Method of reducing document size for digital display

Details Method of reducing document size for digital display Method of reducing document size for digital display

1996-12-06

1998-10-27

Kelley, Christopher

Image analysis

Image enhancement or restoration

Image filter

382299, 358447, G06K 900

Patent

active

058287922

ABSTRACT:
A method of enhancing predefined features of a scanned image of a document page of reduced size for display includes subsampling the pixels of the scanned image to achieve a desired degree of reduction of the image size. The subsampled signals are passed through a filter to obtain gray scale values. A sharpening filter is applied to the subsampled pixels to enhance the predefined features of the image.

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L. O'Gorman, et al., "A Comparison of Methods and Computation for Multi-Resolution Low and Band-Pass Transforms for Image Processing", Computer Vision, Graphics, and Image Processing, vol. 37, pp. 386-401 (1987).

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