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    • 21. 发明授权
    • Image processing apparatus and method for erasing dirty spots in reproducing systems
    • 用于擦除再现系统中的脏污点的图像处理装置和方法
    • US06243500B1
    • 2001-06-05
    • US09161225
    • 1998-09-28
    • Hiroyuki Kawamoto
    • Hiroyuki Kawamoto
    • H04N140
    • H04N1/4097H04N1/40062H04N1/40075H04N1/409
    • An image processing apparatus which processes image data either in a character image reading mode or a character/photo mixed-image reading mode. The apparatus includes an MTF filter that emphasizes the image data, a smoothing filter that smooths the image data, a memory that stores white data, a mesh-screen image judging device that judges whether the image data is a mesh-screen image in the character image reading mode and the character/photo mixed-image reading mode, and an isolated-pixel judging device that judges whether the image data is an isolated-pixel. A first selection device selects an output of the MTF filter when the isolated-pixel judging device judges the image data to be a non-isolated-pixel and selects the white data when the isolated-pixel judging device judges the image data to be an isolated-pixel, when the mesh-screen image judging device judges the image data to be a non-mesh-screen image. A second selection device selects an output of the first selection device when the mesh-screen image judging device judges the image data to be a non-mesh-screen image and selects an output of the smoothing filter when the mesh-screen image judging device judges said image data to be a mesh-screen image.
    • 一种在字符图像读取模式或字符/照片混合图像读取模式中处理图像数据的图像处理装置。 该装置包括强调图像数据的MTF滤波器,平滑图像数据的平滑滤波器,存储白色数据的存储器,网格屏幕图像判断装置,其判断图像数据是否是字符中的网格图像 图像读取模式和字符/照片混合图像读取模式,以及判断图像数据是否为孤立像素的孤立像素判断装置。 当孤立像素判断装置将图像数据判断为非隔离像素时,第一选择装置选择MTF滤波器的输出,并且当隔离像素判断装置判断图像数据为孤立像素时,选择白色数据 当网格屏幕图像判断装置将图像数据判断为非网格画面图像时,则形成图像。 当网格屏幕图像判断装置判定图像数据为非网格屏幕图像时,第二选择装置选择第一选择装置的输出,并且当网格屏幕图像判断装置判断时选择平滑滤波器的输出 所述图像数据为网状屏幕图像。
    • 24. 发明授权
    • Image checking device, printing system, image checking method, and computer program product
    • 图像检测装置,打印系统,图像检查方法和计算机程序产品
    • US08755083B2
    • 2014-06-17
    • US13314313
    • 2011-12-08
    • Hiroyuki Kawamoto
    • Hiroyuki Kawamoto
    • H04N1/60G06K1/00
    • H04N1/6033H04N1/6008
    • An image checking device checks a printed image printed out on a printing medium. The image checking device includes a data acquiring unit that acquires checking-image data, original reference image data input to an image forming device, and, from an attribute-information storage unit of the image forming device, attribute information about a printing medium; a correction-parameter storage unit that stores therein a correction parameter corresponding to the attribute information; an image generating unit that reads, from the correction-parameter storage unit, a correction parameter corresponding to the attribute information, corrects the original reference image data by using the correction parameter, and generates corrected reference image data; and an image checking unit that compares the checking-image data with the corrected reference image data by using a pre-set value to determine the degree of matching between the checking-image data and the corrected reference image data, thereby performing image checking on the printed image.
    • 图像检查装置检查打印在打印介质上的打印图像。 图像检查装置包括数据获取单元,其获取检查图像数据,输入到图像形成装置的原始参考图像数据,以及从图像形成装置的属性信息存储单元获取关于打印介质的属性信息; 校正参数存储单元,其存储与所述属性信息对应的校正参数; 从校正参数存储单元读取与属性信息对应的校正参数的图像生成单元,通过使用校正参数校正原始参考图像数据,生成校正后的参考图像数据; 以及图像检查单元,其通过使用预设值将检查图像数据与校正的参考图像数据进行比较,以确定检查图像数据和校正的参考图像数据之间的匹配程度,从而对 打印图像。
    • 26. 发明授权
    • Image output inspection system, image inspection apparatus, and computer program product
    • 图像输出检测系统,图像检测仪器和计算机程序产品
    • US08488199B2
    • 2013-07-16
    • US12926828
    • 2010-12-13
    • Hiroyuki Kawamoto
    • Hiroyuki Kawamoto
    • H04N1/405H04N1/60G06K9/00G06K9/36
    • H04N1/40075
    • An image-output inspection system includes a printer controller that generates output image data subjected to halftone processing in accordance with an input image forming condition specified in a printer language, an image output device that forms an image on an image output medium on the basis of the output image data, and transmits the output image data, an image reader that reads the image output medium, and generates read image data, and an image inspection apparatus that is connected to the image output device, and generates correct image data by restoring image data before subjected to the halftone processing from the output image data, and determines whether a print state of the image output medium is good or not by comparing the correct image data with the read image data.
    • 图像输出检查系统包括:打印机控制器,其根据打印机语言指定的输入图像形成条件生成经过半色调处理的输出图像数据;图像输出装置,其基于图像输出介质在图像输出介质上形成图像 输出图像数据,并且发送输出图像数据,读取图像输出介质的图像读取器,并且生成读取的图像数据,以及连接到图像输出装置的图像检查装置,并且通过恢复图像生成正确的图像数据 在从输出图像数据进行半色调处理之前的数据,并且通过将正确的图像数据与读取的图像数据进行比较来确定图像输出介质的打印状态是否良好。
    • 29. 发明申请
    • Image data correcting device for correcting image data to remove back projection without eliminating halftone image
    • 图像数据校正装置,用于校正图像数据以去除背投影而不消除半色调图像
    • US20080094647A1
    • 2008-04-24
    • US11892107
    • 2007-08-20
    • Yuji TakahashiHiroyuki KawamotoHiroaki Fukuda
    • Yuji TakahashiHiroyuki KawamotoHiroaki Fukuda
    • H04N1/60
    • H04N1/4095
    • An image data correcting device eliminates a back projection image without eliminating an image corresponding to a low-intensity halftone image. An intensity difference detection part detects an intensity difference between first image data corresponding to a part of a predetermined small area and second image data corresponding to the remaining parts of the predetermined small area. A halftone detection part determining whether the first image data corresponds to a halftone image. An intensity change part changes an intensity of the first image data to a predetermined low intensity, when the intensity difference is equal to or smaller than a first predetermined value and the first image data does not correspond to the halftone image and the intensity of the first image data is equal to or smaller than a second predetermined value.
    • 图像数据校正装置消除背投影图像而不消除与低强度半色调图像相对应的图像。 强度差检测部分检测对应于预定小区域的一部分的第一图像数据与对应于预定小区域的剩余部分的第二图像数据之间的强度差。 确定第一图像数据是否对应于半色调图像的半色调检测部分。 当强度差等于或小于第一预定值并且第一图像数据不对应于半色调图像和第一图像的强度时,强度变化部分将第一图像数据的强度改变为预定的低强度 图像数据等于或小于第二预定值。