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公开(公告)号：US09536154B2
公开(公告)日：2017-01-03
申请号：US14273181
申请日：2014-05-08
Applicant: Axis AB
Inventor： Markus Skans , Anders Johannesson , Jiandan Chen , Joakim Baltsen
IPC: G06K9/00 , G08B13/196 , G06K9/20 , G06K9/62 , G06T7/20
CPC classification number: G06K9/00771 , G06K9/00369 , G06K9/2036 , G06K9/2054 , G06K9/6201 , G06T7/292 , G06T2207/10016 , G06T2207/20112 , G06T2207/30196 , G06T2207/30232 , G08B13/19652 , G08B13/19686
Abstract: A method of monitoring a scene by a camera (7) comprises marking a part (14) of the scene with light having a predefined spectral content and a spatial verification pattern. An analysis image is captured of the scene by a sensor sensitive to the predefined spectral content. The analysis image is segmented based on the predefined spectral content, to find a candidate image region. A spatial pattern is detected in the candidate image region, and a characteristic of the detected spatial pattern is compared to a corresponding characteristic of the spatial verification pattern. If the characteristics match, the candidate image region is identified as a verified image region corresponding to the marked part (14) of the scene. Image data representing the scene is obtained, and image data corresponding to the verified image region is processed in a first manner, and remaining image data is processed in a second manner.
Abstract translation: 通过照相机（7）监视场景的方法包括用具有预定义频谱内容和空间验证模式的光标记场景的一部分（14）。 通过对预定义的光谱内容敏感的传感器捕获场景的分析图像。 分析图像基于预定义的光谱内容被分割，以找到候选图像区域。 在候选图像区域中检测空间图案，并将检测到的空间图案的特性与空间验证图案的相应特征进行比较。 如果特征匹配，则候选图像区域被识别为对应于场景的标记部分（14）的验证图像区域。 获得表示场景的图像数据，并且以第一方式处理与经验证的图像区域相对应的图像数据，并且以第二方式处理剩余的图像数据。
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公开(公告)号：US20140340525A1
公开(公告)日：2014-11-20
申请号：US14248959
申请日：2014-04-09
Applicant: Axis AB
Inventor： Anders Johannesson , Stefan Lundberg , Wilfried Rakow
IPC: H04N17/00
CPC classification number: H04N17/002 , G08B13/196 , G08B29/14 , G08B29/185 , G08B29/24
Abstract: There is provided a method for determining the reliability of a fault detection of a camera in a camera system. According to the method data relating to environmental conditions are received (204) and compared to accessed (202) criteria relating to environmental conditions external to the camera and affecting the reliability of the fault detection test. If the received data complies with the criteria it is determined (206) that the fault detection test gives a reliable result. This is advantageous in that false fault detection tests may be identified.
Abstract translation: 提供了一种用于确定相机系统中的相机的故障检测的可靠性的方法。 根据该方法，接收与环境条件相关的数据（204），并与与摄像机外部的环境条件相关的访问（202）标准进行比较，并影响故障检测测试的可靠性。 如果接收到的数据符合标准，则确定（206）故障检测测试给出可靠的结果。 这是有利的，因为可以识别虚假的故障检测测试。
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Patent Agency Ranking
公开(公告)号：US08982228B2
公开(公告)日：2015-03-17
申请号：US14038360
申请日：2013-09-26
Applicant: AXIS AB
Inventor： Per Kannermark , Anders Johannesson
CPC classification number: H04N5/2357 , H04N5/3532 , H04N5/376
Abstract: An image acquisition device and a method for capturing image data is disclosed. The method comprises exposing an image sensor to light from a scene, selecting substantially all rows of sensor pixels in an image sensor in a substantially random order, starting an exposure period for each row of sensor pixels in the image sensor in the order the rows were selected, buffering the rows of sensor pixels comprised in an image frame until all rows of the image frame have registered image data for the presently captured image frame, and outputting image data representing the image frame by outputting image data from each row of sensor pixels.
