The image processing apparatus is provided with a scanner unit that reads a document and generates image data; an edge vicinity pixel detection unit that detects pixels in the vicinity of the edge of the document based on luminance values of the image data generated by the scanner unit; a histogram creation unit that creates a histogram using the luminance values of pixels in a region of the document within a predetermined distance from the pixels in the vicinity of the edge; and a judgment unit that judges whether or not it is possible to separate a document region from a document-external region based on the created histogram.

 
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< IMAGE PROCESSING METHOD, RECORDING MEDIUM WITH RECORDED IMAGE PROCESSING PROGRAM AND IMAGE PROCESSING APPARATUS

> Method and apparatus for encoding/decoding image, computer-readable program therefore, and information recording medium storing same program

> IMAGE PROCESSING DEVICE AND IMAGE READING DEVICE

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