Precise discrimination of image type

Details Precise discrimination of image type Precise discrimination of image type

1996-12-05

1998-07-28

Vu, Kim Yen

Image analysis

Image segmentation

Distinguishing text from other regions

382292, 358462, 358464, 358426, H04N 1405, H04N 1407

Patent

active

057871957

ABSTRACT:
An image processing apparatus having: an input unit for inputting image data; a unit for producing a plurality of parameters from a region consisting of data for the input object pixel and peripheral pixels; and a discriminating unit for discriminating to what extent the region preferably, just the object pixel is to be regarded as character image or halftone image, in accordance with correlation of the plurality of parameters.

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Yoshida et al., "Bi-level Rendition of Images Containing Text, Screened Halftone and Continuous Tone, " IEEE Global Telecommunications Conference Globecom '91, Dec. 1991, vol. 1, pp. 3.7.1-3.7.6.

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