Patents by Inventor Pietro Salvagnini

Pietro Salvagnini 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: 11019330
    Abstract: A method for a computing device to recalibrate a multiple camera system includes collecting calibration data from one or more pictures captured by the multiple camera system of the computing device. The multiple camera system includes two or more cameras that are each physically separated by a distance from one another. The method further includes detecting decalibration of the camera system. The method further includes, when the camera system is decalibrated, generating recalibration parameters based on the calibration data. The method further includes determining whether the recalibration parameters are valid parameters and, when they are, updating the multiple camera system based on the recalibration parameters.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: May 25, 2021
    Assignee: AQUIFI, INC.
    Inventors: David Demirdjian, Britta Silke Hummel, Ahmed Tashrif Kamal, Michele Stoppa, Giuliano Pasqualotto, Pietro Salvagnini
  • Patent number: 10453185
    Abstract: A method for capturing a depth map includes: controlling a plurality of cameras to capture, concurrently, a plurality of first images during a first exposure interval, each of the cameras concurrently capturing a corresponding one of the first images, the cameras having overlapping fields of view; controlling a projection source to emit light at a first illumination level during the first exposure interval; controlling the cameras to capture, concurrently, a plurality of second images during a second exposure interval, each of the cameras concurrently capturing a corresponding one of the second images; controlling the projection source to emit light at a second illumination level during the second exposure interval, the second illumination level being different from the first illumination level; combining the first images with the second images to generate a depth map; and outputting the depth map.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: October 22, 2019
    Assignee: AQUIFI, INC.
    Inventors: Carlo Dal Mutto, Abbas Rafii, Pietro Salvagnini, Aryan Hazeghi, Michele Stoppa, Francesco Peruch, Giulio Marin
  • Publication number: 20180322623
    Abstract: A method for detecting defects in objects includes: controlling, by a processor, one or more depth cameras to capture a plurality of depth images of a target object; computing, by the processor, a three-dimensional (3-D) model of the target object using the depth images; rendering, by the processor, one or more views of the 3-D model; computing, by the processor, a descriptor by supplying the one or more views of the 3-D model to a convolutional stage of a convolutional neural network; supplying, by the processor, the descriptor to a defect detector to compute one or more defect classifications of the target object; and outputting the one or more defect classifications of the target object.
    Type: Application
    Filed: May 8, 2018
    Publication date: November 8, 2018
    Inventors: Alvise Memo, David Demirdjian, Giulio Marin, Kinh Tieu, Francesco Peruch, Pietro Salvagnini, Giridhar Murali, Carlo Dal Mutto, Guido Cesare
  • Publication number: 20180211373
    Abstract: A method for detecting a defect in an object includes: capturing, by one or more depth cameras, a plurality of partial point clouds of the object from a plurality of different poses with respect to the object; merging, by a processor, the partial point clouds to generate a merged point cloud; computing, by the processor, a three-dimensional (3D) multi-view model of the object; detecting, by the processor, one or more defects of the object in the 3D multi-view model; and outputting, by the processor, an indication of the one or more defects of the object.
    Type: Application
    Filed: January 9, 2018
    Publication date: July 26, 2018
    Inventors: Michele Stoppa, Francesco Peruch, Giuliano Pasqualotto, Aryan Hazeghi, Pietro Salvagnini, Carlo Dal Mutto, Jason Trachewsky, Kinh Tieu
  • Patent number: 9807371
    Abstract: A method for detecting decalibration of a depth camera system including a first, second, and third cameras having overlapping fields of view in a direction includes: detecting a feature in a first image captured by the first camera; detecting the feature in a second image captured by the second camera; detecting the feature in a third image captured by the third camera, the third camera being non-collinear with the first and second cameras; identifying a first conjugate epipolar line in the second image in accordance with a detected location of the feature in the first image and calibration parameters; identifying a second conjugate epipolar line in the second image in accordance with a detected location of the feature in the third image and the calibration parameters; and calculating a difference between a detected location of the feature in the second image and the first and second conjugate epipolar lines.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: October 31, 2017
    Assignee: Aquifi, Inc.
