摘要
介绍了RS码的编译码原理,分析PDF417码和四一七国家条码规范,并将RS码纠错技术应用到PDF417码编码、译码算法过程中,提出了一种优化的查表算法,完成了PDF417纠错的实现.运用该方法可以快速而准确地计算出纠错码的位置和差错幅值,并及时纠错.
It introduces encoding/decodeing principles of RS code, analyzes PDF417 code and 417 national bar codes standard, and applies error correcting technology of RS code to encoding and decoding PDF417. It also presents an optimization check-table algorithm for calculating error correction code words, finally realizing PDF417 error correcting. With this method, the position of error correcting code and error scope can be rapidly and effectively computed, and error can be corrected in good time.
出处
《广东工业大学学报》
CAS
2009年第2期69-73,共5页
Journal of Guangdong University of Technology
