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    • 2. 发明申请
    • Image processing apparatus, image forming apparatus, control method of image processing apparatus, image processing program, and a computer-readable storage medium
    • 图像处理装置,图像形成装置,图像处理装置的控制方法,图像处理程序和计算机可读存储介质
    • US20070153020A1
    • 2007-07-05
    • US11650247
    • 2007-01-04
    • Chizu Inoue
    • Chizu Inoue
    • G09G5/02
    • H04N1/6019
    • In an image processing apparatus of the present invention, interpolation operations are performed with a LUT to obtain CMY image data corresponding to input RGB image data. The image processing apparatus includes a gamut selecting section for selecting a gamut corresponding to an inputted image, from an RGB color space, based on input RGB image data; a LUT writing section for changing CMY image data in the LUT to CMY image data corresponding to grid points contained in the selected gamut; and a position information changing section for writing position information in a memory, wherein the position information indicates RGB color space positions of the grid points contained in the selected gamut. Thus, the image processing apparatus of the present invention can save memory space.
    • 在本发明的图像处理装置中,使用LUT执行内插操作,以获得与输入的RGB图像数据相对应的CMY图像数据。 图像处理装置包括:色域选择部分,用于根据输入的RGB图像数据从RGB颜色空间中选择与输入的图像相对应的色域; 用于将LUT中的CMY图像数据改变为对应于包含在所选色域中的网格点的CMY图像数据的LUT写入部分; 以及位置信息改变部分,用于将位置信息写入存储器,其中位置信息指示包含在所选色域中的网格点的RGB颜色空间位置。 因此,本发明的图像处理装置可以节省存储空间。
    • 3. 发明授权
    • Image processing apparatus, image forming apparatus, method of image processing, and a computer-readable storage medium storing an image processing program
    • 图像处理装置,图像形成装置,图像处理方法以及存储图像处理程序的计算机可读存储介质
    • US07940434B2
    • 2011-05-10
    • US11650247
    • 2007-01-04
    • Chizu Inoue
    • Chizu Inoue
    • G03F3/08
    • H04N1/6019
    • In an image processing apparatus of the present invention, interpolation operations are performed with a LUT to obtain CMY image data corresponding to input RGB image data. The image processing apparatus includes a gamut selecting section for selecting a gamut corresponding to an inputted image, from an RGB color space, based on input RGB image data; a LUT writing section for changing CMY image data in the LUT to CMY image data corresponding to grid points contained in the selected gamut; and a position information changing section for writing position information in a memory, wherein the position information indicates RGB color space positions of the grid points contained in the selected gamut. Thus, the image processing apparatus of the present invention can save memory space.
    • 在本发明的图像处理装置中,使用LUT执行内插操作,以获得与输入的RGB图像数据相对应的CMY图像数据。 图像处理装置包括:色域选择部分,用于根据输入的RGB图像数据从RGB颜色空间中选择与输入的图像相对应的色域; 用于将LUT中的CMY图像数据改变为对应于包含在所选色域中的网格点的CMY图像数据的LUT写入部分; 以及位置信息改变部分,用于将位置信息写入存储器,其中位置信息指示包含在所选色域中的网格点的RGB颜色空间位置。 因此,本发明的图像处理装置可以节省存储空间。
    • 4. 发明授权
    • Color conversion with hue straightening using multiple look-up tables and interpolation
    • 使用多个查找表和插值的色调校正的颜色转换
    • US07190487B2
    • 2007-03-13
    • US10156279
    • 2002-05-27
    • John Charles DalrympleJames Zhixin ChangChizu Inoue
    • John Charles DalrympleJames Zhixin ChangChizu Inoue
    • G06F15/00
    • G06F15/00G06K15/02H04N1/6025
    • A method of color conversion includes providing a first color domain input signal set having plural input signals; sorting the input signals of the first color domain input signal set according to signal intensity; designing and generating plural 1-D look-up table sets for color polyhedrons; selecting a set of look-up tables for use with a specific color polyhedron, wherein said selecting is a function of a section of the polyhedron determined as a function of the input signal set; looking up values in the look-up table set as a function of the input signal set; generating weights as a function of the sorted signal intensities; and interpolating the output from the selected look-up tables as a function of the selected look-up table and the generated weights to produce a color domain signal set which is converted to a desired color domain signal set.
    • 一种颜色转换方法包括提供具有多个输入信号的第一色域输入信号组; 根据信号强度对第一色域输入信号的输入信号进行分类; 设计和生成彩色多面体的多个1-D查找表集合; 选择一组用于特定彩色多面体的查找表,其中所述选择是根据输入信号组确定的多面体的一部分的函数; 查找查找表中的值作为输入信号集的函数; 产生权重作为分类信号强度的函数; 并且根据所选择的查找表和所生成的权重内插来自所选择的查找表的输出,以产生被转换为期望的色域信号集的色域信号集。