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公开(公告)号：EP3352454A1
公开(公告)日：2018-07-25
申请号：EP17152224.6
申请日：2017-01-19
申请人： Axis AB
CPC分类号： H04N5/365 , G06K9/6202 , G06K9/6215 , G06T5/002 , H04N5/378
摘要： A method for structural fixed pattern noise reduction in a video stream comprises:
for each target pixel (116) in a first image frame (114)
defining a first target pixel patch (118) including the target pixel (116),
defining a first search area (120) comprising the first target pixel patch (118),
for each pixel in the first search area
comparing a first pixel (124) patch around the pixel with the first target pixel patch (118),
using the pixel when calulating an average for the target pixel (118) if the similarity of the pixel patch (124) and the first target pixel patch (118) is within a first threshold,
and,
in a second image frame (114')
localizing a second target pixel (114'),
defining a second pixel seach area (120') comprising the second target pixel (116'),
for each pixel in the second search area (120')
comparing a second pixel patch (124') around the pixel of the second search area (120') with the first target pixel patch (116),
using the pixel of the second search area (124') when calculating an average of the first target pixel (116) if the similarity of the second pixel patch (124') and the first target pixel patch (118) is within a second threshold,
wherein the first image frame (114) and the second image frame (114') are separate image frames in the videostream, and wherein the location of the second target pixel is estimated from the location of the first target pixel(116), combined with camera directional data.-
公开(公告)号：EP3477941B1
公开(公告)日：2020-11-25
申请号：EP17198810.8
申请日：2017-10-27
申请人： Axis AB
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4.发明授权Method, device, and system for pre-processing a video stream for subsequent motion detection processing 有权用于为后续运动检测处理预处理视频流的方法，设备和系统
公开(公告)号：EP3016383B1
公开(公告)日：2017-06-21
申请号：EP14191461.4
申请日：2014-11-03
申请人： Axis AB
IPC分类号： H04N7/18 , H04N21/2343 , G06T5/00 , G06T5/50 , H04N5/77 , H04N21/4402 , G08B13/196
CPC分类号： H04N5/772 , G06T5/002 , G06T5/50 , G06T2207/10016 , G06T2207/20182 , G06T2207/20216 , G06T2207/30232 , G08B13/196 , G08B13/19602 , H04N7/183 , H04N21/234354 , H04N21/440254
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5.发明公开Method, device, and system for pre-processing a video stream for subsequent motion detection processing 有权过程，装置和系统用于预处理用于后续运动检测处理的视频流
公开(公告)号：EP3016383A1
公开(公告)日：2016-05-04
申请号：EP14191461.4
申请日：2014-11-03
申请人： Axis AB
IPC分类号： H04N7/18 , G06T7/20 , G08B13/196
CPC分类号： H04N5/772 , G06T5/002 , G06T5/50 , G06T2207/10016 , G06T2207/20182 , G06T2207/20216 , G06T2207/30232 , G08B13/196 , G08B13/19602 , H04N7/183 , H04N21/234354 , H04N21/440254
摘要： There is provided a method for pre-processing a video stream for subsequent motion detection processing. The method comprises receiving a video stream of images, wherein each image in the video stream is represented by a first plurality of bits; enhancing the video stream of images by, for each image in the video stream: comparing the image to at least one previous image in the video stream so as to identify pixels where the image differs from the at least one previous image in the video stream, enhancing the image in those pixels where the image differs from the at least one previous image in the video stream; and converting the enhanced video stream of images so as to produce a converted video stream of images for subsequent motion detection processing, wherein each image in the converted video stream is represented by a second plurality of bits being lower than the first plurality of bits.
