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    • 17. 发明授权
    • Aberration measuring method
    • 畸变测量方法
    • US4641962A
    • 1987-02-10
    • US496208
    • 1983-05-19
    • Tetsuo SuedaMinoru Yoshii
    • Tetsuo SuedaMinoru Yoshii
    • G01M11/02G01B9/00
    • G01M11/0264
    • In aberration measurement, a light beam from a light source provided at the image plane position of a lens to be examined is caused to enter the lens to be examined, the light beam passed through the lens to be examined, is separated into a plurality of light rays in a plane perpendicular to a principal ray or in a plane perpendicular to the optical axis of the lens to be examined, and the position of each light beam is detected at a position which is spaced apart from a position optically conjugate with said image plane position with respect to the lens to be examined and at which the plurality of light rays can be separated from one another.
    • 在像差测量中,使来自设在被检查透镜的像面位置处的来自光源的光束进入待检查的透镜,通过待检查的透镜的光束被分离成多个 在垂直于主光线的垂直于待检查透镜的光轴的平面中的光线和每个光束的位置在与与所述图像光学共轭的位置间隔开的位置处被检测 相对于待检查的镜片的平面位置,并且多个光线可以彼此分离。
    • 18. 发明授权
    • Image processing apparatus
    • 图像处理装置
    • US4833721A
    • 1989-05-23
    • US157147
    • 1988-02-11
    • Masatoshi OkutomiTetsuo SuedaMitsuhiro Tokuhara
    • Masatoshi OkutomiTetsuo SuedaMitsuhiro Tokuhara
    • G06K9/48G06K9/64
    • G06K9/6206G06K9/481
    • An image processing apparatus comprises a detector which includes an image reading section of a digital copier and which chases outline information of an image pattern in a predetermined direction and thereby extracts outline points; an arithmetic operating circuit to respectively obtain outline tangential directions on the basis of the outline points; an extracting circuit to select a predetermined number of extraction points from the outline points; a coding circuit to sequentially obtain direction differences in the outline tangential directions on the basis of the extraction points and to code the direction differences; and a recognizing circuit to perform a non-linear matching between a code sequence coded by the coding circuit and a reference code sequence, thereby recognizing the image pattern. The coding circuit calculates the outline tangential directions using predetermined direction codes. With this apparatus, an image pattern can be stably and accurately recognized at high speed without being influenced by positional deviation, rotation, change in size, or the like of the image pattern.
    • 一种图像处理装置,包括检测器,其包括数字复印机的图像读取部分,并且沿预定方向追赶图像图案的轮廓信息,从而提取轮廓点; 算术运算电路,分别基于轮廓点获得轮廓切线方向; 提取电路,用于从轮廓点选择预定数量的提取点; 编码电路,根据提取点顺序地获得轮廓切线方向的方向差,并对方向差进行编码; 以及识别电路,用于执行由编码电路编码的码序列与参考码序列之间的非线性匹配,从而识别图像图案。 编码电路使用预定方向代码来计算轮廓切线方向。 利用该装置,可以在不受图像图案的位置偏离,旋转,尺寸变化等的影响的情况下高速稳定且准确地识别图像图案。