Patents by Inventor Xiwu Cao

Xiwu Cao 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: 20230410478
    Abstract: A processing apparatus is provided that is configured to perform operations including obtaining a plurality of images having been evaluated by different sources such that each source has classified each of the plurality of image as being a member of one of a predefined class, generating a distribution array identifying a number of times each image of the plurality of images has been classified into each of the predefined classes, generating, for each predefined class, a loss function based on the ratio of a number of images in other classes of the predefined classes to a number of images to this predefined classes, providing the generated loss function for each predefined class as evaluation parameters to a model, and using the generated loss function to determine that the model classifies raw image data as being a member of one of the predefined classes according to a predetermined accuracy threshold.
    Type: Application
    Filed: November 8, 2021
    Publication date: December 21, 2023
    Inventor: Xiwu Cao
  • Publication number: 20230401813
    Abstract: An image processing apparatus and method are provided which obtains an image captured by an image capture device and stored in a memory, extracts one or more regions of interest in the obtained image, normalizes the extracted one or more regions of interest to be at a same scale or some predefined scales, extract the frequency information of regions of interest, determines a sharpness of the obtained image by aggregating the frequency information in each of the one or more extracted regions of interest, and labels the obtained image with the determined sharpness score.
    Type: Application
    Filed: November 8, 2021
    Publication date: December 14, 2023
    Inventor: Xiwu Cao
  • Publication number: 20220366181
    Abstract: Devices, systems, and methods obtain one or more training images; obtain a test image; select one or more associated pixels in the training images for a target pixel in the training images; calculate respective value relationships between a value of the target pixel and respective values of the associated pixels in the training images; select one or more associated pixels in the test image for a target pixel in the test image; and detect an anomaly in the target pixel in the test image based on the respective value relationships between the value of the target pixel and the respective values of the associated pixels in the training images and on respective value relationships between a value of the target pixel and respective values of the associated pixels in the test image.
    Type: Application
    Filed: July 22, 2022
    Publication date: November 17, 2022
    Inventors: Xiwu Cao, Bradley Scott Denney
  • Patent number: 11429806
    Abstract: Devices, systems, and methods obtain one or more training images; obtain a test image; select one or more associated pixels in the training images for a target pixel in the training images; calculate respective value relationships between a value of the target pixel and respective values of the associated pixels in the training images; select one or more associated pixels in the test image for a target pixel in the test image; and detect an anomaly in the target pixel in the test image based on the respective value relationships between the value of the target pixel and the respective values of the associated pixels in the training images and on respective value relationships between a value of the target pixel and respective values of the associated pixels in the test image.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: August 30, 2022
    Assignee: Canon Virginia, Inc.
    Inventors: Xiwu Cao, Bradley Scott Denney
  • Patent number: 11392846
    Abstract: Applying a local-adapted minority oversampling strategy technique to an imbalanced dataset including positive samples belonging to a minority class and negative samples belonging to a majority class, the minority class being less prevalent than the majority class, wherein each sample from the dataset includes a plurality of features. The local-adapted minority oversampling strategy includes determining a local imbalance for each positive sample from the minority class corresponding to a number of other positive samples and/or negative samples within a neighborhood of each positive sample. The local-adapted minority oversampling strategy also includes calculating a local-adapted oversampling ratio based on the local imbalance estimated for each positive sample and replicating each positive sample using the local-adapted oversampling ratio to generate a new dataset.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: July 19, 2022
    Assignee: Canon U.S.A., Inc.
    Inventors: Xiwu Cao, Samuel Schrader
  • Publication number: 20220207746
    Abstract: Some embodiments of devices, systems, and methods obtain at least one first image, wherein the at least one first image is defined in an image space; select at least one feature in the at least one first image; define a topology based on the at least one feature; generate a topology mapping between the topology and the image-space topology; obtain a plurality of anomaly scores, wherein each anomaly score of the plurality of anomaly scores was generated based on a respective detection area in a second image; map the plurality of anomaly scores to the topology based on the topology mapping; and normalize each anomaly score in the plurality of anomaly scores based on the respective neighboring anomaly scores in the topology, thereby generating normalized anomaly scores.
    Type: Application
    Filed: March 17, 2022
    Publication date: June 30, 2022
    Inventors: Xiwu Cao, Bradley Scott Denney
  • Patent number: 11321846
    Abstract: Some embodiments of devices, systems, and methods obtain at least one first image, wherein the at least one first image is defined in an image space; select at least one feature in the at least one first image; define a topology based on the at least one feature; generate a topology mapping between the topology and the image-space topology; obtain a plurality of anomaly scores, wherein each anomaly score of the plurality of anomaly scores was generated based on a respective detection area in a second image; map the plurality of anomaly scores to the topology based on the topology mapping; and normalize each anomaly score in the plurality of anomaly scores based on the respective neighboring anomaly scores in the topology, thereby generating normalized anomaly scores.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: May 3, 2022
    Assignee: Canon Virginia, Inc.
    Inventors: Xiwu Cao, Bradley Scott Denney
  • Patent number: 11189023
    Abstract: Devices, systems, and methods obtain a reference image; obtain a test image; globally align the test image to the reference image; select subfields in the test image; align the subfields in the test image with respective areas in the reference image; warp the test image based on the aligning of the subfields; select anchor points in the reference image; select anchor-edge points in the reference image; realign the subfields in the warped test image with respective areas in the reference image based on the anchor points in the reference image and on the anchor-edge points in the reference image; and warp the warped test image based on the realigning of the subfields.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: November 30, 2021
    Assignee: Canon Virginia, Inc.