Abstract translation: 公开了一种用于捕获图像数据的图像获取装置和方法。 该方法包括将图像传感器曝光到场景的光，基本上随机的顺序选择图像传感器中的基本上所有行的传感器像素，以图像传感器中的行的顺序为每行传感器像素开始曝光周期 选择，缓冲包括在图像帧中的传感器像素的行，直到图像帧的所有行都具有用于当前捕获的图像帧的已登记图像数据，并且通过从每行传感器像素输出图像数据来输出表示图像帧的图像数据。
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公开(公告)号：US09438814B2
公开(公告)日：2016-09-06
申请号：US14260860
申请日：2014-04-24
Applicant: Axis AB
Inventor： Jonas Hjelmstrom , Anders Johannesson
CPC classification number: H04N5/2355 , H04N5/2351 , H04N5/2356 , H04N5/238
Abstract: The present invention relates to a method (300) for reducing stray light in an output image of a scene, said method comprising; providing (301) a camera (100) comprising a lens assembly (102, 202), providing (302) an aperture unit (103, 203) having an aperture gate (204a, 204b) in an aperture plane being orthogonal to an optical axis (OA) of said lens assembly (102, 202), said aperture gate (204a, 204b) being adjustable in said aperture plane, acquiring (303), by means of said camera (100), a plurality of images of said scene, wherein each image of said plurality of images is acquired using an unique aperture gate setting, wherein each of said unique aperture gate settings correspond to a unique combination of a position and a shape of said aperture gate (204a, 204b) in said aperture plane, analyzing (305) said plurality of images for generating data pertaining to a difference in stray light content with respect to said plurality of images, and producing (306) said output image based on said data pertaining to said difference in stray light content.
Abstract translation: 本发明涉及一种用于减少场景的输出图像中的杂散光的方法（300），所述方法包括： 提供（301）包括透镜组件（102,202）的相机（100），提供（302）孔径单元（103,203），孔径单元（103,203）在孔平面中具有与光轴正交的孔径门（204a，204b） （102,202）的所述多个图像（OA），所述孔径门（204a，204b）可在所述孔径平面中调节，通过所述照相机（100）获取（303）所述场景的多个图像， 其中所述多个图像的每个图像是使用唯一孔径门设置来获得的，其中所述唯一孔径门设置中的每一个对应于所述孔径平面中所述孔径门（204a，204b）的位置和形状的唯一组合， 分析（305）所述多个图像，用于产生关于所述多个图像的杂散光含量差异的数据，并且基于与所述杂散光含量的差异有关的所述数据产生（306）所述输出图像。
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公开(公告)号：US20140320686A1
公开(公告)日：2014-10-30
申请号：US14260860
申请日：2014-04-24
Applicant: Axis AB
Inventor： Jonas HJELMSTROM , Anders Johannesson
IPC: H04N5/235
CPC classification number: H04N5/2355 , H04N5/2351 , H04N5/2356 , H04N5/238
Abstract: The present invention relates to a method (300) for reducing stray light in an output image of a scene, said method comprising; providing (301) a camera (100) comprising a lens assembly (102, 202), providing (302) an aperture unit (103, 203) having an aperture gate (204a, 204b) in an aperture plane being orthogonal to an optical axis (OA) of said lens assembly (102, 202), said aperture gate (204a, 204b) being adjustable in said aperture plane, acquiring (303), by means of said camera (100), a plurality of images of said scene, wherein each image of said plurality of images is acquired using an unique aperture gate setting, wherein each of said unique aperture gate settings correspond to a unique combination of a position and a shape of said aperture gate (204a, 204b) in said aperture plane, analyzing (305) said plurality of images for generating data pertaining to a difference in stray light content with respect to said plurality of images, and producing (306) said output image based on said data pertaining to said difference in stray light content.
