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公开(公告)号：WO1989002085A1
公开(公告)日：1989-03-09
申请号：PCT/US1988002370
申请日：1988-07-18
Applicant: HUGHES AIRCRAFT COMPANY
Inventor： HUGHES AIRCRAFT COMPANY , CHODOS, Steven, L. , POPE, Gordon, T. , RUE, Arthur, K.
IPC: G01S03/78
CPC classification number: G01S3/7865
Abstract: Point and area target tracking are employed by a dual mode video tracker which includes both a correlation processor (30) and a centroid processor (32) for processing incoming video signals representing the target scene (20) and for generating tracking error signals over an entire video frame. A microcomputer (26) controls the operation of the correlation and centroid processors, as well as a preprocessor (28) which preconditions the incoming video signals. The tracker operates in any of several modes in which the correlation and centroid processors function either independently or cooperatively with each other. The correlation processor generates a reference map in pixel format which is used to produce azimuth and elevation optimal weighting values for each pixel in the field-of-view. The reference map is recursively updated. The track gate for the correlation processor is automatically sized using a gradient function derived from the optimal weighting values. The gradient function is also employed along with difference video to determine correlation tracking status. The correlation and centroid tracking errors may be combined to form a composite signal defining a true complementary function.
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Patent Agency Ranking
公开(公告)号：WO1986005890A1
公开(公告)日：1986-10-09
申请号：PCT/US1986000643
申请日：1986-03-27
Applicant: HUGHES AIRCRAFT COMPANY
Inventor： HUGHES AIRCRAFT COMPANY , RUE, Arthur, K. , POPE, Gordon, T. , EMERSON, Earl, L.
IPC: G01S03/78
CPC classification number: G01S3/7864 , G01S3/7865
Abstract: Point and area target tracking are employed by a dual mode video tracker which includes both a correlation processor (30) and a centroid processor (32) for processing incoming video signals representing the target scene (20) and for generating tracking error signals over an entire video frame. A microcomputer (26) controls the operation of the correlation and centroid processors, as well as a preprocessor (28) which preconditions the incoming video signals. The tracker operates in any of several modes in which the correlation and centroid processors function either independently or cooperatively with each other. The correlation processor generates a reference map in pixel format which is used to produce azimuth and elevation optimal weighting values for each pixel in the field-of-view. The reference map is recursively updated. The track gate for the correlation processor is automatically sized using a gradient function derived from the optimal weighting values. The gradient function is also employed along with difference video to determine correlation tracking status. The correlation and centroid tracking errors may be combined to form a composite signal defining a true complementary function.
Abstract translation: 点模式和区域目标跟踪由双模式视频跟踪器采用，该双模式视频跟踪器包括相关处理器（30）和质心处理器（32），用于处理表示目标场景（20）的输入视频信号，并用于在整个图像上产生跟踪误差信号 视频帧。 微型计算机（26）控制相关和质心处理器的操作，以及预处理输入视频信号的预处理器（28）。 跟踪器以几种模式操作，其中相关性和质心处理器彼此独立地或协作地起作用。 相关处理器生成像素格式的参考地图，其用于为视场中的每个像素产生方位角和仰角最佳加权值。 参考图是递归更新的。 使用从最佳加权值导出的梯度函数自动调整相关处理器的轨道大小。 梯度函数还与差分视频一起使用以确定相关跟踪状态。 可以将相关和质心跟踪误差组合以形成定义真正互补函数的复合信号。
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公开(公告)号：EP0217871B1
公开(公告)日：1992-05-20
申请号：EP86902251.7
申请日：1986-03-27
Applicant: Hughes Aircraft Company
Inventor： RUE, Arthur, K. , POPE, Gordon, T. , EMERSON, Earl, L.
IPC: G01S3/78
CPC classification number: G01S3/7864 , G01S3/7865
Abstract: Point and area target tracking are employed by a dual mode video tracker which includes both a correlation processor (30) and a centroid processor (32) for processing incoming video signals representing the target scene (20) and for generating tracking error signals over an entire video frame. A microcomputer (26) controls the operation of the correlation and centroid processors, as well as a preprocessor (28) which preconditions the incoming video signals. The tracker operates in any of several modes in which the correlation and centroid processors function either independently or cooperatively with each other. The correlation processor generates a reference map in pixel format which is used to produce azimuth and elevation optimal weighting values for each pixel in the field-of-view. The reference map is recursively updated. The track gate for the correlation processor is automatically sized using a gradient function derived from the optimal weighting values. The gradient function is also employed along with difference video to determine correlation tracking status. The correlation and centroid tracking errors may be combined to form a composite signal defining a true complementary function.
