Bar code decoding method and binarization method thereof
A decoding method and binarization technology, applied in the field of electronic science, can solve problems such as increasing system load, increasing decoding time, and increasing the probability of errors
Active Publication Date: 2013-07-31
NEWLAND DIGITAL TECH CO LTD
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However, in the above binarization process, the binarization process is usually performed for each pixel, so the gray level of each pixel needs to be compared with the threshold value, which will increase the decoding time, and will Increase the probability of errors and increase the system load
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[0021] Regarding the features and technical content of the present invention, please refer to the following detailed description and accompanying drawings, which are provided for reference and illustration only, and are not intended to limit the present invention.
[0022] figure 1 A flowchart showing a preferred embodiment of the barcode decoding method of the present invention. like figure 1 As shown, in step 101, a feature search is performed on the barcode image to determine the barcode area.
[0023] In step 102, multiple pixel points are covered by multiple sampling grids.
[0024] In step 103, grayscale extraction is performed on multiple pixel points covered by multiple sampling grids to obtain the grayscale value of each pixel point.
[0025] In step 104, the gray value of the center of the sampling grid is extracted by interpolation operation.
[0026] In step 105, the gray value at the center of the sampling grid is mapped to the sampling image in a certain orde...
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The invention discloses a binarization method used in bar code processing, which samples and interpolates a pixel point of a bar code image to form a sampling image. The method comprises the following steps of: a, covering a plurality of sampling grids on a plurality of adjacent pixel points used in the bar code processing; b, performing gray extraction on the plurality of adjacent pixel points covered by the sampling grids to acquire gray values of the plurality of adjacent pixel points; c, determining the gray values of central points of the sampling grids by using interpolation operation; d, mapping the gray values of the centers of the sampling grids to a sampling image in turn; and e, judging whether to map the gray values of the centers of all the sampling grids to the sampling image, if the judgment result is 'no', executing the step d, and if the judgment result is 'yes', performing binarization processing on the sampling image. The method can reduce the bar code image processing time, reduce error probability and reduce the load of a system.
Description
【Technical field】 [0001] The invention relates to the field of electronic science and technology, in particular to a barcode decoding method and a binarization method thereof. 【Background technique】 [0002] Bar code technology is an emerging technology developed on the basis of computer technology and information technology that integrates coding, printing, identification, data collection and processing. Barcode technology is widely used in business, library management, warehousing, post and telecommunications, transportation and industrial control due to its advantages of fast, accurate, reliable and low cost, and is bound to play an important role in the emerging "Internet of Things" applications. role. [0003] Currently widely used barcodes include one-dimensional barcodes and two-dimensional barcodes. A one-dimensional barcode, also known as a linear barcode, is composed of multiple "bar" and "space" units arranged in parallel, and the barcode information is expresse...
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IPC IPC(8): G06K7/10
Inventor 陈文传俞开斌陈瑞琳
Owner NEWLAND DIGITAL TECH CO LTD