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    • 5. 发明申请
    • IMAGE PROCESSING SYSTEM AND IMAGE SCANNING APPARATUS
    • 图像处理系统和图像扫描装置
    • US20110228343A1
    • 2011-09-22
    • US12880705
    • 2010-09-13
    • Kenzo IsogawaYasunori TaguchiNao MishimaNobuyuki Matsumoto
    • Kenzo IsogawaYasunori TaguchiNao MishimaNobuyuki Matsumoto
    • H04N1/409H04N1/04
    • H04N1/4092
    • In one embodiment, an image data acquisition unit, a filter setting unit and a filtering processor are provided. The image data acquisition unit acquires pixel data of first image data of an erect image obtained by a line sensor comprising a plurality of light receiving elements. The erect image is formed by a plurality of gradient index lenses of a lens array. The filter setting unit sets sharpening filter coefficients of a filter to be applied to the pixel data of the first image data corresponding to the respective light receiving elements, according to remainder values obtained respectively by dividing positions of the light receiving elements on the line sensor by an interval of a lens arrangement of the lens array. The filtering processor generates second image data sharpened by applying the obtained sharpening filter coefficients to the respective pixel data of the first image data.
    • 在一个实施例中,提供了图像数据获取单元,滤波器设置单元和滤波处理器。 图像数据获取单元获取由包括多个光接收元件的线传感器获得的直立图像的第一图像数据的像素数据。 直立图像由透镜阵列的多个渐变折射率透镜形成。 滤波器设定单元根据通过将线传感器上的受光元件的位置分割为线间传感器的位置而得到的余数值,设定要应用于与各光接收元件对应的第一图像数据的像素数据的滤波器的锐化滤波器系数 透镜阵列的透镜布置的间隔。 滤波处理器通过将获得的锐化滤波器系数应用于第一图像数据的各个像素数据来产生锐化的第二图像数据。