Image processing apparatus resolving dust problem
    15.
    发明申请
    Image processing apparatus resolving dust problem 审中-公开
    图像处理装置解决灰尘问题

    公开(公告)号:US20050179954A1

    公开(公告)日:2005-08-18

    申请号:US10898308

    申请日:2004-07-26

    摘要: An image processing apparatus includes a reading device stationed at a reading position. The reading device includes a light source that emits a reading light to an original document passing through the reading position. A photoelectric conversion element is provided to convert the reading light reflected from the original document into image data. A shading correction function is provided to apply shading correction to the image data in accordance with reference data obtained from a reference white plate. A memory is provided to store at least a line of the image data. A dust position specifying device is provided to specify a position of dust by detecting presence of dust at predetermined positions on a light path extending from the light source to the photoelectric conversion element in accordance with the image data. A counting device is provided to count a number of appearance times of the dust per each of the predetermined positions. An appearance transition device is provided to store appearance transition data of the dust per each of the predetermined positions.

    摘要翻译: 图像处理装置包括驻留在读取位置的读取装置。 读取装置包括向通过读取位置的原稿发出读取光的光源。 提供光电转换元件以将从原始文档反射的读取光转换为图像数据。 提供阴影校正功能以根据从参考白板获得的参考数据对图像数据应用阴影校正。 提供存储器以存储图像数据的至少一行。 灰尘位置指定装置被设置为根据图像数据检测从光源延伸到光电转换元件的光路上的预定位置处的尘埃的存在来指定灰尘的位置。 计数装置用于计算每个预定位置的灰尘的出现次数。 提供外观转换装置,用于存储每个预定位置的灰尘的外观转换数据。