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    • 11. 发明申请
    • Image processing apparatus, image forming apparatus, and image processing method
    • 图像处理装置,图像形成装置和图像处理方法
    • US20060215194A1
    • 2006-09-28
    • US11391808
    • 2006-03-28
    • Makio GotohMasanori Minami
    • Makio GotohMasanori Minami
    • G06F15/00
    • H04N1/40075H04N1/60
    • As the color conversion process for image data of an RGB signal, a color correction section 26 performs a color correction process, and a black generation and under color removal section 27 performs a black generation and under color removal process. In the color conversion process, the color correction section 26 and the black generation and under color removal section 27 are supplied with a halftone frequency recognized by a halftone frequency recognition section 23. The color correction section 26 and the black generation and under color removal section 27 change the process based upon the halftone frequency. As a result, an image processing apparatus is realized in which improved image quality can be produced by an optimum image process that is performed on an image containing a halftone area depending upon the halftone frequency of the halftone area so that image quality is improved.
    • 作为RGB信号的图像数据的颜色转换处理,颜色校正部26进行颜色校正处理,黑色生成和下部颜色去除部27进行黑色生成和颜色除去处理。 在颜色转换处理中,颜色校正部分26和黑色产生和下
      色移除部分27被提供由半色调频率识别部分23识别的半色调频率。 颜色校正部分26和黑色生成和下面颜色去除部分27基于半色调频率改变处理。 结果,实现了一种图像处理装置,其中可以通过根据半色调区域的半色调频率对包含半色调区域的图像执行的最佳图像处理来产生改善的图像质量,从而提高图像质量。
    • 16. 发明授权
    • Image processing method and image apparatus, and image forming apparatus, program, and storage medium
    • 图像处理方法和图像装置,以及图像形成装置,程序和存储介质
    • US07142711B2
    • 2006-11-28
    • US10341720
    • 2003-01-13
    • Makio GotoMasanori MinamiTatsuya Tanaka
    • Makio GotoMasanori MinamiTatsuya Tanaka
    • G06K9/00
    • H04N1/6072
    • In a color conversion section 10a, a mode judging section 31 judges a mode in effect: a copy mode or a printer mode, according to a mode judging signal. When the copy mode is identified, the mode judging section 31 supplied RGB data to a first color conversion process section 32, and the first color conversion section 32 carries out a first color conversion process in which a transitional color conversion value, which is color-transited from a precise color conversion value and a memory color conversion value, is set as a color conversion value with respect to memory color corresponding data. When the printer mode is identified, the mode judging section 31 supplies the RGB data to a second color conversion process section 33, and the second color conversion process section 33 carries out a second color conversion process in which the memory color conversion value is set as a color conversion value with respect to the memory color corresponding data.
    • 在颜色转换部分10a中,模式判断部分31根据模式判断信号判断有效的模式:复印模式或打印机模式。 当识别复印模式时,模式判断部分31将RGB数据提供给第一颜色转换处理部分32,并且第一颜色转换部分32执行第一颜色转换处理,其中过渡颜色转换值是彩色转换处理部分, 从精确的颜色转换值和存储器颜色转换值转换,被设置为相对于存储器颜色对应数据的颜色转换值。 当识别打印机模式时,模式判断部分31将RGB数据提供给第二颜色转换处理部分33,并且第二颜色转换处理部分33执行第二颜色转换处理,其中存储器颜色转换值被设置为 相对于存储器颜色对应数据的颜色转换值。