摘要翻译： 提供了一种用于加工预用于后续运动检测处理的视频流的方法。 该方法包括接收图像的视频流，worin视频流中的每个图像是通过比特的第一组多个代表的; 通过增强图像的视频流，所述视频流中的每个图像：该图像的视频流中的与至少一个先前的图像，以识别其中图像从视频流中的至少一个先前图像不同的像素， 增强像素的图像，其中图像从视频流中的至少一个先前的图像的那些异; 和图像转换的增强型视频流，以产生用于后续运动检测处理的图像的转换后的视频流，worin转换后的视频流中的每个图像是通过比比特的第一多个低位比特的第二组多个代表。
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6.发明公开
公开(公告)号：EP3477941A1
公开(公告)日：2019-05-01
申请号：EP17198810.8
申请日：2017-10-27
申请人： Axis AB
发明人： Danielsson, Niclas , Danielsson Fan, Xing , Jakobsson, Anton , Johansson, Emanuel , Winzell, Thomas , Bengtsson, Jesper
摘要： There is provided a method and a controller for controlling a video processing unit to facilitate detection of newcomers in a first environment. The method comprises: capturing a thermal image of a human object in the first environment, the first environment being associated with a first climate; calculating, based on the thermal image, a thermal signature of a portion of the human object; determining that the human object has entered the first environment from a second environment when the thermal signature of the portion of the human object deviates from a predetermined thermal signature associated with the first environment, wherein the second environment is associated with a second, different, climate; and controlling the video processing unit to prioritize the human object over other human objects when processing video frames depicting the human object together with the other human objects.
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7.发明公开Method and system for detecting a need for recalibrating a microbolometer, and method and system for recalibrating a microbolometer 审中-公开方法和系统用于检测需要一个微辐射的重新校准和方法和系统用于重新校准微测辐射热
公开(公告)号：EP3062074A1
公开(公告)日：2016-08-31
申请号：EP15156872.2
申请日：2015-02-27
申请人： Axis AB
CPC分类号： G01J5/22 , G01J2005/0048 , G01J2005/0092 , G01J2005/067 , G01J2005/068
摘要： A method of detecting a need for recalibrating a microbolometer is disclosed, said microbolometer comprising a plurality of sensor pixels. The method comprises the steps of: for a predetermined number of monitored sensor pixels monitoring a response signal (S01), storing a first statistical measure (S02) representative of response values read over a first time period, storing a second statistical measure (S03) representative of response values read over a second time period, said second time period being later than said first time period, comparing said first statistical measure to said second statistical measure (S04), and if said second statistical measure differs from said first response range by more than a predetermined change, determining that said microbolometer needs recalibration (S06). A system for detecting a need for recalibration is also disclosed, as well as a method and a system for recalibrating a microbolometer.
摘要翻译： 检测是否需要用于重新校准微测辐射热的方法是游离缺失盘，说微辐射包括传感器像素的复数。 该方法包括以下步骤：为监测传感器像素监视存储第一统计测量的响应信号（S01）的预定数目（S02）代表响应值的读取在第一时间段期间，存储一个第二统计值（S03） 代表响应值的读取在第二时间段期间，所述第二时间段晚于所述第一时间段为，比较所述第一统计量度，所述第二统计值（S04），并且如果所述第二统计值通过从所述第一响应范围不同 超过规定的变化，确定所述微测需要重新校准（S06）。 一种用于检测是否需要重新校准gibt游离缺失光盘，以及一种方法和用于重新校准微测辐射热的系统的系统。
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公开(公告)号：EP3029600A1
公开(公告)日：2016-06-08
申请号：EP14195670.6
申请日：2014-12-01
申请人： Axis AB
CPC分类号： G06K9/00771 , G06K9/2018 , G06K9/66 , G06K9/685
摘要： Shape detection is used in thermal images for detecting objects of one or more object classes. The temperature of a detected object is used to verify that the detection is correct, by determining if a temperature characteristic of a detected object is within a predetermined temperature interval of the relevant object class. Environmental conditions, such as rain, snow or fog, impacting the amount of thermal energy reaching a thermal camera from an object, are taken into account by collecting temperature statistics for the detected objects, and using these statistics to update the temperature interval.
摘要翻译： 形状检测用于热图像中，用于检测一个或多个对象类别的对象。 检测对象的温度通过确定检测对象的温度特性是否处于相关对象类的预定温度间隔内，用于验证检测是否正确。 通过收集检测对象的温度统计数据，并使用这些统计信息来更新温度间隔，考虑了影响从物体到达热敏相机的热能的数量，如雨，雪或雾等环境条件。
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