Method and device for binarizing barcodes
A barcode and binarization technology, applied in the field of computer software, can solve the problems of low power consumption, high sensitivity and low cost, and achieve the effect of low power consumption, high sensitivity and low cost
Active Publication Date: 2018-02-09
BYD SEMICON CO LTD
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Problems solved by technology
[0005] For this reason, the first object of the present invention is to propose a kind of barcode is carried out binarization method, solved the horizontal direction and vertical direction inclination problem when barcode scanning, and this method sensitivity is high, and cost is low, and power consumption is little
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[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0028] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicat...
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The invention proposes a method and device for binarizing a barcode, which solves the problem of inclination in the horizontal and vertical directions when the barcode is scanned, and has high sensitivity, low cost and low power consumption. Wherein the method comprises the following steps: scan the barcode and generate a corresponding digital signal, and filter the digital signal; sample the filtered digital signal to generate a plurality of sampling points; respectively, according to the plurality of sampling points, Obtain a set of rising edges and a set of falling edges, wherein the set of rising edges includes a plurality of rising edges, and the set of falling edges includes a plurality of falling edges; obtain a plurality of maximum points respectively according to adjacent rising edges and falling edges and a plurality of minimum value points; and dynamically determine the threshold corresponding to the sampling point between the maximum value point and the minimum value point according to the adjacent maximum value point and minimum value point, and according to the threshold value pair Sampling points between the maximum value point and the minimum value point are assigned.
Description
technical field [0001] The invention relates to the technical field of computer software, in particular to a method for binarizing barcodes and a device for binarizing barcodes. Background technique [0002] At present, the commonly used binarization methods include fixed threshold comparison method, floating threshold method and differential binarization method. Among them, when the external light intensity is fixed, the voltage threshold comparison method can be used to set the comparison threshold at one time through experiments, that is, the fixed threshold comparison method has the characteristics of simplicity and convenience. The differential binarization method has the characteristic of realizing binarization measurement within a certain range of signal variation, but the anti-interference ability is poor when the signal is small. The floating threshold method means that the threshold level of the input terminal of the voltage comparator fluctuates up and down with ...
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IPC IPC(8): G06K9/38
Inventor 郭平日郑利刘辉杨云
Owner BYD SEMICON CO LTD