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公开(公告)号：US11653084B2
公开(公告)日：2023-05-16
申请号：US17463392
申请日：2021-08-31
Applicant: Axis AB
Inventor： Björn Benderius , Jimmie Jönsson , Johan Jeppsson Karlin , Niclas Svensson
CPC classification number: H04N23/617 , G06T7/70 , G06V20/41 , H04N23/61 , H04N23/76 , G06T2207/10016 , G06V20/44 , H04N23/71
Abstract: A method of configuring a camera comprising: collecting a video data with the camera, providing a plurality of imaging profiles, each imaging profile being associated with a set of scene characteristics, for each imaging profile, generating a spatial output data in dependence on the video data and the set of scene characteristics of the imaging profile, wherein the spatial output data is indicative of spatial locations of events detected in the video data matching one or more of the scene characteristics, performing a comparison of the spatial output data of each of the plurality of imaging profiles, selecting a preferred imaging profile in dependence on the comparison, configuring the camera to operate according to the preferred imaging profile.
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Patent Agency Ranking
公开(公告)号：US20180278849A1
公开(公告)日：2018-09-27
申请号：US15928722
申请日：2018-03-22
Applicant: Axis AB
Inventor： Fredrik Pihl , Xing Danielsson Fan , Björn Benderius , Viktor Edpalm , Niclas Svensson , Henrik Eliasson
IPC: H04N5/232 , H04N19/139 , H04N19/105 , H04N19/154 , H04N19/177
CPC classification number: H04N5/23267 , H04N5/23229 , H04N5/23232 , H04N5/23254 , H04N5/243 , H04N19/105 , H04N19/139 , H04N19/154 , H04N19/177
Abstract: A method for controlling a video camera which is configured to capture and process image frames prior to encoding. The method comprises determining whether the video camera is going to encode an image frame as an intra-frame or an inter-frame. If the image frame is going to be encoded as an inter-frame, the video camera is controlled to capture and process the image frame using first settings prior to encoding. If the image frame is going to be encoded as an intra-frame, the video camera is controlled to capture and process the image frame using second settings prior to encoding, wherein the second settings are modified in relation to the first settings to further reduce a level of noise in the image frame.
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公开(公告)号：US10531001B2
公开(公告)日：2020-01-07
申请号：US15928722
申请日：2018-03-22
Applicant: Axis AB
Inventor： Fredrik Pihl , Xing Danielsson Fan , Björn Benderius , Viktor Edpalm , Niclas Svensson , Henrik Eliasson
IPC: H04N5/232 , H04N19/139 , H04N19/105 , H04N19/177 , H04N19/154 , H04N5/243
Abstract: A method for controlling a video camera which is configured to capture and process image frames prior to encoding. The method comprises determining whether the video camera is going to encode an image frame as an intra-frame or an inter-frame. If the image frame is going to be encoded as an inter-frame, the video camera is controlled to capture and process the image frame using first settings prior to encoding. If the image frame is going to be encoded as an intra-frame, the video camera is controlled to capture and process the image frame using second settings prior to encoding, wherein the second settings are modified in relation to the first settings to further reduce a level of noise in the image frame.
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公开(公告)号：US20180278953A1
公开(公告)日：2018-09-27
申请号：US15928798
申请日：2018-03-22
Applicant: Axis AB
Inventor： Anton Öhrn , Viktor Edpalm , Henrik Eliasson , Björn Benderius , Niclas Svensson , Xing Danielsson Fan , Fredrik Pihl
IPC: H04N19/55 , H04N19/182 , H04N19/593
CPC classification number: H04N19/55 , H04N19/117 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/182 , H04N19/503 , H04N19/593
Abstract: A method of encoding a video stream comprising receiving a frame of a video stream to be encoded, performing motion detection in the frame to identify steady regions, and temporally filtering the frame so as to provide temporally filtered pixel values. For a pixel in the steady regions of the frame, the temporally filtered pixel value is used when encoding the pixel, on a condition that the pixel belongs to a block of pixels of the frame that will be intra-coded. On a condition that the pixel instead belongs to a block of pixels of the frame that will be inter-coded, a value that was used when encoding a corresponding pixel of the immediately preceding frame is used when encoding the pixel.
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公开(公告)号：US11252320B2
公开(公告)日：2022-02-15
申请号：US17194611
申请日：2021-03-08
Applicant: Axis AB
Inventor： Johan Jeppsson , Björn Benderius , Niclas Svensson , Fritjof Jonsson , Jonas Levin , Stefan Lindgren
Abstract: A method for determining whether a video camera is out-of-focus comprises: capturing image data; setting a focus setting difference threshold based on a filter function configured to filter the image data; adjusting a focus setting between a present focus setting and an altered focus setting such that a first subset of the image data is captured with the video camera being set in the present focus setting and such that a second subset of the image data is captured with the video camera being set in the altered focus setting, wherein the adjusting is performed such that a difference between the present and altered focus settings is below the threshold; forming the video stream by applying the filter function on the image data; determining first and second focus metrics of the image data; and determining whether the video camera is out-of-focus by comparing the first and second focus metrics.
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公开(公告)号：US10382780B2
公开(公告)日：2019-08-13
申请号：US15928798
申请日：2018-03-22
Applicant: Axis AB
Inventor： Anton Öhrn , Viktor Edpalm , Henrik Eliasson , Björn Benderius , Niclas Svensson , Xing Danielsson Fan , Fredrik Pihl
IPC: H04N19/117 , H04N19/137 , H04N19/107 , H04N19/55 , H04N19/593 , H04N19/182 , H04N19/503 , H04N19/159 , H04N19/176
Abstract: A method of encoding a video stream comprising receiving a frame of a video stream to be encoded, performing motion detection in the frame to identify steady regions, and temporally filtering the frame so as to provide temporally filtered pixel values. For a pixel in the steady regions of the frame, the temporally filtered pixel value is used when encoding the pixel, on a condition that the pixel belongs to a block of pixels of the frame that will be intra-coded. On a condition that the pixel instead belongs to a block of pixels of the frame that will be inter-coded, a value that was used when encoding a corresponding pixel of the immediately preceding frame is used when encoding the pixel.
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