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    • 5. 发明授权
    • Image processing method and image processing apparatus
    • 图像处理方法和图像处理装置
    • US06822767B2
    • 2004-11-23
    • US09897893
    • 2001-07-05
    • Ryuji KawanoJun AsaiYuji Kamiya
    • Ryuji KawanoJun AsaiYuji Kamiya
    • H04N104
    • H04N1/4097
    • In a case where minute dirt is lain between light source and an original, since the light source moves in case of the fixing original reading which is an original reading system of reading an original image by fixing the original, the dirt is momently lighted by the light source and influence by the dirt for the read image is appeared in sight by only a minute dot. However, in case of the shifting original reading of reading the original image by shifting the original, since the relationship between the light source and the dirt is in a fixed state, the light source is always to light the dirt and the influence by the dirt for the read image is appeared in sight by a line or a plane. Therefore, in the present invention, edge emphasis degree of edge emphasis processing for the read image data is varied in accordance with a fact that the original reading system is the fixing original reading or the shifting original reading. Accordingly, the influence by the dirt in the shifting original reading can be reduced.
    • 在光源和原稿之间存在微小污垢的情况下,由于在通过固定原稿而读取原始图像的原始读取系统的固定原稿读取的情况下光源移动,所以灰尘被 光源和被读取图像的污垢影响仅在一点点出现。 然而,在通过移动原稿来读取原始图像的原稿读取的情况下,由于光源和污物之间的关系处于固定状态,所以光源总是照亮灰尘和污物的影响 因为读取的图像是通过线或飞机出现的。 因此,在本发明中,读取图像数据的边缘强调处理的边缘强调度根据原始读取系统是固定原稿读取或移位原始读取的事实而变化。 因此,可以减少原稿读取中的污物的影响。