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公开(公告)号：EP0217871A1
公开(公告)日：1987-04-15
申请号：EP86902251.0
申请日：1986-03-27
Applicant: Hughes Aircraft Company
Inventor： RUE, Arthur, K. , POPE, Gordon, T. , EMERSON, Earl, L.
CPC classification number: G01S3/7864 , G01S3/7865
Abstract: Le suivi de cibles par points et le suivi de cibles par zones sont mis en oeuvre par un dispositif vidéo de poursuite à deux modes de fonctionnement qui comporte à la fois un processeur de corrélation (30) et un processeur de point central (32) pour traiter les signaux vidéo d'entrée représentant la scène de la cible (20) et pour générer des signaux d'erreur de suivi sur une image vidéo entière. Un micro-ordinateur (26) commande le fonctionnement du processeur de corrélation et du processeur de point central, ainsi que d'un processeur (28) qui préconditionne les signaux vidéo d'entrée. Le dispositif de poursuite travaille dans n'importe quel mode de fonctionnement parmi plusieurs, dans lesquels le processeur de corrélation et le processeur de point central fonctionnent indépendamment ou de concert. Le processeur de corrélation produit une carte de référence en format pixel qui est utilisée pour déterminer des valeurs optimales de pondération d'élévation et d'azimut pour chaque pixel dans le champ de vision. La carte de référence est actualisée de manière récursive. La porte de suivi du processeur de corrélation est automatiquement étalonnée à l'aide d'une fonction de gradient dérivée des valeurs optimales de pondération. La fonction de gradient est également utilisée de concert avec les signaux vidéo différentiels pour déterminer l'état de suivi par corrélation. Les erreurs de corrélation et de suivi de point central peuvent être combinées pour former un signal composite définissant une fonction réelle complémentaire.
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公开(公告)号：EP0328621B1
公开(公告)日：1993-12-29
申请号：EP88907929.9
申请日：1988-07-18
Applicant: Hughes Aircraft Company
Inventor： CHODOS, Steven, L. , POPE, Gordon, T. , RUE, Arthur, K.
CPC classification number: G01S3/7865
Abstract: Point and area target tracking are employed by a dual mode video tracker which includes both a correlation processor (30) and a centroid processor (32) for processing incoming video signals representing the target scene (20) and for generating tracking error signals over an entire video frame. A microcomputer (26) controls the operation of the correlation and centroid processors, as well as a preprocessor (28) which preconditions the incoming video signals. The tracker operates in any of several modes in which the correlation and centroid processors function either independently or cooperatively with each other. The correlation processor generates a reference map in pixel format which is used to produce azimuth and elevation optimal weighting values for each pixel in the field-of-view. The reference map is recursively updated. The track gate for the correlation processor is automatically sized using a gradient function derived from the optimal weighting values. The gradient function is also employed along with difference video to determine correlation tracking status. The correlation and centroid tracking errors may be combined to form a composite signal defining a true complementary function.
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公开(公告)号：EP0328621A1
公开(公告)日：1989-08-23
申请号：EP88907929.0
申请日：1988-07-18
Applicant: HUGHES AIRCRAFT COMPANY
Inventor： CHODOS, Steven, L. , POPE, Gordon, T. , RUE, Arthur, K.
CPC classification number: G01S3/7865
Abstract: Point and area target tracking are employed by a dual mode video tracker which includes both a correlation processor (30) and a centroid processor (32) for processing incoming video signals representing the target scene (20) and for generating tracking error signals over an entire video frame. A microcomputer (26) controls the operation of the correlation and centroid processors, as well as a preproces sor (28) which preconditions the incoming video signals. The tracker operates in any of several modes in which the correlation and centroid processors function either independently or cooperatively with each other. The correlation processor generates a reference map in pixel format which is used to produce azimuth and elevation optimal weighting values for each pixel in the field-of-view. The reference map is recursively updated. The track gate for the correlation processor is automatically sized using a gradient function derived from the optimal weighting values. The gradient function is also employed along with difference video to determine correlation tracking status. The correlation and centroid tracking errors may be combined to form a composite signal defining a true complementary function.
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