Patents by Inventor Arnau CALATAYUD CALATAYUD

Arnau CALATAYUD CALATAYUD 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: 11423562
    Abstract: A device and method for obtaining distance information from views is provided. The method generating epipolar images from a light field captured by a light field acquisition device; an edge detection step for detecting, in the epipolar images, edges of objects in the scene captured by the light field acquisition device; in each epipolar image, detecting valid epipolar lines formed by a set of edges; determining the slopes of the valid epipolar lines. The edge detection step may calculate a second spatial derivative for each pixel of the epipolar images and detect the zero-crossings of the second spatial derivatives, to detect object edges with subpixel precision. The method may be performed by low cost mobile devices to calculate real-time depth-maps from depth-camera recordings.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: August 23, 2022
    Assignee: PHOTONIC SENSORS & ALGORITHMS, S.L.
    Inventors: Jorge Vicente Blasco Claret, Carles Montoliu Alvaro, Arnau Calatayud Calatayud
  • Patent number: 11099304
    Abstract: A microlens array that corrects the problems caused by aberrations and non-paraxiality of microlenses is provided. The microlens array has a plurality of microlenses tilted a tilting degree (?, ?) depending on the position of the microlens in the microlens array. Simultaneously, or alternatively, the distances Pul(i) between optical centres (Pi, Pi?1) of adjacent microlenses depend on their positions in the microlens array. Both these distances Pul(i) and the tilting degrees (?, ?) are dependent normally increasing upon the distance to the center of the microlens array. The size of the microlenses may also increase with the distance to the center of the microlens array. An opaque layer may also be applied covering the edges of adjacent microlenses.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: August 24, 2021
    Assignee: PHOTONIC SENSORS & ALGORITHMS, S.L.
    Inventors: Jorge Vicente Blasco Claret, Carles Montoliu Alvaro, Arnau Calatayud Calatayud, Leticia Carrion, Adolfo Martinez Uso
  • Patent number: 10832429
    Abstract: A device and method for obtaining depth information from a light field is provided. The method generating a plurality of epipolar images from a light field captured by a light field acquisition device; an edge detection step for detecting, in the epipolar images, edges of objects in the scene captured by the light field acquisition device; for each epipolar image, detecting valid epipolar lines formed by a set of edges; and determining the slopes of the valid epipolar lines. In a preferred embodiment, the method extend the epipolar images with additional information of images captured by additional image acquisition devices and obtain extended epipolar lines. The edge detection step calculates a second spatial derivative for each pixel of the epipolar images and detects the zero-crossings of the second spatial derivatives.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: November 10, 2020
    Assignee: PHOTONIC SENSORS & ALGORITHMS, S.L.
    Inventors: Jorge Vicente Blasco Claret, Carles Montoliu Alvaro, Arnau Calatayud Calatayud, Leticia Carrion, Adolfo Martinez Uso
  • Publication number: 20200064522
    Abstract: A microlens array that corrects the problems caused by aberrations and non-paraxiality of microlenses is provided. The microlens array has a plurality of microlenses tilted a tilting degree (?,?) depending on the position of the microlens in the microlens array. Simultaneously, or alternatively, the distances Pul(i) between optical centres (Pi,Pi?1) of adjacent microlenses depend on their positions in the microlens array. Both these distances Pul(i) and the tilting degrees (?,?) are dependent normally increasing upon the distance to the center of the microlens array. The size of the microlenses may also increase with the distance to the center of the microlens array. An opaque layer may also be applied covering the edges of adjacent microlenses.
    Type: Application
    Filed: December 5, 2016
    Publication date: February 27, 2020
    Inventors: Jorge Vicente BLASCO CLARET, Carles MONTOLIU ALVARO, Arnau CALATAYUD CALATAYUD, Leticia CARRION, Adolfo MARTINEZ USO
  • Publication number: 20200051266
    Abstract: A device and method for obtaining distance information from views is provided. The method generating epipolar images from a light field captured by a light field acquisition device; an edge detection step for detecting, in the epipolar images, edges of objects in the scene captured by the light field acquisition device; in each epipolar image, detecting valid epipolar lines formed by a set of edges; determining the slopes of the valid epipolar lines. The edge detection step may calculate a second spatial derivative for each pixel of the epipolar images and detect the zero-crossings of the second spatial derivatives, to detect object edges with subpixel precision. The method may be performed by low cost mobile devices to calculate real-time depth-maps from depth-camera recordings.
    Type: Application
    Filed: October 18, 2016
    Publication date: February 13, 2020
    Inventors: Jorge Vicente BLASCO CLARET, Carles MONTOLIU ALVARO, Arnau CALATAYUD CALATAYUD
  • Publication number: 20190236796
    Abstract: A device and method for obtaining depth information from a light field is provided. The method generating a plurality of epipolar images from a light field captured by a light field acquisition device; an edge detection step for detecting, in the epipolar images, edges of objects in the scene captured by the light field acquisition device; for each epipolar image, detecting valid epipolar lines formed by a set of edges; and determining the slopes of the valid epipolar lines. In a preferred embodiment, the method extend the epipolar images with additional information of images captured by additional image acquisition devices and obtain extended epipolar lines. The edge detection step calculates a second spatial derivative for each pixel of the epipolar images and detects the zero-crossings of the second spatial derivatives.
    Type: Application
    Filed: December 20, 2016
    Publication date: August 1, 2019
    Inventors: Jorge Vicente BLASCO CLARET, Carles MONTOLIU ALVARO, Arnau CALATAYUD CALATAYUD, Leticia CARRION, Adolfo MARTINEZ USO