A one-dimensional bar code identification method and system based on waveform matching

Abstract

The invention discloses a one-dimensional bar code identification method and system based on waveform matching, and the method mainly comprises the steps: obtaining a row of data of a bar code image,searching a starting point and an end point of a bar code waveform, judging whether the searching is successful or not, obtaining wave crests and wave troughs of the bar code waveform if the searchingis successful, otherwise confirming that the searching is failed, and finishing the identification; Based on the positions and gray levels of the starting point and the ending point, local illumination equalization and gray level normalization processing are carried out; Based on the coarse screening peak-valley position library, the fuzzified bar code waveform library and the starting point, theterminal point, the wave crests and the wave troughs, performing peak-valley position-based screening on each fuzzified bar code waveform to obtain a plurality of fuzzified bar code waveforms; And performing cumulative calculation on the difference absolute values of the sampling points one by one, and confirming that the blurred bar code waveform with the minimum cumulative value is the bar codeto be matched. The method can effectively identify the bar code picture obtained under the defocus blurring condition, and can effectively improve the production work efficiency.

Description

technical field [0001] The invention belongs to the technical field of data processing, and in particular relates to a one-dimensional barcode recognition method and system based on waveform matching. Background technique [0002] Bar code technology is an emerging technology integrating communication technology, computer technology and radio and television technology. Its advantages are high reliability, immutability, fast input speed, and large amount of information collected; the development of social informatization has promoted the development of barcode technology, and is widely used in medical and health care, commodity circulation, logistics warehousing, ticket management and post and telecommunications. In various fields of production and life such as communication, the production efficiency has been greatly improved. [0003] With the application and development of computers, barcode technology came into being; it mainly studies how to use the identification infor...

AI Technical Summary

Problems solved by technology

However, judging from the current situation in our country, there are many serious quality problems in the printing of barcodes. According to the statistics of the barcode work conference, the unqualified rate of barcode printing in my country is as high as 30%, and the quality of barcode printing is an important factor affecting its correct reading.

If scanning misreading occurs due to poor quality, it will not only cause unnecessary economic losses but also greatly affect work efficiency

The unqualified printing quality mainly shows that the barcode is widened or missed, and the dirt, breakage and wear caused by the transportation process

Therefore, these factors will inevitably have a certain impact on the reading of barcodes, which greatly reduces the recognition rate of barcodes and seriously affects the correct reading of barcodes.

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