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公开(公告)号：US20240362893A1
公开(公告)日：2024-10-31
申请号：US18616836
申请日：2024-03-26
申请人： Axis AB
发明人： Ludvig HASSBRING , Song YUAN
IPC分类号： G06V10/764 , G06T7/194
CPC分类号： G06V10/764 , G06T7/194 , G06T2207/10016
摘要： The present disclosure relates to methods, systems and non-transitory computer-readable storage mediums for detecting an object of a first object type in a video sequence. A first algorithm is used to detect areas or objects in the scene as captured in the video stream that have an uncertain object type status. A second algorithm is used to provide a background model of the video sequence. For areas or objects having the uncertain object type status, the background model is used to check if the area or object is considered to be part of the background or the foreground in the video sequence. If the area or object is determined to belong to the foreground, the area or object is classified as the first object type. If the area or object is determined to not belong to the foreground, the area or object is not classified as the first object type.
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2.发明授权公开(公告)号：US12131518B2
公开(公告)日：2024-10-29
申请号：US17539261
申请日：2021-12-01
申请人： Axis AB
发明人： Niclas Danielsson , Haochen Liu
IPC分类号： G06V10/74 , G06N3/04 , G06V10/44 , G06V10/762 , G06V10/82
CPC分类号： G06V10/761 , G06N3/04 , G06V10/44 , G06V10/762 , G06V10/82
摘要： A method and a device associate an object detection in a first frame with an object detection in a second frame using a convolutional neural (CNN) network trained to determine feature vectors such that object detections relating to separate objects are arranged in separate clusters. The CNN determines a reference set of feature vectors associated with the object detection in the first frame, and candidate sets of feature vectors associated with a respective one of identified areas corresponding to object detections in the second frame. A set of closest feature vectors is determined, and then measure of closeness to the reference set of feature vectors is determined for each candidate. A respective weight is determined for each object detection in the second frame. The object detection in the first frame is associated with one of the object detections in the second frame based on the assigned weights.
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公开(公告)号：USD1048012S1
公开(公告)日：2024-10-22
申请号：US29890542
申请日：2023-04-25
申请人： AXIS AB
摘要： FIG. 1 is a perspective view of a keyboard in accordance with our design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a rear elevational view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines represent portions of the keyboard that form no part of the claimed design.-
公开(公告)号：US12120421B2
公开(公告)日：2024-10-15
申请号：US17570774
申请日：2022-01-07
申请人： Axis AB
IPC分类号： H04N23/65 , G06T5/00 , G06V20/40 , G11B20/10 , G11B27/028
CPC分类号： H04N23/651 , G06T5/00 , G06V20/44 , G11B20/10527 , G11B27/028 , G11B2020/10712
摘要： A method of providing an event-initiated video sequence, comprises a pre-event video sequence and a post-event video sequence. The pre-event image frames are stored in a non-processed format until such time that an event is taking place. By postponing the image processing of the pre-event video sequence, power savings are accomplished.
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公开(公告)号：US20240296679A1
公开(公告)日：2024-09-05
申请号：US18435471
申请日：2024-02-07
申请人： Axis AB
发明人： Björn BENDERIUS
IPC分类号： G06V20/52 , G06T3/40 , G06T5/92 , G06V10/56 , G06V10/764
CPC分类号： G06V20/52 , G06T3/40 , G06T5/92 , G06V10/56 , G06V10/764 , G06T2207/20132 , G06V2201/07
摘要： A computer-implemented method in a processor device of a camera, the method comprising: acquiring image frames comprising video data, communicating with a receiver device for continuously transmitting a video stream to the receiver device over a communication network; detecting at least one object in the image frames of the video data, the detected at least one object belong to at least one predetermined object class selected as surveillance target; cropping sub-areas in the image frames of the video data, the sub-areas including the at least one detected object, and adding the cropped sub-areas to image frames of the video stream being continuously transmitted as a single video stream to the receiver device.
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公开(公告)号：US20240292168A1
公开(公告)日：2024-08-29
申请号：US18442521
申请日：2024-02-15
申请人： Axis AB
发明人： Henrik Dunér , Susanne Dunér
CPC分类号： H04R29/004 , H04R1/083
摘要： A method for determining a status of a microphone comprises inducing a piezoelectric component, located in a vicinity of and in mechanical connection with the microphone, to emit a predetermined impulse waveform; determining whether a response signal waveform from the microphone corresponds to the predetermined impulse waveform; and upon the response signal waveform from the microphone corresponding to the predetermined impulse waveform, determining that the status of the microphone is operational.
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公开(公告)号：US20240276023A1
公开(公告)日：2024-08-15
申请号：US18410396
申请日：2024-01-11
申请人： Axis AB
发明人： Viktor EDPALM , Song YUAN
IPC分类号： H04N19/85 , H04N19/136 , H04N19/172 , H04N19/176 , H04N19/182 , H04N19/184 , H04N19/186 , H04N19/20
CPC分类号： H04N19/85 , H04N19/136 , H04N19/172 , H04N19/176 , H04N19/182 , H04N19/184 , H04N19/186 , H04N19/20
摘要： A method for encoding an image frame, performed by an image processing device, comprising obtaining image data, and identifying an image area in an image frame based on that the image area fulfilling an identification criterion. The method further comprises determining a bit depth reduction factor for the identified image area by analyzing the image data in the identified image area, and replacing some of the bit values of the pixel values in the identified image area with dummy values. How many of the bit values that are replaced with dummy values is defined by the bit depth reduction factor. The method comprises encoding the image frame upon said some of the bit values having been replaced in the identified image area.
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公开(公告)号：US20240273679A1
公开(公告)日：2024-08-15
申请号：US18433962
申请日：2024-02-06
申请人： Axis AB
发明人： Björn BENDERIUS
IPC分类号： G06T5/50
CPC分类号： G06T5/50 , G06T2207/20221
摘要： A method for fusing a primary image (P) and a secondary image (S) into a target image comprises determining a local noise level of a region of the primary image; deriving a low-frequency, LF, component (PLF) from said region of the primary image and a high-frequency, HF, component (SHF) from a corresponding region of the secondary image, wherein the LF and HF components refer to a common cut-off frequency; combining the LF component and the HF component into a target image region, wherein the HF component's relative contribution to the target image region increases gradually with the local noise level; and repeating the preceding operations and merging all output target image regions thus obtained into the target image. A system implementing said method is also provided.
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公开(公告)号：US12063460B2
公开(公告)日：2024-08-13
申请号：US17943263
申请日：2022-09-13
申请人： Axis AB
摘要： A method for suppressing chromatic aberration, especially blue or red fringing, in a digital image with multiple color channels is disclosed. The method comprises negatively correcting a first color channel by subtracting an overshoot component of the first color channel. The subtraction is subject to a lower threshold, which is dependent on a local value of at least one further color channel.
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公开(公告)号：USD1037251S1
公开(公告)日：2024-07-30
申请号：US29831432
申请日：2022-03-21
申请人： Axis AB
摘要： FIG. 1 is a top, front, right perspective view of an access control device in accordance with our design;
FIG. 2 is a top, rear, left perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a right side elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a rear elevational view thereof.
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