Noréns Patentbyrå AB

A camera (300) and a sensor unit (200) for mounting in the camera (300) are disclosed. The sensor unit (200) comprises a housing (210, 211) arranged to partially enclose an optical filter assembly (100). The optical filter assembly (100) comprises a mount (110) configured to receive and support an optical filter (121, 122), and a sensor gasket (127) arranged between the optical filter (121, 122) and an image sensor arrangement (130). The image sensor arrangement (130) and the sensor gasket (127) cooperate to fixate the optical filter (121, 122) relatively the mount (110). The optical filter assembly (100) comprises a first heat conducting gasket (141) arranged between the mount (110) and the image sensor arrangement (130). The housing (210) comprises a second heat conducting gasket (142) arranged between the housing (210, 211) and the mount (110).

A method and a computing apparatus (110) for determining adjusted calibration information for a system (100) are disclosed. The computing apparatus (110) obtains (A110) preliminary calibration information for the system (100), wherein the preliminary calibration information indicates a preliminary three-dimensional rotation for the first image sensor (121) and the second image sensor (122) of the system (100), and obtains (A120) a plurality of point pairs, each point pair representing a respective observation of a detected object (130) projected onto a respective two-dimensional image plane of each of the first image sensor (121) and the second image sensor (122). The computing apparatus (110) determines (A130) the adjusted calibration information for the system (100) by solving (A140) an optimization problem whose objective function is dependent on the adjusted calibration information, the objective function being formulated in terms of a reprojection error and a difference measure between triangulated distances and known distances.

A humidity measuring device (100) for measuring humidity of a construction (1) comprising a cementitious material (2) and a related method are disclosed. A casing (110) of the device (100) has a first set (111) of through-holes and a second set (112) of through-holes. A cavity (130) of the casing (110) is in fluid communication with the first and second sets (111, 112) of through-holes. A first vapor-permeable membrane (151) is arranged at the first set (111) of through-holes. A second vapor-permeable membrane (152) is arranged at the second set (112) of through-holes. At least one of the first and second vapor-permeable membranes (151, 152) is oleophobic and hydrophobic.

Method for tracking an object (10) moving through a three-dimensional space (1) within a field of view (111) of a digital camera (110), comprising: obtaining from a radar (120) directional, radial distance and/or speed information (126) regarding a hypothetical moving objects (30); determining, based on the information (126) and without taking into consideration information from the digital camera (110), two hypothetical three-dimensional radar-based trajectories that are transformed into image plane coordinates hypothetical two-dimensional radar-based trajectories; obtaining a series of images (122) of the three-dimensional space (1), that are analyzed to detect a two-dimensional camera-based trajectory; mapping, in the image plane coordinates, the two-dimensional camera-based trajectory to one of the hypothetical two-dimensional radar-based trajectories; and determining a three-dimensional trajectory (11) based on the two-dimensional camera-based trajectory in combination with hypothetical two-dimensional radar-based trajectory, but without considering directional information associated with the mapped hypothetical two-dimensional radar-based trajectory.

A method and a tracking managing subsystem (111) for enabling management of faults relating to the tracking managing subsystem (111) and a tracking assembly (115) communicatively connected thereto. The method comprises obtaining (B110), from the tracking assembly (115), a tracking stream, which comprises tracking data maps, and obtaining (B120) a set of system parameters. The method further comprises deriving (B130) a set of blobs by applying a blob detection procedure to at least two tracking data maps of the tracking stream, and sending (B140) the set of blobs and the set of system parameters.

Method for tracking an object (10) moving through a three-dimensional space (1) within a field of view (111) of a camera (110), comprising:obtaining from a radar (120) directional information (126) regarding a hypothetical moving objects (30) and determining a hypothetical radar-based trajectory;obtaining from the camera (110) a series of consecutively captured images (122) and identifying a hypothetical camera-based object trajectory;correlating the hypothetical camera-based trajectory to the hypothetical radar-based trajectory;determining the object trajectory as a hypothetical three-dimensional trajectories based on the hypothetical camera-based trajectory and the hypothetical radar-based trajectory.The method further comprises feeding back information relating to the three-dimensional trajectory (11) to alter the results of analyzing of the images.

Method for tracking an object (10) moving through a three-dimensional space (1) within a field of view (111) of a digital camera (110), comprising: obtaining from a radar (120) directional information (126) regarding the object (10) and from the digital camera (110) a series of consecutively captured images (122); determining a region of interest (123) corresponding to a location in the consecutively captured images (122) of the object (10); determining if a pixel (124) is a blob candidates based on region of interest (123) and form correlating blobs (125) across the images (122) to determine a trajectory (11). The determining blob candidates (124) is performed based on the region of interest (123) by determining of what pixels are blob candidates as a function of the region of interest.

A method and a tracking managing subsystem (111) for providing blobs relating to tracking of a sports projectile are disclosed. The method comprises obtaining (A110), from the tracking assembly (115), a tracking stream including tracking data maps, which are associated with timestamps, wherein each tracking data map of the tracking data maps is associated with a respective timestamp of the timestamps, and obtaining (A120) a set of transform parameters. Furthermore, the method comprises deriving (A130) a set of blobs by applying a blob detection procedure to at least two tracking data maps of the tracking stream, and sending (A140) the set of blobs and the set of transform parameters.

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