Patents by Inventor Nikolaos Stefas

Nikolaos Stefas 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).

  • Robotic surveying of fruit plants
    Patent number: 9922261
    Abstract: A method of machine vision includes identifying contours of fruits in a first image and a second image and performing two-way matching of contours to identify pairs of matched contours, each pair comprising a respective first contour in the first image that matches a respective second contour in the second image. For each pair of matched contours, a respective affine transformation that transforms points in the respective second contour to points in the respective first contour is identified. The second image is mapped to the first image using the affine transformations to form a composite image and the number of fruits in the composite image is counted.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: March 20, 2018
    Assignee: Regents of the University of Minnesota
    Inventors: Volkan Isler, Pratap Rajkumar Tokekar, Nikolaos Stefas, Pravakar Roy
  • ROBOTIC SURVEYING OF FRUIT PLANTS
    Publication number: 20160307329
    Abstract: A method of machine vision includes identifying contours of fruits in a first image and a second image and performing two-way matching of contours to identify pairs of matched contours, each pair comprising a respective first contour in the first image that matches a respective second contour in the second image. For each pair of matched contours, a respective affine transformation that transforms points in the respective second contour to points in the respective first contour is identified. The second image is mapped to the first image using the affine transformations to form a composite image and the number of fruits in the composite image is counted.
    Type: Application
    Filed: April 18, 2016
    Publication date: October 20, 2016
    Inventors: Volkan Isler, Pratap Rajkumar Tokekar, Nikolaos Stefas, Pravakar Roy