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公开(公告)号：US6066850A
公开(公告)日：2000-05-23
申请号：US946702
申请日：1997-10-08
申请人： Charles Hersom , Zvika Afik , Allan Hollinger , Paul J. Thomas
发明人： Charles Hersom , Zvika Afik , Allan Hollinger , Paul J. Thomas
摘要： The present invention provides a method for distinguishing a boundary of an object, and the object itself, from its background. In the method electromagnetic radiation is detected from at least one field of view substantially spanning the boundary of the object and background adjacent to the boundary and superimposed or overlaid as images onto a detector. The method includes correlating spatial transitions in intensity of the overlaid images on the detector with a boundary of the object. When used for determining the attitude of a satellite with respect to the earth, the detector is a thermal infrared detector thereby providing a sharp contrast between the thermal emission of the earth and cold space. The invention provides a simple, effective method and device for determining satellite orientation and/or attitude with respect to a thermal infrared-emitting target body. The sensor includes a segmented limb-looking mirror to provide multiple fields-of-view within the field-of-regard and superimposing these fields-of-view as images onto a common detector. The required resolution can be obtained while providing a wide range of operational orbital altitudes. The attitude of the satellite can vary by a large angle from the minimal orientation while still permitting an accurate determination of attitude. Multiple channels in a modular form provide redundancy, improved accuracy, and the opportunity of providing more diverse configurations. The utilization of uncooled microbolometer arrays as imaging detectors removes the requirement for additional cooling equipment thereby providing a low cost, small size and low mass sensor with configurational flexibility and no moving parts.
摘要翻译： 本发明提供了一种用于区分对象和对象本身的边界与其背景的方法。 在该方法中，从至少一个视野基本上跨越与边界相邻的对象和背景的边界并且叠加或重叠为图像的检测器检测电磁辐射。 该方法包括将检测器上的重叠图像的强度的空间转换与对象的边界相关联。 当用于确定卫星相对于地球的姿态时，检测器是热红外探测器，从而在地球和冷空间的热发射之间形成鲜明的对比。 本发明提供了一种用于确定相对于热红外发射目标体的卫星定向和/或姿态的简单有效的方法和装置。 该传感器包括分段的肢体镜，以在观察区域内提供多个视野，并将这些视场作为图像叠加到公共检测器上。 在提供广泛的操作轨道高度时可以获得所需的分辨率。 卫星的姿态可以从最小方向变化很大的角度，同时仍能准确地确定姿态。 模块化形式的多个通道提供冗余，提高准确度，并提供更多样化配置的机会。 利用未冷却的微热辐射计阵列作为成像检测器消除了对附加冷却设备的需求，从而提供具有配置灵活性和无移动部件的低成本，小尺寸和低质量传感器。
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公开(公告)号：US5721431A
公开(公告)日：1998-02-24
申请号：US710308
申请日：1996-09-17
申请人： Charles Hersom , Zvika Afik , Allan Hollinger , Paul J. Thomas
发明人： Charles Hersom , Zvika Afik , Allan Hollinger , Paul J. Thomas
摘要： The present invention provides a method for distinguishing a boundary of an object, and the object itself, from its background. In the method electromagnetic radiation is detected from at least two fields of view substantially spanning the boundary of the object and background adjacent to the boundary and superimposed or overlaid as images onto a detector. The method includes correlating spatial transitions in intensity of the overlaid images on the detector with a boundary of the object. When used for determining the attitude of a satellite with respect to the earth, the detector is a thermal infrared detector thereby providing a sharp contrast between the thermal emission of the earth and cold space. The invention provides a simple, effective method and device for determining satellite orientation and/or attitude with respect to a thermal infrared-emitting target body. The sensor includes a segmented limb-looking mirror to provide multiple fields-of-view within the field-of-regard and superimposing these fields-of-view as images onto a common detector. The required resolution can be obtained while providing a wide range of operational orbital altitudes. Multiple channels in a modular form provide redundancy, improved accuracy, and the opportunity of providing more diverse configurations. The utilization of uncooled microbolometer arrays as imaging detectors removes the requirement for additional cooling equipment thereby providing a low cost, small size and low mass sensor with configurational flexibility.
