Method of classifying colors of color based image code
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United States of America Patent
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Jul 12, 2011
Grant Date -
Dec 4, 2008
app pub date -
Jun 18, 2007
filing date -
Jun 23, 2006
priority date (Note) -
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Abstract
Provided is a method of classifying colors of a color based image code. The colors of each cell forming the color based image code are classified by sampling a predetermined number of pixels from each cell and then applying a max channel based clustering method, a white balance based color clustering method, a single-linkage algorithm based color classification method, a K-means algorithm based color classification method, or the like. Accordingly, the colors of an image code can be accurately recognized despite of a color distortion due to characteristics of a camera, a printing medium, etc.
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