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    • 12. 发明公开
    • Optical pattern recognition apparatus
    • OptischesMustererkennungsgerät。
    • EP0475659A2
    • 1992-03-18
    • EP91308052.9
    • 1991-09-03
    • SEIKO INSTRUMENTS INC.
    • Mitsuoka, YasuyukiIwaki, TadaoYoshikawa, Tomohiro
    • G06K9/74
    • G06K9/748G06E3/005
    • The present invention provides optical pattern recognition apparatus comprising means for generating a coherent image of a joint input image (3) including a plurality of reference images R i and a signal image S by applying a coherent light beam (1) to the joint input image. Fourier transform means (4) are provided for transforming the coherent image into a joint Fourier transform image, which is then converted by a spatial light modulator (5) into a light intensity distribution. Means (8, 9) are also provided for determining a correlation coefficient between each of the reference images and the signal image based on the light intensity distribution. Feed-back means (2, 11) respond to an output from the correlation coefficient determining means for adjusting the intensity of light applied to the joint input image for generating the coherent image.
    • 本发明提供光学图案识别装置,其包括用于通过将相干光束(1)施加到关节输入图像来生成包括多个参考图像Ri和信号图像S的联合输入图像(3)的相干图像的装置。 提供傅立叶变换装置(4),用于将相干图像变换成联合傅里叶变换图像,然后将其由空间光调制器(5)转换成光强度分布。 还提供了用于基于光强度分布来确定每个参考图像和信号图像之间的相关系数的装置(8,9)。 反馈装置(2,11)响应来自相关系数确定装置的输出,用于调整施加到联合输入图像的光的强度以产生相干图像。
    • 14. 发明公开
    • Recording apparatus
    • 在Nahfeld - Aufzeichnungs- und Wiedergabe-Gerät的Kontrolle des Abstands
    • EP1939871A1
    • 2008-07-02
    • EP08075135.7
    • 1999-03-12
    • Seiko Instruments Inc.
    • Kasama, NobuyukiMitsuoka, YasuyukiOumi, ManabuKato, KenjiNiwa, TakashiNakajima, KunioChiba, Norio
    • G11B7/135G11B7/09
    • G11B7/0908B82Y10/00G11B7/127G11B7/1275G11B7/1387Y10S977/862Y10S977/947
    • The invention concerns a recording apparatus for reproducing information recorded on a recording medium by utilising near-field light. The recording apparatus comprises: an aperture element having a microscopic aperture to scatter near-field light; a light illuminating means for introducing illumination light to the recording medium such that near-field light is created on a surface of the recording medium, the illumination light comprising two different modulation frequencies; a first light detecting means for detecting first propagation light caused by the microscopic aperture scattering the near-field light having one of the two modulation frequencies, and for converting the detected first propagation light into a reproduced signal; a second light detecting means for detecting second propagation light caused by the microscopic aperture scattering the near-field light having the other of the two modulation frequencies, and for converting the detected second propagation light into a control signal; and a control means for controlling a spacing between the aperture element and the recording medium based on the control signal.
    • 本发明涉及用于通过利用近场光来再现记录在记录介质上的信息的记录装置。 记录装置包括:具有微观孔径以散射近场光的孔径元件; 照明装置,用于将照明光引入记录介质,使得在记录介质的表面上产生近场光,所述照明光包括两个不同的调制频率; 第一光检测装置,用于检测由微小孔散射引起的具有两个调制频率之一的近场光的第一传播光,并将检测到的第一传播光转换成再现信号; 第二光检测装置,用于检测由微小孔径散射具有两个调制频率中的另一个的近场光引起的第二传播光,并将检测到的第二传播光转换成控制信号; 以及控制装置,用于根据控制信号控制孔径元件和记录介质之间的间隔。
    • 20. 发明公开
    • An optical pattern recognition apparatus with coordinate conversion function
    • 具有坐标转换功能的光学图案识别装置
    • EP0516106A3
    • 1994-01-12
    • EP92108985.0
    • 1992-05-27
    • SEIKO INSTRUMENTS INC.SUMITOMO CEMENT CO. LTD.
    • Mitsuoka, YasuyukiIwaki, Tadao
    • G06K9/74
    • G06K9/748G06E3/005
    • This invention is intended to enable accurate and high-speed pattern recognition even when an object to be identified changes its size, rotating angle or position. The invention comprises:
         an optical coordinate convertor for displaying at least one reference image including specified marks and at least one input image to be entered on an electrically addressed spatial light modulator 3 for object image and then converting the displayed images from one coordinate system to a desired coordinate system to produce coordinate-converted images by using the coordinate conversion optical filter array 44 and the coordinate conversion lens array 47 ; and
         a joint transform correlator for displaying the coordinate-converted intensity distribution images, produced by the optical coordinate convertor, on the coordinate conversion light-addressed spatial light modulator 13 , Fourier-transforming the coordinate-converted intensity distribution images into Fourier-transformed intensity distribution images, displaying the Fourier-transformed intensity distribution images on the Fourier transform light-addressed spatial light modulator 105 , and Fourier-transforming again the Fourier-transformed intensity distribution image to determine the correlation coefficients of the coordinate-converted reference image and the coordinate-converted input image. With this construction, it is possible to change the reference image and the kind of coordinate conversion easily and quickly.
    • 即使当待识别的物体改变其尺寸,旋转角度或位置时,本发明也能够实现准确且高速的模式识别。 本发明包括:光学坐标转换器,用于显示包括指定标记的至少一个参考图像和要被输入到用于目标图像的电寻址空间光调制器3上的至少一个输入图像,然后将显示的图像从一个坐标系转换为 通过使用坐标转换光学滤波器阵列44和坐标转换透镜阵列47来产生坐标转换图像的期望坐标系; 以及联合变换相关器,用于在坐标变换光寻址空间光调制器13上显示由光学坐标变换器产生的坐标变换后的强度分布图像,将坐标变换后的强度分布图像傅立叶变换为傅立叶变换后的强度分布 在付里叶变换光寻址空间光调制器105上显示经傅里叶变换的强度分布图像,并再次傅立叶变换经傅里叶变换的强度分布图像,以确定经坐标转换的参考图像和坐标转换后的参考图像的相关系数, 转换的输入图像。 利用这种结构,可以方便快捷地改变参考图像和坐标转换的类型。