摘要翻译： 本发明提供了一种用于区分对象和对象本身的边界与其背景的方法。 在该方法中，从至少两个视场检测到电磁辐射，其基本上跨越与边界相邻的物体和背景的边界，并作为图像叠加或重叠在检测器上。 该方法包括将检测器上的重叠图像的强度的空间转换与对象的边界相关联。 当用于确定卫星相对于地球的姿态时，检测器是热红外探测器，从而在地球和冷空间的热发射之间形成鲜明的对比。 本发明提供了一种用于确定相对于热红外发射目标体的卫星定向和/或姿态的简单有效的方法和装置。 该传感器包括分段的肢体镜，以在观察区域内提供多个视野，并将这些视场作为图像叠加到公共检测器上。 在提供广泛的操作轨道高度时可以获得所需的分辨率。 模块化形式的多个通道提供冗余，提高准确度，并提供更多样化配置的机会。 利用未冷却的微热辐射计阵列作为成像检测器消除了额外的冷却设备的需求，从而提供具有配置灵活性的低成本，小尺寸和低质量传感器。
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3.发明申请公开(公告)号：US20080044098A1
公开(公告)日：2008-02-21
申请号：US11812948
申请日：2007-06-22
申请人： Shen-En Qian , Allan Hollinger , Luc Gagnon
发明人： Shen-En Qian , Allan Hollinger , Luc Gagnon
IPC分类号： G06K9/36
CPC分类号： H04N19/94 , G01J3/2823 , H03M7/3082
摘要： The present invention relates to a real-time wideband compressor for multi-dimensional data. The compressor comprises a plurality of compression engines for simultaneously compressing a plurality of data subsets of a set of input data vectors and providing compressed data thereof using one of SAMVQ or HSOCVQ data compression. Each compression engine comprises an along spectral vectors codevector trainer as well as an across spectral bands codevector trainer. The compression engines are programmable to perform either along spectral vectors codevector training or across spectral bands codevector training in combination with one of the SAMVQ or HSOCVQ techniques without changing hardware. The compressor further comprises a network switch for partitioning the set of input data vectors into the plurality of data subsets, for providing each of the plurality of data subsets to one of the plurality of compression engines, and for transmitting the compressed data. The real-time wideband compressor is highly advantageous in, for example, space applications by programmable enabling performance of different techniques of codevector training as well as different techniques of VQ. Furthermore, after the compression process is started the compression process is performed autonomously without external communication.
摘要翻译： 本发明涉及用于多维数据的实时宽带压缩器。 压缩机包括多个压缩引擎，用于同时压缩一组输入数据向量的多个数据子集，并使用SAMVQ或HSOCVQ数据压缩之一提供其压缩数据。 每个压缩引擎包括沿着频谱矢量码矢量训练器以及跨频谱带码矢量训练器。 压缩引擎可编程为可以在不改变硬件的情况下，沿着频谱矢量码矢量训练或跨频谱频带编码矢量训练与SAMVQ或HSOCVQ技术中的一种进行组合。 该压缩器还包括网络交换机，用于将该组输入数据向量划分成多个数据子集，用于将多个数据子集中的每一个提供给多个压缩引擎中的一个，并用于发送压缩数据。 实时宽带压缩器在例如空间应用中通过可编程实现不同技术的码向量训练以及不同的VQ技术是非常有利的。 此外，在压缩处理开始之后，压缩处理在没有外部通信的情况下自主地执行。
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4.发明申请Data compression engines and real-time wideband compressor for multi-dimensional data 失效数据压缩引擎和实时宽带压缩器用于多维数据公开(公告)号：US20050047670A1
公开(公告)日：2005-03-03
申请号：US10651110
申请日：2003-08-29
申请人： Shen-En Qian , Allan Hollinger , Luc Gagnon
发明人： Shen-En Qian , Allan Hollinger , Luc Gagnon
CPC分类号： H04N19/94 , G01J3/2823 , H03M7/3082
摘要： The present invention relates to a real-time wideband compressor for multi-dimensional data. The compressor comprises a plurality of compression engines for simultaneously compressing a plurality of data subsets of a set of input data vectors and providing compressed data thereof using one of SAMVQ or HSOCVQ data compression. Each compression engine comprises an along spectral vectors codevector trainer as well as an across spectral bands codevector trainer. The compression engines are programmable to perform either along spectral vectors codevector training or across spectral bands codevector training in combination with one of the SAMVQ or HSOCVQ techniques without changing hardware. The compressor further comprises a network switch for partitioning the set of input data vectors into the plurality of data subsets, for providing each of the plurality of data subsets to one of the plurality of compression engines, and for transmitting the compressed data. The real-time wideband compressor is highly advantageous in, for example, space applications by programmable enabling performance of different techniques of codevector training as well as different techniques of VQ. Furthermore, after the compression process is started the compression process is performed autonomously without external communication.
