A 1D bar code decoding method
A decoding method and technology for one-dimensional barcodes, applied to the decoding field of one-dimensional barcode fuzzy pattern recognition, can solve the problems of easy misinterpretation, error-prone barcodes, and difficult to distinguish, so as to achieve accurate processing and identification, increase the error rate, and accurately The effect of decoding
Inactive Publication Date: 2008-03-12
广州市朗特数码科技有限公司
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[0009] Among the published coding schemes, the decoding error rate caused by the coding of multi-width coded barcodes is low, while the barcodes with two width codes are relatively error-prone
The published barcode decoding method uses the similar edge distance measurement method, which is a traditional classic barcode algorithm. Although it can effectively decode barcodes encoded with multiple element widths, this method is not suitable for barcodes with two width elements. Suitable, the reason is that the calculation results of the similar side distance measurement of the two width element barcodes are very close, and it is difficult to distinguish due to printing and other deviations, and some of the barcode coding logic is not strict enough, so it is easy to misinterpret. linear barcode
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[0049] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0050] A kind of fuzzy identification and decoding method of one-dimensional barcode of the present invention, this method is carried out by the barcode decoding system that contains laser scanning device, signal preprocessing unit, central processing unit and scanning alarm output unit, and it comprises the following steps:
[0051] (a) The laser scanning device collects barcode data, and converts the collected data into bar / space pulse electrical signals, and then transmits the electrical signals to the signal preprocessing unit;
[0052] (b) The electrical signal is converted into an interrupt signal in the signal preprocessing unit and output to the central processing unit, where it is queued according to the priority level of the encoding type, and barcodes with multiple widths are decoded first, and barcodes with two widths are finally dec...
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The one-dimensional bar code distinguishing and decoding method in fuzzy mode is completed in a bar code decoding system comprising laser scanning unit, signal pre-treating unit, CPU unit and scanning alarm and output unit. The method includes the following steps: converting the acquired data into electric bar / gap pulse signal; signal pre-treatment; classifying treatment of code form characteristic value; fuzziness degree calculation; polymerization degree calculation; adding the fuzziness degree and the polymerization degree; calculating and matching with the corresponding code list of distinguishable code, which has the sum of fuzziness degree and polymerization degree smaller than certain constant number, while discarding undistinguishable code; discarding code incapable of matching; repeating until finishing the sampled data. The present invention is simple, efficiency and fast.
Description
technical field [0001] The invention relates to a decoding method of a one-dimensional barcode, in particular to a decoding method for fuzzy pattern recognition of the one-dimensional barcode to solve the problem that the linear code of the one-dimensional barcode is not clearly distinguished and easily causes misinterpretation. Background technique [0002] The bar code is composed of a group of bar and space symbols arranged according to certain coding rules. "Bar" refers to the part with low reflectivity to light, and "space" refers to the part with high reflectivity to light. The data composed of these bars and spaces is used To represent information composed of certain characters, numbers and symbols, which can be read by specific equipment and converted into binary and decimal information compatible with computers. Each letter of a one-dimensional barcode (which may be text or numbers or alphanumerics) is composed of several lines (Bar) and several blanks (Space). The...
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IPC IPC(8): G06K7/10
Inventor 丁援陈代棠欧贝怡马振明
Owner 广州市朗特数码科技有限公司