    Inventors: Pietro Salvagnini, Michele Stoppa, Abbas Rafii
  • Publication number: 20170223340
    Abstract: A method for detecting decalibration of a depth camera system including a first, second, and third cameras having overlapping fields of view in a direction includes: detecting a feature in a first image captured by the first camera; detecting the feature in a second image captured by the second camera; detecting the feature in a third image captured by the third camera, the third camera being non-collinear with the first and second cameras; identifying a first conjugate epipolar line in the second image in accordance with a detected location of the feature in the first image and calibration parameters; identifying a second conjugate epipolar line in the second image in accordance with a detected location of the feature in the third image and the calibration parameters; and calculating a difference between a detected location of the feature in the second image and the first and second conjugate epipolar lines.
    Type: Application
    Filed: April 12, 2017
    Publication date: August 3, 2017
    Inventors: Pietro Salvagnini, Michele Stoppa, Abbas Rafii
  • Publication number: 20170180706
    Abstract: A method for detecting decalibration of a depth camera system including a first, second, and third cameras having overlapping fields of view in a direction includes: detecting a feature in a first image captured by the first camera; detecting the feature in a second image captured by the second camera; detecting the feature in a third image captured by the third camera, the third camera being non-collinear with the first and second cameras; identifying a first conjugate epipolar line in the second image in accordance with a detected location of the feature in the first image and calibration parameters; identifying a second conjugate epipolar line in the second image in accordance with a detected location of the feature in the third image and the calibration parameters; and calculating a difference between a detected location of the feature in the second image and the first and second conjugate epipolar lines.
    Type: Application
    Filed: May 5, 2016
    Publication date: June 22, 2017
    Inventors: Pietro Salvagnini, Michele Stoppa, Abbas Rafii
  • Patent number: 9674504
    Abstract: A method for detecting decalibration of a depth camera system including a first, second, and third cameras having overlapping fields of view in a direction includes: detecting a feature in a first image captured by the first camera; detecting the feature in a second image captured by the second camera; detecting the feature in a third image captured by the third camera, the third camera being non-collinear with the first and second cameras; identifying a first conjugate epipolar line in the second image in accordance with a detected location of the feature in the first image and calibration parameters; identifying a second conjugate epipolar line in the second image in accordance with a detected location of the feature in the third image and the calibration parameters; and calculating a difference between a detected location of the feature in the second image and the first and second conjugate epipolar lines.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: June 6, 2017
    Assignee: Aquifi, Inc.
    Inventors: Pietro Salvagnini, Michele Stoppa, Abbas Rafii
  • Publication number: 20170142312
    Abstract: A method for capturing a depth map includes: controlling a plurality of cameras to capture, concurrently, a plurality of first images during a first exposure interval, each of the cameras concurrently capturing a corresponding one of the first images, the cameras having overlapping fields of view; controlling a projection source to emit light at a first illumination level during the first exposure interval; controlling the cameras to capture, concurrently, a plurality of second images during a second exposure interval, each of the cameras concurrently capturing a corresponding one of the second images; controlling the projection source to emit light at a second illumination level during the second exposure interval, the second illumination level being different from the first illumination level; combining the first images with the second images to generate a depth map; and outputting the depth map.
    Type: Application
    Filed: November 2, 2016
    Publication date: May 18, 2017
    Inventors: Carlo Dal Mutto, Abbas Rafii, Pietro Salvagnini, Aryan Hazeghi, Michele Stoppa, Francesco Peruch, Giulio Marin
  • Publication number: 20160212418
    Abstract: A method for a computing device to recalibrate a multiple camera system includes collecting calibration data from one or more pictures captured by the multiple camera system of the computing device. The multiple camera system includes two or more cameras that are each physically separated by a distance from one another. The method further includes detecting decalibration of the camera system. The method further includes, when the camera system is decalibrated, generating recalibration parameters based on the calibration data. The method further includes determining whether the recalibration parameters are valid parameters and, when they are, updating the multiple camera system based on the recalibration parameters.
    Type: Application
    Filed: April 2, 2015
    Publication date: July 21, 2016
    Applicant: AQUIFI, INC.
    Inventors: David Demirdjian, Britta Silke Hummel, Ahmed Tashrif Kamal, Michele Stoppa, Giuliano Pasqualotto, Pietro Salvagnini