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    Spectral characteristic acquisition device and spectral characteristic acquisition method, image evaluation device, and image formation device
    291.
    发明专利
    Spectral characteristic acquisition device and spectral characteristic acquisition method, image evaluation device, and image formation device 有权
    光谱特征获取装置和光谱特征采集方法，图像评估装置和图像形成装置

    公开(公告)号：JP2013061174A

    公开(公告)日：2013-04-04

    申请号：JP2011198374

    申请日：2011-09-12

    Applicant: Ricoh Co Ltd ,  株式会社リコー

    Inventor： SHINPO KOHEI ,  KAMIJO TADAHIRO ,  KUBOTA YOICHI ,  SEO MANABU

    IPC: G01J3/36 ,  B41J2/525 ,  B41J29/46 ,  G01J3/50 ,  G01N21/27 ,  G03G15/00 ,  G03G21/00

    CPC classification number: G01J3/524 ,  B41F33/00 ,  B41F33/0045 ,  G01J3/04 ,  G01J3/28 ,  G01J3/502 ,  G01N21/86 ,  H04N1/6033 ,  H04N1/6044

    Abstract: PROBLEM TO BE SOLVED: To provide a spectral characteristic acquisition device capable of obtaining spectral characteristics of plural positions with appropriate spatial resolution according to a measuring object.SOLUTION: In a spectral characteristic acquisition device, an opening array having plural openings divides reflectance of light applied from light application means 11 to an image carrier medium 90 into plural regions, spectroscopic means 15 forms plural diffraction images corresponding to the plural openings, light-receiving means 16 receives the plural diffraction images at plural pixels to convert to an electrical signal, and arithmetic means 17 operates spectral characteristics indicating light volume proportion of reflectance in plural location of the image carrier medium. The arithmetic means includes transformation matrix storage means 17a for storing transformation matrix for calculating spectral characteristics corresponding to an electrical signal of a pieces (a represents a natural number equal to or larger than 2) of neighboring diffraction images; and the spectral characteristic calculation means 17b for calculating, from the electrical signal of the a pieces of neighboring diffraction images and the corresponding transformation matrix, the spectral characteristics of the a pieces of neighboring diffraction images at a location of the image carrier medium corresponding to the opening.

    Abstract translation: 解决的问题：提供能够根据测量对象以适当的空间分辨率获得多个位置的光谱特性的光谱特征获取装置。 解决方案：在光谱特征获取装置中，具有多个开口的开口阵列将从光施加装置11施加到光载体介质90的光的反射率分成多个区域，分光装置15形成对应于多个开口的多个衍射图像 光接收装置16接收多个像素处的多个衍射图像以转换为电信号，并且运算装置17操作指示图像载体介质的多个位置的反射率的光体积比例的光谱特性。 算术装置包括变换矩阵存储装置17a，用于存储用于计算对应于相邻衍射图像的片段的电信号（a表示等于或大于2的自然数）的光谱特性的变换矩阵; 以及光谱特性计算装置17b，用于根据相邻的衍射图像的电信号和相应的变换矩阵，计算出与相应的衍射图像对应的图像载体介质的位置处的一条相邻衍射图像的光谱特性 开放 版权所有（C）2013，JPO＆INPIT

    Image processor, image reader and image forming apparatus
    293.
    发明专利
    Image processor, image reader and image forming apparatus 有权
    图像处理器，图像读取器和图像形成装置

    公开(公告)号：JP2008141341A

    公开(公告)日：2008-06-19

    申请号：JP2006323789

    申请日：2006-11-30

    Applicant: Fuji Xerox Co Ltd ,  富士ゼロックス株式会社

    Inventor： NAKAYA FUMIO ,  ICHIKAWA YUICHI

    IPC: H04N1/028 ,  G06T1/00 ,  H04N1/04 ,  H04N1/46 ,  H04N1/60

    CPC classification number: G01J3/46 ,  G01J3/462 ,  G01J3/502 ,  G01J3/51 ,  H04N1/486 ,  H04N1/603

    Abstract: PROBLEM TO BE SOLVED: To form an image which faithfully reproduces a subject to be picked up while reducing the amount of data of spectral reflectance.
    SOLUTION: In an image forming apparatus, spectral reflectance is calculated in a wavelength region ranging 380 to 780 mm to be a visible light region and represented as a spectral reflectance estimation function by a linear combination of a specific vector and a coefficient with respect to the specific vector, and processing such as image forming processing is performed on the basis of the spectral reflectance estimation function in a middle wavelength region ranging 400 to 700 mm excluding a low wavelength region ranging 380 to 400 mm and a high wavelength region ranging from 700 to 780 mm. Values of stimulus values x(λ), y(λ), and z(λ) are distributed all over the visible light region and a ratio by which these contribute to the low wavelength region and high wavelength region is very small. Therefore, when a spectral reflectance estimation function is obtained with respect to all over the visible light region, a difference between the spectral reflectance estimation function in the middle wavelength region to be actually used for processing and an original spectral reflectance of the subject can be made smaller.
    COPYRIGHT: (C)2008,JPO&INPIT

    Abstract translation: 要解决的问题：在减少光谱反射率的数据量的同时形成忠实地再现要拾取的对象的图像。 解决方案：在图像形成装置中，在380〜780mm范围内的波长范围内计算出光谱反射率为可见光区域，并通过特定向量与系数的线性组合表示为光谱反射率估计函数 根据特定矢量进行处理，并且基于除了380-400mm的低波长区域和范围为380-400mm的低波长区域的范围为400至700mm的中间波长区域中的光谱反射率估计功能进行诸如图像形成处理的处理， 从700到780毫米。 刺激值x（λ），y（λ）和z（λ）的值分布在整个可见光区域，并且这些对低波长区域和高波长区域贡献的比例非常小。 因此，当在可见光区域中获得光谱反射率估计函数时，可以使实际用于处理的中间波长区域中的光谱反射率估计函数与被摄体的原始光谱反射率之间的差异 小。 版权所有（C）2008，JPO＆INPIT

