Patents by Inventor Pan JI

Pan JI 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: 11599974
    Abstract: A method for jointly removing rolling shutter (RS) distortions and blur artifacts in a single input RS and blurred image is presented. The method includes generating a plurality of RS blurred images from a camera, synthesizing RS blurred images from a set of GS sharp images, corresponding GS sharp depth maps, and synthesized RS camera motions by employing a structure-and-motion-aware RS distortion and blur rendering module to generate training data to train a single-view joint RS correction and deblurring convolutional neural network (CNN), and predicting an RS rectified and deblurred image from the single input RS and blurred image by employing the single-view joint RS correction and deblurring CNN.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: March 7, 2023
    Inventors: Quoc-Huy Tran, Bingbing Zhuang, Pan Ji, Manmohan Chandraker
  • Patent number: 11468585
    Abstract: A method for improving geometry-based monocular structure from motion (SfM) by exploiting depth maps predicted by convolutional neural networks (CNNs) is presented. The method includes capturing a sequence of RGB images from an unlabeled monocular video stream obtained by a monocular camera, feeding the RGB images into a depth estimation/refinement module, outputting depth maps, feeding the depth maps and the RGB images to a pose estimation/refinement module, the depths maps and the RGB images collectively defining pseudo RGB-D images, outputting camera poses and point clouds, and constructing a 3D map of a surrounding environment displayed on a visualization device.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: October 11, 2022
    Inventors: Quoc-Huy Tran, Pan Ji, Manmohan Chandraker, Lokender Tiwari
  • Patent number: 11462112
    Abstract: A method is provided in an Advanced Driver-Assistance System (ADAS). The method extracts, from an input video stream including a plurality of images using a multi-task Convolutional Neural Network (CNN), shared features across different perception tasks. The perception tasks include object detection and other perception tasks. The method concurrently solves, using the multi-task CNN, the different perception tasks in a single pass by concurrently processing corresponding ones of the shared features by respective different branches of the multi-task CNN to provide a plurality of different perception task outputs. Each respective different branch corresponds to a respective one of the different perception tasks. The method forms a parametric representation of a driving scene as at least one top-view map responsive to the plurality of different perception task outputs.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: October 4, 2022
    Inventors: Quoc-Huy Tran, Samuel Schulter, Paul Vernaza, Buyu Liu, Pan Ji, Yi-Hsuan Tsai, Manmohan Chandraker
  • Patent number: 11321853
    Abstract: A computer-implemented method for implementing a self-supervised visual odometry framework using long-term modeling includes, within a pose network of the self-supervised visual odometry framework including a plurality of pose encoders, a convolution long short-term memory (ConvLSTM) module having a first-layer ConvLSTM and a second-layer ConvLSTM, and a pose prediction layer, performing a first stage of training over a first image sequence using photometric loss, depth smoothness loss and pose cycle consistency loss, and performing a second stage of training to finetune the second-layer ConvLSTM over a second image sequence longer than the first image sequence.
    Type: Grant
    Filed: July 27, 2020
    Date of Patent: May 3, 2022
    Inventors: Pan Ji, Quoc-Huy Tran, Manmohan Chandraker, Yuliang Zou
  • Publication number: 20220111869
    Abstract: Methods and systems for determining a path include detecting objects within a perspective image that shows a scene. Depth is predicted within the perspective image. Semantic segmentation is performed on the perspective image. An attention map is generated using the detected objects and the predicted depth. A refined top-down view of the scene is generated using the predicted depth and the semantic segmentation. A parametric top-down representation of the scene is determined using a relational graph model. A path through the scene is determined using the parametric top-down representation.
    Type: Application
    Filed: October 6, 2021
    Publication date: April 14, 2022
    Inventors: Buyu Liu, Pan Ji, Bingbing Zhuang, Manmohan Chandraker, Uday Kusupati
  • Publication number: 20220063605
    Abstract: A method provided for 3D object localization predicts pairs of 2D bounding boxes. Each pair corresponds to a detected object in each of the two consecutive input monocular images. The method generates, for each detected object, a relative motion estimation specifying a relative motion between the two images. The method constructs an object cost volume by aggregating temporal features from the two images using the pairs of 2D bounding boxes and the relative motion estimation to predict a range of object depth candidates and a confidence score for each object depth candidate and an object depth from the object depth candidates. The method updates the relative motion estimation based on the object cost volume and the object depth to provide a refined object motion and a refined object depth. The method reconstructs a 3D bounding box for each detected object based on the refined object motion and refined object depth.
