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    • 86. 发明申请
    • IMAGE READING APPARATUS, MULTIFUNCTION PRINTER APPARATUS, AND IMAGE PROCESSING METHOD
    • 图像读取装置,多功能打印机装置和图像处理方法
    • US20090161138A1
    • 2009-06-25
    • US12339040
    • 2008-12-19
    • Takashi NakamuraFumihiro GotoTohru IkedaAkitoshi YamadaHidetsugu Kagawa
    • Takashi NakamuraFumihiro GotoTohru IkedaAkitoshi YamadaHidetsugu Kagawa
    • G06F3/12
    • H04N1/484H04N1/6027H04N1/6094
    • This invention is directed to a method capable of performing appropriate under color removal in image original reading. According to this method, under color removal of the original is performed as follows. A printing medium without any printed image is read by primary and complementary color readings. A brightness signal distribution is generated by converting, using a provisional table, each of image data generated by the reading methods. The lowest one of signal levels is selected from each of the distributions. In correspondence with each of the primary and complementary color readings, a conversion table is formed, which converts the image data to make a pixel value corresponding to the selected lowest one of the signal levels to a value representing white. Under color removal of the image data is performed using a corresponding conversion table in accordance with the reading method of the image original.
    • 本发明涉及一种能够在图像原始阅读中执行适当的底色去除的方法。 根据该方法,原稿的脱色如下进行。 没有任何打印图像的打印介质通过主色和补色读数读取。 通过使用临时表转换通过读取方法生成的每个图像数据来生成亮度信号分布。 从每个分布中选择最低的一个信号电平。 对应于主要和补充颜色读数中的每一个,形成转换表,其转换图像数据以使对应于所选择的最低信号电平的像素值为代表白色的值。 根据图像原稿的读取方法,使用相应的转换表执行图像数据的颜色去除。