    Method for measuring degree of decoloration of steel sheet surface
    295.
    发明专利
    Method for measuring degree of decoloration of steel sheet surface 失效
    测量钢板表面脱碳度的方法

    公开(公告)号：JPS61134636A

    公开(公告)日：1986-06-21

    申请号：JP25709184

    申请日：1984-12-05

    Applicant: Kawasaki Steel Corp

    Inventor： TORAO AKIRA

    IPC: G01J3/51

    CPC classification number: G01J3/51 ,  G01J3/465 ,  G01J3/502

    Abstract: PURPOSE:To quantify and detect continuously a degree of decoloration without intervention of a worker by irradiating a white light to the surface of a steel sheet and obtaining tristimulus values in accordance with the reflected light and obtaining a whiteness index or color difference value from tristimulus values. CONSTITUTION:A running steel sheet 10 is irradiated with a white light source 14, and the reflected light is separated into spectral components by a reflecting diffraction grating 20, and these spectral components are detected simultaneously in a visible wavelength area by a parallel photodetector array 22. The detected signal is given to an analog/digital operation processing device 24, and tristimulus values X, Y, and Z are obtained from the given signal in the device 24, and a whiteness index W or a color difference DELTAE is operated in accordance with these values X, Y, and Z to convert them to information of a degree of decoloration. Thus, the worker finds the occurrence condition of the degree of decoloration on a basis of the output result of the degree of decoloration and prevents the occurrence of decoloration.

    Abstract translation: 目的：通过向钢板表面照射白光，并且根据反射光获得三刺激值，并且从三刺激值获得白度指数或色差值，定量并连续检测一次脱色度， 。 构成：用白色光源14照射运行钢板10，通过反射衍射光栅20将反射光分离成光谱分量，并且通过平行光电检测器阵列22在可见光波长区域同时检测这些光谱分量 检测到的信号被提供给模拟/数字运算处理装置24，并且根据装置24中的给定信号获得三刺激值X，Y和Z，并且白度指数W或色差DELTAE按照 使用这些值X，Y和Z将它们转化为脱色度的信息。 因此，工人根据褪色度的输出结果找到脱色度的发生条件，防止脱色的发生。

    Measurement of optical density relating to color light
    296.
    发明专利
    Measurement of optical density relating to color light 失效
    相对于颜色光的光密度的测量

    公开(公告)号：JPS61112931A

    公开(公告)日：1986-05-30

    申请号：JP23559984

    申请日：1984-11-08

    Applicant: Canon Inc

    Inventor： SASAKI TAKU

    IPC: G01J3/50 ,  G01J3/46 ,  G01J3/51 ,  H04N1/48 ,  H04N1/60

    CPC classification number: G01J3/46 ,  G01J3/0251 ,  G01J3/465 ,  G01J3/502 ,  G01J3/51 ,  H04N1/482 ,  H04N1/6016

    Abstract: PURPOSE:To provide data for enable more accurate color reproduction to a field of color printing, by measuring optical density having a clear colorimetric definition. CONSTITUTION:The reflected light of a specimen is incident to a spectroscope 18 through a pervious specimen chamber 16 by the light from a light source 14. The spectroscope 18 divides the reflected light into lights classified by wavelength component through a diffraction lattice 19 to allow said lights to irradiate a photodiode array 20. The reflectivity at every wavelength received by the photodiode array 20 is inputted to an operation circuit 21 and three stimulation values X, Y, Z are calculated according to JISZ8722. Further, the operation circuit 21 calculates the density value of each color from three stimulation values X, Y, Z according to a specific formula.

    Abstract translation: 目的：提供数据，以便通过测量具有清晰比色定义的光密度来实现彩色打印领域的更准确的色彩再现。 构成：试样的反射光通过来自光源14的光通过透过试样室16入射到分光镜18.分光镜18将反射光通过衍射光栅19分成波长成分分类的光，以允许所述 光照射光电二极管阵列20.由光电二极管阵列20接收的每个波长的反射率被输入到操作电路21，并根据JISZ8722计算三个刺激值X，Y，Z。 此外，运算电路21根据具体的公式从三个刺激值X，Y，Z计算每种颜色的浓度值。

    Image Inspection Device
    299.
    发明申请
    Image Inspection Device 审中-公开

    公开(公告)号：US20180328789A1

    公开(公告)日：2018-11-15

    申请号：US15925802

    申请日：2018-03-20

    Applicant: Keyence Corporation

    Inventor： Manabu Kido

    IPC: G01J3/50

    CPC classification number: G01J3/502 ,  G01J2003/466 ,  G01N21/88 ,  G06K9/00 ,  G06K9/34 ,  G06K9/46 ,  G06T7/00 ,  G06T7/0004 ,  G06T2207/10024 ,  G06T2207/30164

    Abstract: The invention reduces a variation of a result of image inspection by alleviating a burden on the user relating to designation of an extracted color. An image inspection device displays a color image of an inspection target object, receives designation of at least a foreground region, and extracts a foreground color and a background color as color information from the foreground region and a background region, respectively. The image inspection device calculates a distance between a color of each pixel of the color image and the foreground color in a color space, and generates a foreground distance image. Similarly, the image inspection device forms a background distance image. The image inspection device inspects the inspection target object using a foreground-background image created by combining the foreground distance image and the background distance image.

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