Character normalization using an elliptical sampling window for optical character recognition
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United States of America Patent
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Dec 11, 1990
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N/A
app pub date -
Nov 20, 1989
filing date -
Nov 20, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In character normalization for optical character recognition preprocessing employing horizontal and vertical scaling factors A and B, the value of each pixel in the normalized character image superimposed on the original character image is determined from the values of the pixels in the original image lying within an elliptical neighborhood surrounding the normalized character image pixel and having major and minor elliptical axes proportional to A and B.
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