公开(公告)号：US20040008890A1

公开(公告)日：2004-01-15

申请号：US10193544

申请日：2002-07-10

申请人： Northrop Grumman Corporation

发明人： Walter D. Clark ,  Richard L. Hoffman

IPC分类号： G06K009/48

CPC分类号： G06K9/48 ,  G06T7/12 ,  G06T7/181 ,  G06T2207/10016 ,  G06T2207/10048 ,  G06T2207/20132 ,  G06T2207/30212

摘要： The present invention includes a method for analyzing an image to screen for target candidates wherein an edge-follower detects straight segments within a plurality of longer edges and detects also from the longer edges, contours that go around areas that are the right size. The invention also contemplates starting the edge-follower from seeds on the image and terminating the edge-following process if the edge meanders too much to ever become an acceptable contour. In accordance with another embodiment, the straight segments can be further screened by measuring the gradient direction and then noting the deviation from the mean of those direction values. The highly straight edges thus found, in confluence with each other, or near a correct size contour define likely candidates.

摘要翻译： 本发明包括一种用于分析图像以筛选目标候选的方法，其中边缘跟随器检测多个较长边缘内的直线段并且还从较长边缘检测围绕正确尺寸的区域的轮廓。 本发明还考虑从图像上的种子启动边缘跟随器，并且如果边缘曲折太多以致永远不会成为可接受的轮廓，则终止边缘跟随过程。 根据另一个实施例，可以通过测量梯度方向然后注意到与这些方向值的平均值的偏差来进一步筛选直线段。 因此，如此发现的高度直线的边缘彼此汇合或者靠近正确的大小轮廓确定了可能的候选者。

公开(公告)号：US20030034421A1

公开(公告)日：2003-02-20

申请号：US09930339

申请日：2001-08-14

申请人： Northrop Grumman Corporation

发明人： Walter D. Clark

IPC分类号： B64C005/00 ,  B64C009/00 ,  B64C013/00

CPC分类号： B64C9/12 ,  B64C39/10 ,  G05D1/0841 ,  Y02T50/12 ,  Y02T50/32

摘要： A system for controlling an aircraft includes an airframe, a first airfoil, and a second airfoil. At least a portion of the first airfoil and the second airfoil are controllably deflectable so that, during a roll maneuver, the first airfoil generates increased lift and a consequent increased drag, and the second airfoil generates negative lift and a consequent increased drag, the increased lift and the decreased lift generating a roll moment, and the increased drag of the second airfoil producing a yaw moment that counteracts the yaw moment produced by the increased drag of the first airfoil such that no substantial change in aircraft yaw moment occurs. The drag on the down-going wing may counteract the drag on the up-going wing by having a reduced area providing the down-going force so that it has to deflect to the point that it is producing not only less, but actually negative lift.

公开(公告)号：US20040245379A1

公开(公告)日：2004-12-09

申请号：US10456176

申请日：2003-06-06

申请人： Northrop Grumman Corporation

发明人： Walter D. Clark

IPC分类号： B64C001/00

CPC分类号： B64C1/0009 ,  B64C5/08 ,  B64C9/12 ,  B64C9/32 ,  B64C9/323 ,  B64C9/34 ,  B64C39/024 ,  B64C2001/0045 ,  B64C2039/105 ,  B64C2201/028 ,  B64C2201/127 ,  B64C2201/22 ,  Y02T50/12 ,  Y02T50/32 ,  Y02T50/44

摘要： An aircraft with swept back wings and spoilers inlaid into the top surface near the tips of the wings. The aircraft also includes an elevator formed in the center back portion of the aircraft, which is also aft of the spoilers. It is aft to allow an auxiliary control in the elevator signal to cancel the unwanted pitch up moment caused by the spoilers only going up and being aft of the center of gravity of the aircraft. Roll is achieved with these spoilers by the direct action of the lift dumping on one side or the other and by taking advantage of the transformation of yaw into roll by the sweep back of the wings.

摘要翻译： 一架飞机将翅膀和扰流板扫到靠近机翼尖端的顶面。 飞机还包括形成在飞行器的中心后部的电梯，其也是扰流板的后部。 这是为了允许电梯信号中的辅助控制来消除由扰流板仅上升并且处于飞机重心的后方引起的不期望的俯仰上升时刻。 通过电梯倾倒在一侧或另一侧上的直接作用，并且通过翼的扫掠利用偏转转动的优点，利用这些扰流板实现滚动。

公开(公告)号：US20040071346A1

公开(公告)日：2004-04-15

申请号：US10193019

申请日：2002-07-10

申请人： Northrop Grumman Corporation

发明人： Walter D. Clark ,  Richard R. Ramroth

IPC分类号： G06K009/62 ,  G06K009/00

CPC分类号： G06K9/3241 ,  G06K9/48

摘要： The present invention includes a method for matching a stored template with an image of an object. This is a final stage identification device in the at least one candidate array is received from a prescreener and/or intermediate discriminator. The candidate array includes a respective plurality of direction values at least partially defining a respective contour of an object within a two-dimensional image containing a possible target. The candidate array is compared with at least one stored template array. The stored template array includes a respective plurality of direction values at least partially defining an outline of a predetermined object of interest. The template array may include a plurality of template segment arrays such that various portions of the overall template are compared one at a time with the entire candidate array. The match between candidate and stored template may be scored based upon how well the template segments correspond to the candidate. Furthermore, the candidate may also be scored based upon a positional relationship between the template segments, while they are aligned with respective portions of the candidate.

摘要翻译： 本发明包括用于将存储的模板与对象的图像进行匹配的方法。 这是从预处理器和/或中间鉴别器接收至少一个候选阵列中的最后阶段识别装置。 候选阵列包括相应的多个方向值，其至少部分地限定包含可能目标的二维图像内的对象的相应轮廓。 将候选阵列与至少一个存储的模板阵列进行比较。 存储的模板阵列包括相应的多个方向值，至少部分地限定预定的感兴趣对象的轮廓。 模板阵列可以包括多个模板段阵列，使得整个模板的各个部分一次一个地与整个候选阵列进行比较。 基于模板片段与候选者对应的多少，可以对候选和存储的模板之间的匹配进行评分。 此外，还可以基于模板段之间的位置关系对候选者进行评分，同时它们与候选者的各个部分对齐。