Image detection and background processing device and method

Details Image detection and background processing device and method Image detection and background processing device and method

1995-09-28

1998-06-02

Johns, Andrew W.

Image analysis

Image segmentation

Distinguishing text from other regions

358464, G06K 936

Patent

active

057613389

ABSTRACT:
An image detection and background processing device and method having a image reader for reading a whole document and converting the read document to a digital image data of multi value. The image forming apparatus detects the density of a background in the document based on the digital image data obtained by the image reader, sets a reference value based on the background density as well as the distribution of the digital image data, and distinguishes an image area of the document from the background by comparing the reference value and the image data so as to execute a process concerning the distinguished image area (for example, an automatic magnification selection process or an automatic paper selection process). The apparatus and method includes analysis capability for determining whether the background area can be accurately discriminated from the image area based on image data.

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patent: 5363211 (1994-11-01), Hasebe et al.
patent: 5467203 (1995-11-01), Kawata

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