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In the thesis, we will develop a 2D code system and put
emphasis on three topics: security, error correction and
reading problems. The system can encodeEnglish, Chinese and
special characters. About security, a new idea isproposed.
The input data is divided into two parts: general data and
secretdata. In order to achieve the security purpose, we hide
the secret data in the2D code pattern which contains the general
data and some extra codes for errorcorrection. In the part of
error correction, the Reed-Solomon(RS) code withhigh error
correction capability is chosen to recover errors. As to the
designof the 2D code pattern, some reading problems are
considered, these problemsinclude broken, noise, rotation,
projection distortion, scaling and unstablelighting conditions.
Experimental results are given to show that the proposedsystem
is robust for these reading problems. Besides, we also
design aname-card management system.
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