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    • 1. 发明授权
    • Image processing apparatus with improved image reduction
    • 具有改善图像减少的图像处理装置
    • US5317417A
    • 1994-05-31
    • US783031
    • 1991-10-25
    • Katsumi YamamuraHideyuki Hanaoka
    • Katsumi YamamuraHideyuki Hanaoka
    • G09G5/26G06T3/40H04N1/393H04N7/12
    • G06T3/4007
    • An image reducing apparatus includes a black-pixel counting section for counting a number of black pixels in an N.times.M-pixel area in an original image represented by white and black levels, where N and M denote predetermined integers equal to or greater than 2; a pattern comparing section for comparing a pixel pattern in the N.times.M-pixel area and an area surrounding the N.times.M-pixel area with predetermined reference patterns; and a level determining section for determining a level of a pixel in a reduction-resultant image in accordance with the black-pixel number counted by the black-pixel counting section and with a result of the pattern comparison by the pattern comparing section, the reduction-resultant image pixel corresponding to the N.times.M-pixel area in the original image.
    • 图像缩小装置包括黑色像素计数部分,用于对由白色和黑色等级表示的原始图像中的N×M像素区域中的黑色像素数进行计数,其中N和M表示等于或大于2的预定整数; 模式比较部分,用于将N×M像素区域中的像素图案与N×M像素区域周围的区域与预定的参考图案进行比较; 以及电平确定部分,用于根据由黑色像素计数部分计数的黑色像素数量和通过图案比较部分的图案比较的结果来确定缩小结果图像中的像素的电平, - 与原始图像中的N×M像素区域相对应的图像像素。