| 摘要 |
An image processor comprising a control unit, wherein the control unit includes a determining unit that determines a reading mode suitable for a document based on image data corresponding to the document read by an reader; and a converting unit that converts the image data according to the reading mode. The determining unit includes a color detecting unit that detects color information based on the image data; a color determining unit that determines whether the reading mode is a color mode based on the color information; a background detecting unit that detects a background of the document; a background removing unit that removes the background; a gray detecting unit that detects a size of an area of a portion which is not removed in the image data as gray information; and a gray determining unit that determines whether the reading mode is a gray mode based on the gray information.
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