Method for modifying the resolution of a digitized image

Details Method for modifying the resolution of a digitized image Method for modifying the resolution of a digitized image

1996-12-18

1999-12-21

Boudreau, Leo H.

Image analysis

Image transformation or preprocessing

Changing the image coordinates

382254, 382256, 382258, 382266, 382274, 382299, 382318, 382319, 382321, 358400, 358403, 358407, 358408, 358428, 358525, G06K 932, H04N 100

Patent

active

060059893

ABSTRACT:
In a method for modifying the resolution of an image obtained by digitising a real image, the digitised image includes a plurality of pixels of a particular intensity. The outlines in the digitised image are studied and isolated and additional pixels are created by interpolation of the intensities of original pixels located on one side of an outline to form an image with a modified resolution. The studying of outlines is achieved by locating, for close pixels, the intensity transitions representative of a gradient exceeding a particular threshold. The method is utilized for modifying the image resolution of facsimile machines.

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