Image analysis – Pattern recognition
Reexamination Certificate
2011-06-28
2011-06-28
Werner, Brian P (Department: 2624)
Image analysis
Pattern recognition
C382S210000, C382S312000, C365S125000, C365S216000, C365S235000, C369S103000
Reexamination Certificate
active
07970209
ABSTRACT:
There is provided an optical information detecting method. The method includes: detecting an image of a source data page coded with balanced codewords by the use of 1:N (where N is greater than 1) excessive detection pixels; determining a distribution pattern of valid detection pixels and invalid detection pixels to be corrected in the detected image by the use of a light intensity distribution of the detected image; and dividing the detected image into balanced codeword detecting areas corresponding to the balanced codewords and sampling data of the balanced codeword detecting areas by the use of the determined distribution pattern and an optical distribution characteristic of the balanced codewords. Accordingly, it is possible to efficiently detect optical information by the use of a 1:N over-sampling method. Specifically, the distribution pattern of valid detection pixels and invalid detection pixels in the detected image of a data page can be properly used to sample a balanced code.
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Hwang Eui-Seok
Kim Hak-Sun
Yoon Pil-Sang
Daewoo Electronics Corp.
Drennan Barry
Revolution IP, PLLC
Werner Brian P
LandOfFree
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