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公开(公告)号：US20210255457A1
公开(公告)日：2021-08-19
申请号：US17107085
申请日：2020-11-30
Applicant: Axis AB
Inventor： Hiroyuki Ide
Abstract: A camera having a heating arrangement comprising a heater arranged to supply heat to a window. A thermally conductive member is arranged in contact with a housing and with the heating arrangement, when a temperature at the conductive member is below a threshold, to transfer heat supplied by the heater to the housing. A thermally insulating member is arranged in proximity with the housing and the heating arrangement. The conductive and/or insulating member is configured to, when the temperature increases above the threshold during heater operation, change its extension to enable contact between the insulating member and the housing and between the insulating member and the heating arrangement, and to disable contact between the conductive member and the housing and between the conductive member and the heating arrangement, thereby thermally insulate the housing from the heater.
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92.发明授权公开(公告)号：US11082624B2
公开(公告)日：2021-08-03
申请号：US17096980
申请日：2020-11-13
Applicant: Axis AB
Inventor： Rikard Olajos , Ola Håkansson , Axel Thuresson
Abstract: A video camera system comprises an imaging system having a camera lens and an image sensor, and a retractable IR-cut filter, and a control unit for controlling the imaging system. The video camera system has a day-mode in which the IR-cut filter is arranged in front of the image sensor, and a night-mode in which the IR-cut filter is retracted from its position in front of the image sensor. Furthermore, the video camera has a field of view defined by properties of its imaging system, and it comprises a separate light-sensor for measuring an ambient light level so as to support a decision regarding when to actuate a transfer from night-mode to day-mode, or vice versa. The camera system is characterized in that the separate light sensor has imaging optics and is enabled for a variable field of view, which is aligned with a field of view of the video camera system, and in that a current field of view of the video camera system is used when selecting an active field of view of the separate light sensor.
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公开(公告)号：US20210224615A1
公开(公告)日：2021-07-22
申请号：US17143185
申请日：2021-01-07
Applicant: Axis AB
Inventor： Thomas WINZELL
Abstract: The present disclosure relates to a method performed by a people distinguishing system (1) for in an image distinguishing human beings in a crowd. The people distinguishing system identifies (1001) one or more detected objects classified as human beings (2) in an image (3) derived from a thermal camera (10) adapted to capture a scene in an essentially forward-looking angle. The people distinguishing system further identifies at least a first grouping (4) of adjoining pixels in the image, not comprised in the one or more detected human beings, having an intensity within a predeterminable intensity range. Moreover, the people distinguishing system determines (1003) a grouping pixel area (40) of the at least first grouping in the image. Furthermore, the people distinguishing system determines (1004) for at least a first vertical position (yexpected) in the image, based on head size reference data (5), an expected pixel area (xexpected) of a human head at the at least first vertical position. The people distinguishing system further compares (1005) at least a portion of the grouping pixel area with the expected head pixel area for the at least first vertical position. Moreover, the people distinguishing system determines (1006) that the at least first grouping comprises at least a first overlapping human being (6), when at least a first comparison resulting from the comparing exceeds a predeterminable conformity threshold.
The disclosure also relates to a people distinguishing system in accordance with the foregoing, a thermal camera comprising such people distinguishing system, and a respective corresponding computer program product and non-volatile computer readable storage medium.-
公开(公告)号：US20210203590A1
公开(公告)日：2021-07-01
申请号：US16731895
申请日：2019-12-31
Applicant: Axis AB
Inventor： Jon Malmquist , Johan Rönnåker , Emil Selinder , Mathias Bruce , Marcus Johansson
IPC: H04L12/733 , H04L12/46 , H04L12/709 , H04W88/04 , H04L29/08 , H04W4/021 , H04L29/06 , H04W76/11 , H04W76/12 , G07C9/27
Abstract: A device may include a memory storing instructions and a processor configured to execute the instructions to identify a communication link between a first domain object and a second domain object; identify a first endpoint associated with the first domain object and a second endpoint associated with the second domain object; and determine a location relationship between the first endpoint and the second endpoint. The processor may be further configured to select a communication mechanism based on the determined location relationship; instruct the first endpoint to communicate with the second endpoint using the selected communication mechanism; and instruct the second endpoint to communicate with the first endpoint using the selected communication mechanism.