摘要翻译： 本发明涉及用于多维数据的实时宽带压缩器。 压缩机包括多个压缩引擎，用于同时压缩一组输入数据向量的多个数据子集，并使用SAMVQ或HSOCVQ数据压缩之一提供其压缩数据。 每个压缩引擎包括沿着频谱矢量码矢量训练器以及跨频谱带码矢量训练器。 压缩引擎可编程为可以在不改变硬件的情况下，沿着频谱矢量码矢量训练或跨频谱频带编码矢量训练与SAMVQ或HSOCVQ技术中的一种进行组合。 该压缩器还包括网络交换机，用于将该组输入数据向量划分成多个数据子集，用于将多个数据子集中的每一个提供给多个压缩引擎中的一个，并用于发送压缩数据。 实时宽带压缩器在例如空间应用中通过可编程实现不同技术的码向量训练以及不同的VQ技术是非常有利的。 此外，在压缩处理开始之后，压缩处理在没有外部通信的情况下自主地执行。
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公开(公告)号：US20050002584A1
公开(公告)日：2005-01-06
申请号：US10611897
申请日：2003-07-03
申请人： Shen-En Qian , Allan Hollinger
发明人： Shen-En Qian , Allan Hollinger
CPC分类号： G06T9/008
摘要： The present invention relates to a method and system for compressing a continuous data flow in real-time based on lossy compression. In real-time data compression, a series of multi-dimensional data subsets acquired in a given period of time are treated as a regional data cube for the purpose of dividing a continuous series of data subsets into a plurality of data cubes. In a first embodiment implementation of parallel processing using a plurality of compression engines is facilitated by separating a data cube into a plurality of clusters comprising similar spectral vectors. By separating the data cube into clusters of similar spectral vectors no artificial spatial boundaries are introduced substantially improving image quality. Furthermore, the spectral vectors within a cluster are more easily compressed due to their similarity. In a second embodiment a predetermined number of 2D focal plane frames in a boundary area of a previous regional data cube close to a current regional data cube are included in a training set used for codevector training for the current region. Therefore, no artificial boundary occurs between the two adjacent regions when codevectors trained in this way are used for codebook generation and encoding of the spectral vectors of the current regional data cube substantially reducing image artifacts between adjacent regions. A remedy for the single bit error problem is provided in a third embodiment. Full redundancy of compressed data for a regional data cube is obtained by combining the previous regional data cube and the current regional data cube for codebook training. In order to obtain redundancy for the index map, the codebook is used to encode the current regional data cube as well as the previous regional data cube producing a baseline index map for the current regional data cube and a redundant index map for the previous regional data cube. Therefore, full redundancy for a regional data cube is provided allowing restoration of a regional data cube if its codebook and/or index map are corrupted or lost due to single bit errors.
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