Patents by Inventor Karl Astrom

Karl Astrom 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: 10210394
    Abstract: An apparatus being adapted to determine an occupancy in a designated area, said apparatus comprising a memory and a controller, said controller being configured to determine at least one passage time; wherein said passage time is a time for a detected passage into and/or out of said area based on said image stream, determine an average occupancy time, determine if a passage into said designated area is estimated to occupy the designated area by comparing the time for the passage with the average occupancy time, and determine an estimation of the present occupancy in the designated area to equal the number of such passages.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: February 19, 2019
    Assignee: COGNIMATICS AB
    Inventors: Karl Astrom, Marcus Johansson, Jonna Hellstrom, Hakan Ardo, Rikard Berthilsson
  • Publication number: 20170161562
    Abstract: An apparatus being adapted to determine an occupancy in a designated area, said apparatus comprising a memory and a controller, said controller being configured to determine at least one passage time; wherein said passage time is a time for a detected passage into and/or out of said area based on said image stream, determine an average occupancy time, determine if a passage into said designated area is estimated to occupy the designated area by comparing the time for the passage with the average occupancy time, and determine an estimation of the present occupancy in the designated area to equal the number of such passages.
    Type: Application
    Filed: January 21, 2015
    Publication date: June 8, 2017
    Applicant: COGNIMATICS AB
    Inventors: Karl ASTROM, Marcus JOHANSSON, Jonna HELLSTROM, Hakan ARDO, Rikard BERTHILSSON
  • Publication number: 20060215880
    Abstract: A method for tracking objects in a scene being viewed by a sequence of digital images comprises: separating a region of interest in the digital images into a plurality of spatially smaller, overlapping modules, and defining a hidden Markov model for each module. The method further comprises observing detections of positions of possible objects at different times, considering a set of states at a point of time (t1) such that the set of states comprises a state having a global optimum probability, and backtracking through the sequence of digital images for each hidden Markov model to shrink the set of states that are possible for earlier parts of the sequence of digital images, such that a single optimal state is found for an earlier point of time (t2<t1), whereby tracks of detected objects through the scene are determined up to the earlier point of time (t2).
    Type: Application
    Filed: March 20, 2006
    Publication date: September 28, 2006
    Inventors: Rikard Berthilsson, Karl Astrom, Hakan Ardo
  • Publication number: 20030030638
    Abstract: A method is presented for extracting information from a target area within a two-dimensional graphical object having a plurality of predetermined features with known characteristics in a first plane. An image is read where the object is located in a second plane, which is a priori unknown. A plurality of candidates to the features in the second plane are identified in the image. A transformation matrix for projective mapping between the second and first planes is calculated from the identified feature candidates. The target area of the object is transformed from the second plane into the first plane. Finally, the target area is processed so as to extract the information.
    Type: Application
    Filed: June 7, 2002
    Publication date: February 13, 2003
    Inventors: Karl Astrom, Andreas Bjorklund, Martin Sjolin, Markus Andreasson