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    • 2. 发明授权
    • Image recognition apparatus
    • 图像识别装置
    • US4955060A
    • 1990-09-04
    • US69310
    • 1987-07-02
    • Kazuo KatsukiNorman A. PeppersJames R. YoungGerald A. PierceHisami Nishi
    • Kazuo KatsukiNorman A. PeppersJames R. YoungGerald A. PierceHisami Nishi
    • G02F3/00G06K9/82G06T7/00
    • G06K9/82
    • In an image recognition apparatus for identifying an input image such as a character, any other graphic pattern or the like by comparing the input image with a plurality of reference image, an optical image recognition means simultaneously performs image information detection processing of a plurality of optical pattern images of substantially an identical shape obtained by multiplying the input image, thereby detecting a plurality of image information data corresponding to the plurality of optical pattern images and hence identifies the input image. When the input image cannot be identified by the optical image recognition means, an electronic image recognition means performs digital correlation calculations for limited ones of the reference images according to the above image information data. Therefore, image recognition can be performed by an inexpensive apparatus at high speed, and a high throughput can be obtained. In addition, a high recognition rate can be obtained.
    • 在通过将输入图像与多个参考图像进行比较来识别诸如字符,任何其它图形等的输入图像的图像识别装置中,光学图像识别装置同时执行多个光学的图像信息检测处理 通过对输入图像进行乘法获得的基本上相同形状的图案图像,从而检测与多个光学图案图像相对应的多个图像信息数据,从而识别输入图像。 当输入图像不能被光学图像识别装置识别时,电子图像识别装置根据上述图像信息数据对有限的参考图像执行数字相关计算。 因此,可以通过廉价的装置高速执行图像识别,并且可以获得高的吞吐量。 另外,可以获得高识别率。
    • 3. 发明授权
    • Image correlation calculation apparatus
    • 图像相关计算装置
    • US5063602A
    • 1991-11-05
    • US679161
    • 1991-03-26
    • Norman A. PeppersJames R. YoungGerald A. PierceHisami Nishi
    • Norman A. PeppersJames R. YoungGerald A. PierceHisami Nishi
    • G06K9/74
    • G06K9/74
    • In an image correlation calculation apparatus for optically calculating correlations between reference patterns and an image such as a character or any other figure, the image such as the character or any other figure subjected to correlation calculations is optically multiplied by a multiplier to form simultaneously in parallel a plurality of optical pattern images of a substantially identical shape, and optical correlation calculation between the plurality of optical pattern images and the reference patterns formed on various types of reference masks is performed individually and instantaneously, the various type of reference masks being arranged at a position spaced apart by a predetermined distance from the plurality of optical pattern image, thereby detecting beams emitted through the various types of reference masks. Image multiplication, optical correlation calculation, and transmission of the result of the optical correlation calculation to the photosensors can be simultaneously performed at a light propagation time. The apparatus structure can be simplified at low cost, and image correlation operations can be performed at high speed.
    • 在用于光学计算参考图案和诸如字符或任何其他图形的图像之间的相关性的图像相关计算装置中,将经过相关计算的诸如字符或任何其他图形的图像光学地乘以乘法器并行同时形成 基本上相同形状的多个光学图案图像和多个光学图案图像与形成在各种类型的参考掩模上的参考图案之间的光学相关计算被单独和瞬时地执行,各种类型的参考掩模被布置在 位置与多个光学图案图像隔开预定距离,从而检测通过各种类型的参考掩模发射的光束。 可以在光传播时间同时进行图像乘法,光学相关计算和光学相关计算的结果的传输到光传感器。 可以以低成本简化装置结构,并且可以高速执行图像相关操作。
    • 7. 发明授权
    • Multi-dimensional laser Doppler velocimeter
    • 多维激光多普勒测速仪
    • US4990791A
    • 1991-02-05
    • US435086
    • 1989-11-13
    • Hisami Nishi
    • Hisami Nishi
    • G01S17/58G01H9/00G01P3/36G01S17/50
    • G01S17/50G01H9/00G01P3/366
    • A reference beam type optical laser Doppler velocimeter for emitting two or more probe beams to an object to be measured at a predetermined angle to multi-dimensionally measure a velocity and/or a displacement vector of the object due to Doppler shifts of beams reflected by the object. This velocimeter includes a frequency shifting means for dividing a laser beam from a single light source into two or more beams, and shifting optical frequencies of the beams each by a predetermined shift amount, a photodetecting means for receiving the reflected and reference beams to obtain a detection current, and a bandpass filter for causing the detection current to pass therethrough to obtain a required signal.