    Inventors: Xiwu Cao, Nikhil Krishnan, Bradley Scott Denney, Hung Khei Huang
  • Patent number: 11132791
    Abstract: Devices, systems, and methods obtain a reference image; obtain a test image; globally align the test image to the reference image; select subfields in the test image; align the subfields in the test image with respective areas in the reference image; warp the test image based on the aligning of the subfields; select anchor points in the reference image; select anchor-edge points in the reference image; realign the subfields in the warped test image with respective areas in the reference image based on the anchor points in the reference image and on the anchor-edge points in the reference image; and warp the warped test image based on the realigning of the subfields.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: September 28, 2021
    Assignee: Canon Virginia, Inc.
    Inventors: Xiwu Cao, Nikhil Krishnan, Bradley Scott Denney, Hung Khei Huang
  • Patent number: 10997712
    Abstract: Devices, systems, and methods obtain a reference image; obtain a test image; globally align the test image to the reference image; select subfields in the test image; align the subfields in the test image with respective areas in the reference image; warp the test image based on the aligning of the subfields; select anchor points in the reference image; select anchor-edge points in the reference image; realign the subfields in the warped test image with respective areas in the reference image based on the anchor points in the reference image and on the anchor-edge points in the reference image; and warp the warped test image based on the realigning of the subfields.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: May 4, 2021
    Assignee: Canon Virginia, Inc.
    Inventors: Xiwu Cao, Nikhil Krishnan, Bradley Scott Denney, Hung Khei Huang
  • Publication number: 20210073964
    Abstract: Devices, systems, and methods obtain a reference image; obtain a test image; globally align the test image to the reference image; select subfields in the test image; align the subfields in the test image with respective areas in the reference image; warp the test image based on the aligning of the subfields; select anchor points in the reference image; select anchor-edge points in the reference image; realign the subfields in the warped test image with respective areas in the reference image based on the anchor points in the reference image and on the anchor-edge points in the reference image; and warp the warped test image based on the realigning of the subfields.
    Type: Application
    Filed: November 19, 2020
    Publication date: March 11, 2021
    Inventors: Xiwu Cao, Nikhil Krishnan, Bradley Scott Denney, Hung Khei Huang
  • Publication number: 20210073965
    Abstract: Devices, systems, and methods obtain a reference image; obtain a test image; globally align the test image to the reference image; select subfields in the test image; align the subfields in the test image with respective areas in the reference image; warp the test image based on the aligning of the subfields; select anchor points in the reference image; select anchor-edge points in the reference image; realign the subfields in the warped test image with respective areas in the reference image based on the anchor points in the reference image and on the anchor-edge points in the reference image; and warp the warped test image based on the realigning of the subfields.
    Type: Application
    Filed: November 19, 2020
    Publication date: March 11, 2021
    Inventors: Xiwu Cao, Nikhil Krishnan, Bradley Scott Denney, Hung Khei Huang
  • Publication number: 20200372383
    Abstract: Applying a local-adapted minority oversampling strategy technique to an imbalanced dataset including positive samples belonging to a minority class and negative samples belonging to a majority class, the minority class being less prevalent than the majority class, wherein each sample from the dataset includes a plurality of features. The local-adapted minority oversampling strategy includes determining a local imbalance for each positive sample from the minority class corresponding to a number of other positive samples and/or negative samples within a neighborhood of each positive sample. The local-adapted minority oversampling strategy also includes calculating a local-adapted oversampling ratio based on the local imbalance estimated for each positive sample and replicating each positive sample using the local-adapted oversampling ratio to generate a new dataset.
    Type: Application
    Filed: May 24, 2019
    Publication date: November 26, 2020
    Inventors: Xiwu Cao, Samuel Schrader
  • Publication number: 20200311944
    Abstract: Some embodiments of devices, systems, and methods obtain at least one first image, wherein the at least one first image is defined in an image space; select at least one feature in the at least one first image; define a topology based on the at least one feature; generate a topology mapping between the topology and the image-space topology; obtain a plurality of anomaly scores, wherein each anomaly score of the plurality of anomaly scores was generated based on a respective detection area in a second image; map the plurality of anomaly scores to the topology based on the topology mapping; and normalize each anomaly score in the plurality of anomaly scores based on the respective neighboring anomaly scores in the topology, thereby generating normalized anomaly scores.
    Type: Application
    Filed: March 24, 2020
    Publication date: October 1, 2020
    Inventors: Xiwu Cao, Bradley Scott Denney
  • Publication number: 20200151496
    Abstract: Devices, systems, and methods obtain one or more training images; obtain a test image; select one or more associated pixels in the training images for a target pixel in the training images; calculate respective value relationships between a value of the target pixel and respective values of the associated pixels in the training images; select one or more associated pixels in the test image for a target pixel in the test image; and detect an anomaly in the target pixel in the test image based on the respective value relationships between the value of the target pixel and the respective values of the associated pixels in the training images and on respective value relationships between a value of the target pixel and respective values of the associated pixels in the test image.
    Type: Application
    Filed: November 8, 2019
    Publication date: May 14, 2020
    Inventors: Xiwu Cao, Bradley Scott Denney
  • Publication number: 20190220965
    Abstract: Devices, systems, and methods obtain a reference image; obtain a test image; globally align the test image to the reference image; select subfields in the test image; align the subfields in the test image with respective areas in the reference image; warp the test image based on the aligning of the subfields; select anchor points in the reference image; select anchor-edge points in the reference image; realign the subfields in the warped test image with respective areas in the reference image based on the anchor points in the reference image and on the anchor-edge points in the reference image; and warp the warped test image based on the realigning of the subfields.
    Type: Application
    Filed: January 15, 2019
    Publication date: July 18, 2019
    Inventors: Xiwu Cao, Nikhil Krishnan, Bradley Scott Denney, Hung Khei Huang