    Type: Application
    Filed: August 23, 2021
    Publication date: March 3, 2022
    Inventors: Pan Ji, Buyu Liu, Bingbing Zhuang, Manmohan Chandraker, Xiangyu Chen
  • Patent number: 11222409
    Abstract: A method for correcting blur effects is presented. The method includes generating a plurality of images from a camera, synthesizing blurred images from sharp image counterparts to generate training data to train a structure-and-motion-aware convolutional neural network (CNN), and predicting a camera motion and a depth map from a single blurred image by employing the structure-and-motion-aware CNN to remove blurring from the single blurred image.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: January 11, 2022
    Inventors: Quoc-Huy Tran, Bingbing Zhuang, Pan Ji, Manmohan Chandraker
  • Patent number: 11132586
    Abstract: A method for correcting rolling shutter (RS) effects is presented. The method includes generating a plurality of images from a camera, synthesizing RS images from global shutter (GS) counterparts to generate training data to train the structure-and-motion-aware convolutional neural network (CNN), and predicting an RS camera motion and an RS depth map from a single RS image by employing a structure-and-motion-aware CNN to remove RS distortions from the single RS image.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: September 28, 2021
    Inventors: Quoc-Huy Tran, Bingbing Zhuang, Pan Ji, Manmohan Chandraker
  • Publication number: 20210158490
    Abstract: A method for jointly removing rolling shutter (RS) distortions and blur artifacts in a single input RS and blurred image is presented. The method includes generating a plurality of RS blurred images from a camera, synthesizing RS blurred images from a set of GS sharp images, corresponding GS sharp depth maps, and synthesized RS camera motions by employing a structure-and-motion-aware RS distortion and blur rendering module to generate training data to train a single-view joint RS correction and deblurring convolutional neural network (CNN), and predicting an RS rectified and deblurred image from the single input RS and blurred image by employing the single-view joint RS correction and deblurring CNN.
    Type: Application
    Filed: November 5, 2020
    Publication date: May 27, 2021
    Inventors: Quoc-Huy Tran, Bingbing Zhuang, Pan Ji, Manmohan Chandraker
  • Publication number: 20210065391
    Abstract: A method for improving geometry-based monocular structure from motion (SfM) by exploiting depth maps predicted by convolutional neural networks (CNNs) is presented. The method includes capturing a sequence of RGB images from an unlabeled monocular video stream obtained by a monocular camera, feeding the RGB images into a depth estimation/refinement module, outputting depth maps, feeding the depth maps and the RGB images to a pose estimation/refinement module, the depths maps and the RGB images collectively defining pseudo RGB-D images, outputting camera poses and point clouds, and constructing a 3D map of a surrounding environment displayed on a visualization device.
    Type: Application
    Filed: August 7, 2020
    Publication date: March 4, 2021
    Inventors: Quoc-Huy Tran, Pan Ji, Manmohan Chandraker, Lokender Tiwari
  • Publication number: 20210042937
    Abstract: A computer-implemented method for implementing a self-supervised visual odometry framework using long-term modeling includes, within a pose network of the self-supervised visual odometry framework including a plurality of pose encoders, a convolution long short-term memory (ConvLSTM) module having a first-layer ConvLSTM and a second-layer ConvLSTM, and a pose prediction layer, performing a first stage of training over a first image sequence using photometric loss, depth smoothness loss and pose cycle consistency loss, and performing a second stage of training to finetune the second-layer ConvLSTM over a second image sequence longer than the first image sequence.