    • 一种参考光束型光学激光多普勒测速仪,用于以预定角度将两个或更多个探测光束发射到待测量的物体,以便多维地测量由于所述光束反射的光束的多普勒偏移而导致的物体的速度和/或位移矢量 目的。 该速度计包括用于将来自单个光源的激光束分成两个或更多个光束并将每个光束的光频率偏移预定偏移量的频移装置,用于接收反射和参考光束的光检测装置,以获得 检测电流和用于使检测电流通过的带通滤波器以获得所需信号。
    • 8. 发明授权
    • Graded-index lens
    • 渐变折射率镜头
    • US5109298A
    • 1992-04-28
    • US585687
    • 1990-09-20
    • Hisami Nishi
    • Hisami Nishi
    • G02B9/00G02B3/00G02B27/18
    • G02B3/0056G02B3/0087
    • A graded-index lens for focusing an erect unmagnified image out of the lens has a refractive index varying radially in a cross-sectional plane normal to the optical axis thereof. The graded-index lens comprises a cylindrical medium whose refractive index at a radial distance r from an optical axis within a cross-sectional plane normal to the optical axis, is expressed by:n.sup.2 (r)=n.sub.0.sup.2 [1-(gr).sup.2 +h.sub.4 (gr).sup.4 ]where n.sub.0 is the refractive index on the optical axis, g is a parameter indicating the gradient of the varying refractive index, and h.sub.4 is a fourth-order refractive index distribution coefficient, the fourth-order refractive index distribution coefficient h.sub.4 being in the range of:0.6
    • 用于将直立的非放大图像聚焦在透镜之外的渐变折射率透镜具有在垂直于其光轴的横截面中的径向变化的折射率。 渐变折射率透镜包括圆柱形介质,其折射率在与光轴垂直的横截面内的光轴的径向距离r处由下式表示:n2(r)= n02 [1-(gr)2 + h4(gr)4]其中n0是光轴上的折射率,g是表示变化的折射率的梯度的参数,h4是四阶折射率分布系数,四阶折射率分布 系数h4在0.6

    • 10. 发明授权
    • Method for collating independent figure elements between images
    • 在图像之间收集独立图形元素的方法
    • US5206917A
    • 1993-04-27
    • US683557
    • 1991-04-10
    • Hiroshi UenoHisami Nishi
    • Hiroshi UenoHisami Nishi
    • G06T7/00
    • G06K9/3216G06T7/0044
    • A method for collating independent figure elements in an object image with a reference image both including independent elements which are not interlinked with each other. The method comprises steps of defining a relative coordinate system in an image plane for the reference image and the object image on the basis of centers of gravity of two distinctive independent elements which are identified with values indicative of features of the elements; and collating pairs of independent elements between the reference image and the object image on the basis of the relative coordinate system.
    • 对象图像(11)中的独立图形元素(12,13)与参考图像相关(图3)。 两个图像包括彼此不相互连接的独立元件(12,13,22,23)。 该方法包括基于两个独特独立元件(12,12)的重心来定义用于参考图像(图3)和对象图像(11)的图像平面中的相对坐标系(X min,Y min) 13),其用表示元素的周长和面积的特征的值来标识; 并且基于相对坐标系(X min,Y min)对照参考图像和对象图像之间的独立元素对。 目标图像(11)最初形成在摄像机的视场中,独立的图形元素(诸如12,13)由此位于摄像机视场的坐标系(X,Y)中,以及 因此不一定在系统(X,Y)中与存储的参考图像的相应独立图形元素相同的位置。