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公开(公告)号：US10070053B2
公开(公告)日：2018-09-04
申请号：US15483579
申请日：2017-04-10
申请人： Axis AB
发明人： Per Kannermark , Andreas Nilsson , Gustav Träff
CPC分类号： H04N5/23225 , G06K9/00771 , H04N5/144 , H04N5/23212 , H04N5/23219
摘要： The present invention relates to a method and a camera for determining an image adjustment parameter. The method includes receiving a plurality of images representing an image view, detecting from the plurality of images events of a specific event type, identifying a location within the image view where the event of the specific type is present, determining a presence value of each of the identified locations, and determining an image adjustment parameter based on data from an adjustment location within the image view. The adjustment location is determined based on the presence value in each location of a plurality of locations within the image view.
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公开(公告)号：US20170214850A1
公开(公告)日：2017-07-27
申请号：US15483579
申请日：2017-04-10
申请人： Axis AB
发明人： Per Kannermark , Andreas Nilsson , Gustav Träff
CPC分类号： H04N5/23225 , G06K9/00771 , H04N5/144 , H04N5/23212 , H04N5/23219
摘要： The present invention relates to a method and a camera for determining an image adjustment parameter. The method includes receiving a plurality of images representing an image view, detecting from the plurality of images events of a specific event type, identifying a location within the image view where the event of the specific type is present, determining a presence value of each of the identified locations, and determining an image adjustment parameter based on data from an adjustment location within the image view. The adjustment location is determined based on the presence value in each location of a plurality of locations within the image view.
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公开(公告)号：US20160295131A1
公开(公告)日：2016-10-06
申请号：US15088787
申请日：2016-04-01
申请人： Axis AB
发明人： Jonas Hjelmström , Andreas Nilsson
CPC分类号： H04N5/2628 , G06T3/0093 , G06T5/006 , G06T7/13 , G06T7/80 , H04N5/217 , H04N5/3572 , H04N17/002
摘要： A method and apparatus for determining a focal-length setting of a lens mounted to a camera is disclosed. In a method for determining a focal-length of a lens mounted to a camera, a distorted image of a scene is captured. A distortion-correction function is applied on the distorted image or on a portion of the distorted image. A most representative distortion-correction function is identified and a current focal-length setting for the lens is identified by correlating the identification to a data compilation.
摘要翻译： 公开了一种用于确定安装到相机的镜头的焦距设置的方法和装置。 在确定安装到相机的透镜的焦距的方法中，捕获场景的失真图像。 失真校正功能应用于失真图像或失真图像的一部分。 识别最具代表性的失真校正功能，并且通过将识别与数据汇编相关联来识别用于透镜的当前焦距设置。
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公开(公告)号：US09965835B2
公开(公告)日：2018-05-08
申请号：US14555803
申请日：2014-11-28
申请人： Axis AB
摘要： A method and system are disclosed. The method may include determining a histogram of intensity values for pixels in image sensor data in which the histogram is bimodal. The method may include determining a breakpoint between the two modes. The histogram may include a first distribution of intensity values below the breakpoint and a second distribution of intensity values above the breakpoint. The method may include generating output intensity values. Generating output intensity values may include compressing the first distribution of intensity values of the pixels with intensity values below the breakpoint, stretching the second distribution of intensity values of the pixels with intensity values above the breakpoint, and generating an output image based on the output intensity values.
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公开(公告)号：US20180124329A1
公开(公告)日：2018-05-03
申请号：US15852311
申请日：2017-12-22
申请人： Axis AB
发明人： Jonas Hjelmström , Andreas Nilsson
CPC分类号： H04N5/2628 , G06T3/0093 , G06T5/006 , G06T7/13 , G06T7/80 , H04N5/217 , H04N5/3572 , H04N17/002
摘要： A method and apparatus for determining a focal-length setting of a lens mounted to a camera. In a method for determining a focal-length of a lens mounted to a camera, a distorted image of a scene is captured. A distortion-correction function is applied on the distorted image or on a portion of the distorted image. A most representative distortion-correction function is identified and a current focal-length setting for the lens is identified by correlating the identification to a data compilation.
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公开(公告)号：US20160295115A1
公开(公告)日：2016-10-06
申请号：US15049952
申请日：2016-02-22
申请人： AXIS AB
发明人： Jonas Hjelmström , Andreas Nilsson
IPC分类号： H04N5/232
CPC分类号： H04N5/23287 , H04N5/23212 , H04N5/23254 , H04N5/23258 , H04N5/23267
摘要： In a method for image stabilization a number of operations are performed to stabilize an image and to output a focal length value. The steps include capturing video by means of a video camera with unknown focal length running an image stabilization process operating on an input from a hardware detector detecting the displacement of the camera and on an adjustable focal length value. Inter-image displacement is corrected based on the input from the hardware detector and the adjustable focal length value. By evaluating the displacement and adjusting the focal length value until a satisfactory image stabilization is achieved a value of the focal length may be output.