Abstract translation: 本发明涉及一种用于减少场景的输出图像中的杂散光的方法（300），所述方法包括： 提供（301）包括透镜组件（102,202）的相机（100），提供（302）孔径单元（103,203），孔径单元（103,203）在孔平面中具有与光轴正交的孔径门（204a，204b） （102,202）的所述多个图像（OA），所述孔径门（204a，204b）可在所述孔径平面中调节，通过所述照相机（100）获取（303）所述场景的多个图像， 其中所述多个图像的每个图像是使用唯一孔径门设置来获得的，其中所述唯一孔径门设置中的每一个对应于所述孔径平面中所述孔径门（204a，204b）的位置和形状的唯一组合， 分析（305）所述多个图像，用于产生关于所述多个图像的杂散光含量差异的数据，并且基于与所述杂散光含量的差异有关的所述数据产生（306）所述输出图像。
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公开(公告)号：US08908046B1
公开(公告)日：2014-12-09
申请号：US14248959
申请日：2014-04-09
Applicant: Axis AB
Inventor： Anders Johannesson , Stefan Lundberg , Wilfried Rakow
CPC classification number: H04N17/002 , G08B13/196 , G08B29/14 , G08B29/185 , G08B29/24
Abstract: There is provided a method for determining the reliability of a fault detection of a camera in a camera system. According to the method data relating to environmental conditions are received (204) and compared to accessed (202) criteria relating to environmental conditions external to the camera and affecting the reliability of the fault detection test. If the received data complies with the criteria it is determined (206) that the fault detection test gives a reliable result. This is advantageous in that false fault detection tests may be identified.
Abstract translation: 提供了一种用于确定相机系统中的相机的故障检测的可靠性的方法。 根据该方法，接收与环境条件相关的数据（204），并与与摄像机外部的环境条件相关的访问（202）标准进行比较，并影响故障检测测试的可靠性。 如果接收到的数据符合标准，则确定（206）故障检测测试给出可靠的结果。 这是有利的，因为可以识别虚假的故障检测测试。
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公开(公告)号：US20140334676A1
公开(公告)日：2014-11-13
申请号：US14273181
申请日：2014-05-08
Applicant: Axis AB
Inventor： Markus SKANS , Anders Johannesson , Jiandan Chen , Joakim Baltsen
CPC classification number: G06K9/00771 , G06K9/00369 , G06K9/2036 , G06K9/2054 , G06K9/6201 , G06T7/292 , G06T2207/10016 , G06T2207/20112 , G06T2207/30196 , G06T2207/30232 , G08B13/19652 , G08B13/19686
Abstract: A method of monitoring a scene by a camera (7) comprises marking a part (14) of the scene with light having a predefined spectral content and a spatial verification pattern. An analysis image is captured of the scene by a sensor sensitive to the predefined spectral content. The analysis image is segmented based on the predefined spectral content, to find a candidate image region. A spatial pattern is detected in the candidate image region, and a characteristic of the detected spatial pattern is compared to a corresponding characteristic of the spatial verification pattern. If the characteristics match, the candidate image region is identified as a verified image region corresponding to the marked part (14) of the scene. Image data representing the scene is obtained, and image data corresponding to the verified image region is processed in a first manner, and remaining image data is processed in a second manner.
Abstract translation: 通过照相机（7）监视场景的方法包括用具有预定的频谱内容和空间验证模式的光标记场景的一部分（14）。 通过对预定义的光谱内容敏感的传感器捕获场景的分析图像。 分析图像基于预定义的光谱内容被分割，以找到候选图像区域。 在候选图像区域中检测空间图案，并将检测到的空间图案的特性与空间验证图案的相应特征进行比较。 如果特征匹配，则候选图像区域被识别为对应于场景的标记部分（14）的验证图像区域。 获取表示场景的图像数据，并且以第一方式处理与经验证的图像区域相对应的图像数据，并且以第二方式处理剩余的图像数据。
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