    Type: Application
    Filed: July 27, 2020
    Publication date: February 11, 2021
    Inventors: Pan Ji, Quoc-Huy Tran, Manmohan Chandraker, Yuliang Zou
  • Publication number: 20200372614
    Abstract: A method for correcting blur effects is presented. The method includes generating a plurality of images from a camera, synthesizing blurred images from sharp image counterparts to generate training data to train a structure-and-motion-aware convolutional neural network (CNN), and predicting a camera motion and a depth map from a single blurred image by employing the structure-and-motion-aware CNN to remove blurring from the single blurred image.
    Type: Application
    Filed: May 6, 2020
    Publication date: November 26, 2020
    Inventors: Quoc-Huy Tran, Bingbing Zhuang, Pan Ji, Manmohan Chandraker
  • Publication number: 20200286383
    Abstract: A method is provided in an Advanced Driver-Assistance System (ADAS). The method extracts, from an input video stream including a plurality of images using a multi-task Convolutional Neural Network (CNN), shared features across different perception tasks. The perception tasks include object detection and other perception tasks. The method concurrently solves, using the multi-task CNN, the different perception tasks in a single pass by concurrently processing corresponding ones of the shared features by respective different branches of the multi-task CNN to provide a plurality of different perception task outputs. Each respective different branch corresponds to a respective one of the different perception tasks. The method forms a parametric representation of a driving scene as at least one top-view map responsive to the plurality of different perception task outputs.
    Type: Application
    Filed: February 11, 2020
    Publication date: September 10, 2020
    Inventors: Quoc-Huy Tran, Samuel Schulter, Paul Vernaza, Buyu Liu, Pan Ji, Yi-Hsuan Tsai, Manmohan Chandraker
  • Publication number: 20200234467
    Abstract: Systems and methods for camera self-calibration are provided. The method includes receiving real uncalibrated images, and estimating, using a camera self-calibration network, multiple predicted camera parameters corresponding to the real uncalibrated images. Deep supervision is implemented based on a dependence order between the plurality of predicted camera parameters to place supervision signals across multiple layers according to the dependence order. The method also includes determining calibrated images using the real uncalibrated images and the predicted camera parameters.
    Type: Application
    Filed: January 7, 2020
    Publication date: July 23, 2020
    Inventors: Quoc-Huy Tran, Bingbing Zhuang, Pan Ji, Manmohan Chandraker
  • Publication number: 20200134389
    Abstract: A method for correcting rolling shutter (RS) effects is presented. The method includes generating a plurality of images from a camera, synthesizing RS images from global shutter (GS) counterparts to generate training data to train the structure-and-motion-aware convolutional neural network (CNN), and predicting an RS camera motion and an RS depth map from a single RS image by employing a structure-and-motion-aware CNN to remove RS distortions from the single RS image.
    Type: Application
    Filed: October 4, 2019
    Publication date: April 30, 2020
    Inventors: Quoc-Huy Tran, Bingbing Zhuang, Pan Ji, Manmohan Chandraker
  • Patent number: 9998611
    Abstract: A method, a device and a system for implementing quick charging are provided. The method includes: a mobile terminal and a connected adapter respectively switching signal lines which extend into a charging interface to be connected with charging lines; and the adapter charging the mobile terminal with a set high-order power mode. The present disclosure uses the existing signal lines to thicken the charging lines, thereby the charging current is increased and the purpose of implementing quick charging is realized.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: June 12, 2018
    Assignee: ZTE Corporation
    Inventors: Xiaoliang Zhang, Yunan Zhang, Pan Ji, Lei Feng, Weishan Sun
  • Publication number: 20170237864
    Abstract: A method, a device and a system for implementing quick charging are provided. The method includes: a mobile terminal and a connected adapter respectively switching signal lines which extend into a charging interface to be connected with charging lines; and the adapter charging the mobile terminal with a set high-order power mode. The present disclosure uses the existing signal lines to thicken the charging lines, thereby the charging current is increased and the purpose of implementing quick charging is realized.
    Type: Application
    Filed: July 20, 2015
    Publication date: August 17, 2017
    Applicant: ZTE Corporation
    Inventors: Xiaoliang ZHANG, Yunan ZHANG, Pan JI, Lei FENG, Weishan SUN