| 摘要 |
Noise does not occur even if an image of an object region extracted from an input image and a background image are stored separately, and then displayed or printed, at a boundary portion of the object region. A boundary region is set at the inner side of the object region of the input image, and a pixel value of an adjacent pixel at the outer side of the boundary of the object region is written to a corresponding pixel in the boundary region. Even if a difference occurs between the background image and the object image, when a document file is displayed or printed, since the pixel value of the pixel at the outer side of the object region is assigned to the pixel in the boundary region, noise due to average color does not occur.
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