Fast low-memory paper color suppression algorithm

Details Fast low-memory paper color suppression algorithm Fast low-memory paper color suppression algorithm

2004-10-12

2008-09-30

Coles, Edward L. (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S518000, C358S003230, C358S522000, C382S162000, C382S167000, C382S168000

Reexamination Certificate

active

07430060

ABSTRACT:
A fast, low-memory-requiring, adaptive algorithm for determining and correcting for page background color generally involves quantizing the color component values of the pixels of the scanned page, dividing the scanned color space into a set of bins, and assigning each color in the scanned representation to a particular one of the bins to obtain a summary of the distribution of colors. Statistical information that is indicative color component characteristics of colors in a particular bin is collected for each bin. Using this information, each bin that constitutes a color peak is identified, and a region of influence for each color peak with respect to bins that are not color peaks is determined. The color peak corresponding to the background color of the document is then determined, according to predetermined rules that take into consideration the statistical information and region of influence determination. Three 1-D look-up tables are then constructed to adjust scanned colors.

REFERENCES:
patent: 5251023 (1993-10-01), Arimoto et al.
patent: 5689590 (1997-11-01), Shirasawa et al.
patent: 6064494 (2000-05-01), Hirota et al.
patent: 6323957 (2001-11-01), Ball
patent: 6389162 (2002-05-01), Maeda
patent: 6816196 (2004-11-01), Mann
patent: 6995866 (2006-02-01), Feng et al.
patent: 7102786 (2006-09-01), Takahashi et al.
patent: 7133070 (2006-11-01), Wheeler et al.
patent: 2001/0012399 (2001-08-01), Tohyama et al.
patent: 2003/0095134 (2003-05-01), Tuomi et al.

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