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    • 1. 发明授权
    • Television antenna directing and tracking system for television program
network between air-borne and ground offices
    • 空中和地面办公室电视节目网络的电视天线定向跟踪系统
    • US4047175A
    • 1977-09-06
    • US663529
    • 1976-03-03
    • Hideya TairaKuniaki Shimizu
    • Hideya TairaKuniaki Shimizu
    • G01S3/42G01S3/04
    • G01S3/42
    • This invention relates to a television antenna directing and tracking system for directing a television repeating or relaying antenna mounted on an aircraft toward a ground station. The air-borne office is provided with a coordinate transforming device for transforming the azimuth angle .phi..sub.A (t) and the elevation angle .theta..sub.A (t) which represent the direction of the aircraft with respect to the longitude and latitude of the globe or the globe coordinate into the azimuth angle .phi..sub.B (t) and the elevation angle .theta..sub.B (t) at the air-borne coordinate. The ground office is equipped with receiving means and tracking means and the air-borne office receives command signals regarding the azimuth angle .phi..sub.A (t) and the elevation angle .theta..sub.A (t) from the ground office. Further, the air-borne office is equipped with means for computing by itself the azimuth angle .phi..sub.A (t) and the elevation angle .theta..sub.A (t) based on the flight informations without the aid of the ground office.
    • 本发明涉及一种用于将安装在飞机上的电视重复或中继天线指向地面站的电视天线引导和跟踪系统。 空中办公室设有一个坐标转换装置,用于转换代表飞机相对于地球的经度和纬度的方位角θ(t)和仰角θA(t),或者 地球坐标转换为方位角phi B(t)和空中坐标上的仰角θB(t)。 地面办公室装有接收装置和跟踪装置,空中办公室从地面办公室接收关于方位角phi A(t)和仰角θA(t)的指令信号。 此外,空中办公室配备有无需借助于地面办公室的方式,根据飞行情报自己计算方位角度ΦA(t)和仰角θA(t)。
    • 5. 发明授权
    • Method of constructing three-dimensional image according to central
projection method and apparatus for same
    • 根据中心投影方法和装置构建三维图像的方法
    • US5953013A
    • 1999-09-14
    • US856675
    • 1997-04-29
    • Kuniaki Shimizu
    • Kuniaki Shimizu
    • G06T11/00G06T15/20G06T17/00
    • G06T15/20G06T11/006
    • A method of constructing a three-dimensional image according to a central projection method, in which after a view point, tomographic images and a projection plane are set so that the tomographic images are put between the view point and the projection plane, a projection image is obtained by a central projection method, so that the pixel value of a projection point is determined in accordance with the distance between the view point and each of the tomographic images. Further, the view point is moved in combination with the projection plane successively in the direction of the depth of the tomographic images, so that a three-dimensional image is constructed and displayed whenever the position of the view point is changed. Further, after a tomographic image is projected onto a curved surface which touches the projection plane at the center of the projection plane at which a perpendicular drawn from the view point to the projection plane intersects the projection plane, the image projected onto the curved surface is re-projected onto the projection plane with a length along the curved surface to obtain a projection image.
    • 根据中心投影方法构建三维图像的方法,其中在观察点之后设置断层图像和投影平面以使断层图像放置在视点和投影平面之间,投影图像 通过中心投影法获得,使得根据视点与每个断层图像之间的距离来确定投影点的像素值。 此外,视点相对于投影平面在断层图像的深度方向上连续地移动,从而每当视点的位置改变时构建和显示三维图像。 此外,在将断层图像投影到与从投影平面的视点相对的投影面垂直的投影面的中心与投影面接触的曲面上,投影到曲面上的图像为 重新投影到沿着曲面的长度的投影平面上以获得投影图像。