ego motion and depth estimation.
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: December 19, 2023
    Assignee: NavInfo Europe B.V.
    Inventors: Hemang Chawla, Matti Jukola, Terence Brouns, Elahe Arani, Bahram Zonooz
  • Publication number: 20230245463
    Abstract: A computer-implemented method of self-supervised learning in neural network for scene understanding in autonomously moving vehicles wherein the method to estimate the ego-motion and the intrinsics (focal lengths and principal point) robustly in a unified manner from a pair of input overlapping images captured from a monocular camera, within a self-supervised monocular depth and ego-motion estimation problem by including multi-head self-attention modules within a transformer architecture.
    Type: Application
    Filed: January 19, 2022
    Publication date: August 3, 2023
    Inventors: Arnav Varma, Hemang Chawla, Bahram Zonooz, Elahe Arani
  • Publication number: 20220156882
    Abstract: A computer-implemented method to improve scale consistency and/or scale awareness in a model of self-supervised depth and ego-motion prediction neural networks processing a video stream of monocular images, wherein complementary GPS coordinates synchronized with the images are used to calculate a GPS to scale loss to enforce the scale-consistency and/or -awareness on the monocular self-supervised ego-motion and depth estimation. A relative weight assigned to the GPS to scale loss exponentially increases as training progresses. The depth and ego-motion prediction neural networks are trained using an appearance-based photometric loss between real and synthesized target images, as well as a smoothness loss on the depth predictions.
    Type: Application
    Filed: August 13, 2021
    Publication date: May 19, 2022
    Inventors: Hemang Chawla, Arnav Varma, Elahe Arani, Bahram Zonooz
  • Publication number: 20210342589
    Abstract: Systems arranged to implement methods for positioning a semantic landmark in an image from the real world during a continuous motion of a monocular camera providing said image, using in combination image information from the camera and GPS information, wherein the camera parameters are unknown a priori and are estimated in a self-calibration step, wherein in a subsequent step positioning of the landmarks is completed using one of camera ego motion and depth estimation.
    Type: Application
    Filed: April 19, 2021
    Publication date: November 4, 2021
    Inventors: Hemang Chawla, Matti Jukola, Terence Brouns, Elahe Arani, Bahram Zonooz