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Method for sampling sub-resolution of barcode image

A sub-resolution and barcode technology, applied in the field of barcodes, can solve the problems of increasing decoding time, increasing the probability of errors, increasing system load, etc.

Inactive Publication Date: 2010-11-10
NEWLAND DIGITAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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

Method used

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  • Method for sampling sub-resolution of barcode image
  • Method for sampling sub-resolution of barcode image
  • Method for sampling sub-resolution of barcode image

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Embodiment Construction

[0014] 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.

[0015] figure 1 A flow chart showing a preferred embodiment of the barcode image sub-resolution sampling method of the present invention. Such as figure 1 As shown, in step 101, a feature search is performed on the barcode image to determine the barcode area.

[0016] In step 102, a plurality of sampling grids are used to respectively cover a plurality of pixel points.

[0017] In step 103, grayscale extraction is performed on multiple pixel points covered by each sampling grid to obtain the grayscale value of each pixel point.

[0018] In step 104, the gray value of the center of the sampling grid is extracted by interpolation operation.

[0019] In step 105, the gray value at the center of the sampling grid i...

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Abstract

The invention provides a method for sampling the sub-resolution of a barcode image, which comprises: covering a plurality of adjacent pixel points in the barcode image by using a plurality of sampling grids respectively; extracting gray values of the plurality of adjacent pixel points covered by each sampling grid to obtain the gray values of a plurality of adjacent pixel points; determining the gray value of the center of each sampling grid by using interpolation; and mapping the gray values of the centers of the sampling grids onto a sampled image in turn. When the method is used, the barcode image processing time is reduced, error rate is lowered and the system load is reduced.

Description

【Technical field】 [0001] The invention relates to the technical field of barcodes, in particular to a sub-resolution sampling method of a barcode image. 【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 expressed by the different widt...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/10
Inventor 陈文传邱有森刘荣生许猛鸿
Owner NEWLAND DIGITAL TECH CO LTD