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公开(公告)号：US20210200691A1
公开(公告)日：2021-07-01
申请号：US16731890
申请日：2019-12-31
Applicant: Axis AB
Inventor： Marcus Johansson , Emil Selinder , Jon Malmquist , Johan Rönnåker
IPC: G06F13/10
Abstract: A device may include a memory storing instructions and a processor configured to execute the instructions to receive, from a configuration client device, a request to register a resource; and identify a domain object associated with the resource, wherein the domain object corresponds to a logical entity representing a device or port, or corresponds to a logical entity controlling another resource included in another domain object. The processor may be further configured to select a domain object handler for the identified domain object; register the identified domain object with the selected domain object handler; and use the selected domain object handler to process messages associated with the registered domain object.
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Patent Agency Ranking
公开(公告)号：US20210195075A1
公开(公告)日：2021-06-24
申请号：US17082117
申请日：2020-10-28
Applicant: Axis AB
Inventor： Stefan LUNDBERG , Jonas HJELMSTRÖM
Abstract: A camera for introducing light pulses in an image stream, comprising an image sensor arranged to capture an image stream, the image sensor comprising a plurality of pixels arranged to capture light of a first wavelength range. The at least one of the plurality of pixels is covered by a first material which is arranged to transform light of a second wavelength range to light of the first wavelength range. Further the camera comprises a first light source arranged to emit light pulses of light of the second wavelength range onto the first material, thereby causing the image sensor to register light pulses in the at least one pixel covered by the first material.
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公开(公告)号：US20210185215A1
公开(公告)日：2021-06-17
申请号：US17086575
申请日：2020-11-02
Applicant: Axis AB
Inventor： Song YUAN , Martin SANTESSON
Abstract: High dynamic range imaging includes first image data captured using a first image sensor and a first exposure time, using a rolling shutter such that different lines within the first image data are captured at different times. Two or more instances of second image data are captured using second image sensors and second exposure times that are shorter than the first exposure time. The second image data are captured using a rolling shutter, and overlap at least in part with the first image data. A line of the first image data has a corresponding line in each instance of second image data, and the corresponding instances of second image data are captured at different second capture times. For a line in the first image data, the corresponding line from the instance of second image data is selected to be merged with the line in the first image data.
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公开(公告)号：US20210176435A1
公开(公告)日：2021-06-10
申请号：US17069185
申请日：2020-10-13
Applicant: Axis AB
Inventor： Anders KRÜGER
Abstract: A video management system for displaying video streams from a plurality of monitoring devices arranged in a network in a video display arrangement. Each monitoring device constitutes a node in the network and has a logical connection to at least one other node. The video management system is configured to: in response to a first input, zoom out from a first subset of views from a first monitoring device or a first group of monitoring devices to a second subset of views, by adding views from a predetermined number of monitoring devices having a direct logical connection to the first monitoring device or the group of monitoring devices, to the video display arrangement, thereby increasing a neighbor monitoring level by one; and in response to a second input, zoom in from the second subset of views thereby decreasing the neighbor monitoring level by one.
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公开(公告)号：US20210176411A1
公开(公告)日：2021-06-10
申请号：US17109520
申请日：2020-12-02
Applicant: Axis AB
Inventor： Thomas WINZELL , Jesper BENGTSSON , Mats BYLANDER
Abstract: Methods and apparatus, including computer program products, for detecting a problem with a thermal camera. A current contrast value is determined for the thermal camera. It is determined whether the current contrast value deviates from a reference contrast value by more than a predetermined value. In response to determining that the current contrast value deviates from the reference contrast value by more than a predetermined value and for more than a predetermined period of time, an indication of a problem with the thermal camera is provided.
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公开(公告)号：US20210176410A1
公开(公告)日：2021-06-10
申请号：US16952095
申请日：2020-11-19
Applicant: Axis AB
Inventor： Markus ANDERSSON , Stefan TRAN
Abstract: There is provided a computer implemented method for displaying a video stream of a scene (100) captured by a video capture device on a display of a client device. The method comprising: detecting a new event (112) in the scene, determining a new event area (114) in the scene within which the new event is detected, checking whether a prior event has been detected within the new event area during a predetermined time period preceding the new event, upon no prior event being detected during the predetermined time period, adding a visual indicator (116) to an image frame (103) temporally corresponding to the detection of the new event and to a number of subsequent image frames (103) of the video stream, wherein the visual indicator coincides with the new event area, and wherein the step of adding the visual indicator comprises gradually changing an appearance of the visual indicator throughout the number of subsequent image frames, and displaying the video stream with the added visual indicator on the display of the client device. There is also provided a related client device and a non-transitory computer-readable storage medium.
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