A Study Of The Code-128 Decoding System On The Basis Of Image Processing And Identification Technique

Using Image Processing to implement the decoding system of bar code identification is a hotspot in the barcode technique research fields. Firstly, this paper introduces the bar code technique and the methods and contents of Digital Image Processing related to the decoding system. On the basis of formation and operation principles of the bar code identification system , the author has studied the moment-invariants theory of pattern recognition, and combined the other image processing techniques, then developed a bar code identification system which can recognize not only the lightly contaminated and incomplete bar code but also the distorted bar code with arbitrarily angle. Using the idea of the layers, the author has consteructed a kind of two dimension barcode , and developed the identification system for it. The innovations in this paper, have been proved by the lab test, have certain theoretical and practical value.