Enhanced fidelity reproduction of images with device independent numerical sample output

A method of enhancing the contour fidelity of reproduction of an image represented by a plurality of signals on an overscanned microaddressable display system, comprising the steps of:

• storing a portion of the signals representing an image portion;
• isolating a region of the signals of said image portion to form a window including a formation of signals including a target signal;
• comparing a group of signals encompassing said signal formation including said target signal within said window with a set of stored signal patterns;
• identifying a matching signal pattern;
• and
• determining for said target signal a sampled, device-independent multiple-bit coded number from a look-up table corresponding to the matching signal pattern in said set stored signal of patterns.

An overscanned microaddressable display system for enhancing the contour fidelity of reproductions of a binary image represented by a plurality of pixels, comprising:

• means for receiving pixels of the image, said pixels representing at least portions of successive lines of the image;
• first memory means for storing a portion of said pixels;
• means for isolating a region of said pixels to form a composite pixel pattern;
• a source of standard pixel patterns;
• means for comparing said composite pixel pattern with said standard pixel patterns;
• logic means responsive to the comparison for producing logic signals representative of the comparison;
• and
• enhancing means responsive to said logic signals to produce device-independent multiple-bit enhanced data values representing each pixel of the image.