Patents Assigned to Cognimatics AB
  • 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: 20180124380
    Abstract: A method and arrangement for calibrating stereo cameras in a vehicle is disclosed. A first image from a first camera is received, and a second image is received from a second camera, the first image and the second image comprise an overlap. One or more candidate points of the first image and of the second image are determined in the overlap. The candidate points of the first image are matched with the candidate points of the second image and pairs of corresponding candidate points are determined. A homography of the first camera is calculated based on the pairs of corresponding candidate points and a homography of the second camera is calculated based on the pairs of corresponding candidate points. The first camera and the second camera are calibrated by adjusting an intrinsic parameter or an extrinsic parameter of each respective camera, based on the calculated homography of each respective camera.
    Type: Application
    Filed: May 20, 2016
    Publication date: May 3, 2018
    Applicant: Cognimatics AB
    Inventors: Rikard Berthilsson, Siri Dovner, Ardö Håkan
  • 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
  • Patent number: 8111873
    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: Grant
    Filed: March 20, 2006
    Date of Patent: February 7, 2012
    Assignee: Cognimatics AB
    Inventors: Rikard Berthilsson, Karl Åström, Håkan Ardö
  • Publication number: 20090232365
    Abstract: A method, apparatus and computer readable medium for automatically recognizing a human face, which are adapted to: retrieve an image of the face; extract a number of feature patches from the image of the face; calculate a feature value for each feature patch, as a function of an image-derivate of the respective feature patch; and comparing the feature values with corresponding feature values of a number of feature patches of a reference image stored in an image database, for determining a recognition of the human face.
    Type: Application
    Filed: March 11, 2009
    Publication date: September 17, 2009
    Applicant: COGNIMATICS AB
    Inventors: Rikard Berthilsson, Erik Olausson