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公开(公告)号:US08229165B2
公开(公告)日:2012-07-24
申请号:US12373946
申请日:2007-07-27
IPC分类号: G06K9/00 , G01N23/201
CPC分类号: G01T1/295
摘要: A method of processing for a coded aperture imaging apparatus which is useful for target identification and tracking. The method uses a statistical scene model and, preferably using several frames of data, determines a likelihood of the position and/or velocity of one or more targets assumed to be in the scene. The method preferably applies a recursive Bayesian filter or Bayesian batch filter to determine a probability distribution of likely state parameters. The method acts upon the acquired data directly without requiring any processing to form an image.
摘要翻译: 一种用于编码孔径成像设备的方法,其对于目标识别和跟踪是有用的。 该方法使用统计场景模型,并且优选地使用几帧数据来确定假定在场景中的一个或多个目标的位置和/或速度的可能性。 该方法优选地应用递归贝叶斯滤波器或贝叶斯分块滤波器来确定可能的状态参数的概率分布。 该方法直接作用于获取的数据,而不需要任何处理来形成图像。
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公开(公告)号:US20110228895A1
公开(公告)日:2011-09-22
申请号:US13130914
申请日:2009-11-27
申请人: Kevin Dennis Ridley , Geoffrey Derek De Villiers , Christopher Williams Slinger , Malcolm John Alexander Strens
发明人: Kevin Dennis Ridley , Geoffrey Derek De Villiers , Christopher Williams Slinger , Malcolm John Alexander Strens
IPC分类号: G01N23/00
CPC分类号: G02B27/00 , G01J3/2846 , G01J4/04 , G02B2207/129 , G06K9/209 , H04N5/335 , H04N9/045 , H04N9/07
摘要: Optically diverse coded aperture imaging (CAI) includes imaging a scene which is multi-spectrally diverse or polarimetrically diverse. A CAI system allows light rays from a scene to pass to a detector array through a coded aperture mask within an optical stop. The mask has multiple apertures, and produces overlapping coded images of the scene on the detector array. Detector array pixels receive and sum intensity contributions from each coded image. The detector array provides output data for processing to reconstruct an image. The mask provides for multi-spectral information to become encoded in the data. A linear integral equation incorporating explicit wavelength dependence relates the imaged scene to the data. This equation is solved by Landweber iteration to derive a multi-spectral image. An image with multiple polarisation states (polarimetric diversity) may be derived similarly with a linear integral equation incorporating explicit polarisation dependence.
摘要翻译: 光学多样化编码孔径成像(CAI)包括对多光谱多样或多极化多样的场景进行成像。 CAI系统允许来自场景的光线通过光学停止器内的编码孔径掩模传递到检测器阵列。 掩模具有多个孔,并在检测器阵列上产生场景的重叠编码图像。 检测器阵列像素从每个编码图像接收和求和强度贡献。 检测器阵列提供用于处理以重建图像的输出数据。 掩模提供多光谱信息以便在数据中进行编码。 包含显式波长依赖性的线性积分方程将成像的场景与数据相关联。 该方程通过Landweber迭代求解得到多光谱图像。 具有多极化状态(偏振分集)的图像可以与包含明确的偏振依赖性的线性积分方程类似地导出。
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公开(公告)号:US20090279737A1
公开(公告)日:2009-11-12
申请号:US12373946
申请日:2007-07-27
IPC分类号: G06K9/00
CPC分类号: G01T1/295
摘要: A method of processing for a coded aperture imaging apparatus which is useful for target identification and tracking. The method uses a statistical scene model and, preferably using several frames of data, determines a likelihood of the position and/or velocity of one or more targets assumed to be in the scene. The method preferably applies a recursive Bayesian filter or Bayesian batch filter to determine a probability distribution of likely state parameters. The method acts upon the acquired data directly without requiring any processing to form an image.
摘要翻译: 一种用于编码孔径成像设备的方法,其对于目标识别和跟踪是有用的。 该方法使用统计场景模型,并且优选地使用几帧数据来确定假定在场景中的一个或多个目标的位置和/或速度的可能性。 该方法优选地应用递归贝叶斯滤波器或贝叶斯分块滤波器来确定可能的状态参数的概率分布。 该方法直接作用于获取的数据,而不需要任何处理来形成图像。
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