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公开(公告)号：US12118731B2
公开(公告)日：2024-10-15
申请号：US18172411
申请日：2023-02-22
Applicant: Axis AB
Inventor： Ludvig Hassbring , Jessica Nilsson , Song Yuan
CPC classification number: G06T7/20 , G06F21/6245 , G06V20/52 , G06T2207/10016
Abstract: A method of masking in an output image stream includes receiving an input image stream capturing a scene, processing the input image stream to generate the output image stream, including using a detector to detect objects in the scene and a tracker to track objects in the scene based on information provided by the detector, and further including to generate a particular output image of the output image stream by checking whether there exists a particular area in the scene in which an evaluation of a historical performance of the detector and/or tracker fulfills at least one condition, and to, if confirming that such a particular area exists, mask the particular area of the scene in the particular output image. A corresponding device, computer program, and computer program product are also provided.
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公开(公告)号：US20240221256A1
公开(公告)日：2024-07-04
申请号：US18532227
申请日：2023-12-07
Applicant: Axis AB
Inventor： Song YUAN , Ludvig Hassbring , Jessica Nilsson
IPC: G06T11/60 , G06T3/40 , G06T3/60 , H04N19/172 , H04N19/60
CPC classification number: G06T11/60 , G06T3/40 , G06T3/60 , H04N19/172 , H04N19/60
Abstract: A method for rendering a text string in a digital raster image suitable for block-wise transform coding, the method comprising: obtaining a partition of an image area into coding blocks for the block-wise transform coding; representing the text string as a plurality of graphical elements from a typeface which are arranged according to a tentative layout in the image area, wherein the tentative layout defines at least a position, orientation and size of each graphical element; modifying the tentative layout by applying a spectrum sparsening operation to at least one nonempty coding block, thereby obtaining a modified layout; and rendering a digital raster image of the graphical elements arranged according to the modified layout.
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公开(公告)号：US20230298185A1
公开(公告)日：2023-09-21
申请号：US18172411
申请日：2023-02-22
Applicant: Axis AB
Inventor： Ludvig HASSBRING , Jessica Nilsson , Song Yuan
CPC classification number: G06T7/20 , G06V20/52 , G06F21/6245 , G06T2207/10016
Abstract: A method of masking in an output image stream includes receiving an input image stream capturing a scene, processing the input image stream to generate the output image stream, including using a detector to detect objects in the scene and a tracker to track objects in the scene based on information provided by the detector, and further including to generate a particular output image of the output image stream by checking whether there exists a particular area in the scene in which an evaluation of a historical performance of the detector and/or tracker fulfills at least one condition, and to, if confirming that such a particular area exists, mask the particular area of the scene in the particular output image. A corresponding device, computer program, and computer program product are also provided.
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