Lijun Mao
Abstract
This paper mainly introduces the PDF417 two-dimension bar code structure and coding principle,and gives the data word cod.ing,error correcting code encoding and symbol codeword coding algorithm,finally through the experiment to generate bar code images.
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This paper mainly introduces the PDF417 two-dimension bar code structure and coding principle,and gives the data word cod.ing,error correcting code encoding and symbol codeword coding algorithm,finally through the experiment to generate bar code images.
Key concepts: Code word, Computer science, Constant-weight code, Variable-length code, Coding (social sciences), Prefix code, Code (set theory), Systematic code