摘要翻译： 在用于图像稳定的方法中，执行多个操作以稳定图像并输出焦距值。 这些步骤包括通过具有未知焦距的摄像机拍摄视频，该视频摄像机运行在检测摄像机的位移的硬件检测器的输入上操作的图像稳定处理以及可调焦距值。 基于来自硬件检测器的输入和可调焦距值来校正图像间位移。 通过评估位移并调节焦距值直到获得令人满意的图像稳定，可以输出焦距值。
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公开(公告)号：US20140098286A1
公开(公告)日：2014-04-10
申请号：US14043595
申请日：2013-10-01
申请人： AXIS AB
发明人： Per KANNERMARK , Andreas Nilsson
IPC分类号： H04N5/232
CPC分类号： H04N5/23241 , H04N5/23206
摘要： A monitoring camera is connected to an external power source. The external power source has an external maximum power level. Image data is being processed in a first processing state. The monitoring camera detects (202) an event and determines (206) a type of the detected event. An amount of energy in an energy accumulator is determined (208) in the monitoring camera. Based on the type of the event and based on the external maximum power level and based on the determined amount of energy in the energy accumulator, a second processing state is determined (210). The second processing state requires a power level that is higher than the external maximum power level. Image data is then processed (212) in the second processing state.
摘要翻译： 监控摄像机连接到外部电源。 外部电源具有外部最大功率电平。 正在以第一处理状态处理图像数据。 监控摄像机检测（202）事件并确定（206）检测到的事件的类型。 在监控摄像机中确定能量累加器中的能量（208）（208）。 基于事件的类型并且基于外部最大功率电平并且基于确定的能量累加器中的能量的量，确定第二处理状态（210）。 第二处理状态需要高于外部最大功率电平的功率电平。 然后在第二处理状态下对图像数据进行处理（212）。
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公开(公告)号：US20160155218A1
公开(公告)日：2016-06-02
申请号：US14555803
申请日：2014-11-28
申请人： Axis AB
摘要： A method and system are disclosed. The method may include determining a histogram of intensity values for pixels in image sensor data in which the histogram is bimodal. The method may include determining a breakpoint between the two modes. The histogram may include a first distribution of intensity values below the breakpoint and a second distribution of intensity values above the breakpoint. The method may include generating output intensity values. Generating output intensity values may include compressing the first distribution of intensity values of the pixels with intensity values below the breakpoint, stretching the second distribution of intensity values of the pixels with intensity values above the breakpoint, and generating an output image based on the output intensity values.
摘要翻译： 公开了一种方法和系统。 该方法可以包括确定直方图是双峰的图像传感器数据中的像素的强度值的直方图。 该方法可以包括确定两种模式之间的断点。 直方图可以包括低于断点的强度值的第一分布和高于断点的强度值的第二分布。 该方法可以包括产生输出强度值。 生成输出强度值可以包括以强度值低于断点压缩像素的强度值的第一分布，用强度值高于断点的像素的强度值的第二分布进行拉伸，以及基于输出强度生成输出图像 价值观。
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公开(公告)号：US08964113B2
公开(公告)日：2015-02-24
申请号：US14043595
申请日：2013-10-01
申请人： AXIS AB
发明人： Per Kannermark , Andreas Nilsson
CPC分类号： H04N5/23241 , H04N5/23206
摘要： A monitoring camera is connected to an external power source. The external power source has an external maximum power level. Image data is being processed in a first processing state. The monitoring camera detects (202) an event and determines (206) a type of the detected event. An amount of energy in an energy accumulator is determined (208) in the monitoring camera. Based on the type of the event and based on the external maximum power level and based on the determined amount of energy in the energy accumulator, a second processing state is determined (210). The second processing state requires a power level that is higher than the external maximum power level. Image data is then processed (212) in the second processing state.
摘要翻译： 监控摄像机连接到外部电源。 外部电源具有外部最大功率电平。 正在以第一处理状态处理图像数据。 监控摄像机检测（202）事件并确定（206）检测到的事件的类型。 在监控摄像机中确定能量累加器中的能量（208）（208）。 基于事件的类型并且基于外部最大功率电平并且基于确定的能量累加器中的能量的量，确定第二处理状态（210）。 第二处理状态需要高于外部最大功率电平的功率电平。 然后在第二处理状态下对图像数据进行处理（212）。
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公开(公告)号：US10091437B2
公开(公告)日：2018-10-02
申请号：US15852311
申请日：2017-12-22
申请人： Axis AB
发明人： Jonas Hjelmström , Andreas Nilsson
摘要： A method and apparatus for determining a focal-length setting of a lens mounted to a camera. In a method for determining a focal-length of a lens mounted to a camera, a distorted image of a scene is captured. A distortion-correction function is applied on the distorted image or on a portion of the distorted image. A most representative distortion-correction function is identified and a current focal-length setting for the lens is identified by correlating the identification to a data compilation.
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