Bar code positioning method and bar code detection device

A positioning method and a technology of a positioning device, which are applied in the direction of electromagnetic radiation induction, etc., can solve problems such as blurring, inaccurate image focus, positioning barcode positions, etc., and achieve the effect of accurate positioning and lower requirements

Inactive Publication Date: 2013-04-10
WUXI AIDINGGE INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For camera modules with lower configuration, such as the camera modules that exist in a large number of low-end mobile phones, because they use fixed-focus lenses, the captured images are often blurred due to inaccurate focus
Like this, it is difficult for the usual barcode positioning method to locate the position of the barcode in this type of barcode image

Method used

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  • Bar code positioning method and bar code detection device
  • Bar code positioning method and bar code detection device
  • Bar code positioning method and bar code detection device

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Embodiment Construction

[0033] In order to make the above objectives, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] The detailed description of the present invention is mainly presented through procedures, steps, logic blocks, processes or other symbolic descriptions, which directly or indirectly simulate the operation of the technical solutions of the present invention. Those skilled in the field use these descriptions and statements here to effectively introduce the nature of their work to other technical personnel in the field.

[0035] The “one embodiment” or “an embodiment” referred to herein means that a specific feature, structure, or characteristic related to the embodiment can be included in at least one implementation of the present invention. The appearances of "in one embodiment" in different places in this specificat...

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PUM

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Abstract

The invention discloses a bar code positioning method and a bar code detection device. The bar code positioning method includes searching at least two left boundary points and at least two right boundary points in an image, and identifying the left boundary and the right boundary of the bar code based on the searched left boundary points and right boundary points. The left boundary points and the right boundary points of the bar code are identified through grey level changes of pixels. Therefore, the demand on image definition is lowered, and position is more accurate.

Description

【Technical Field】 [0001] The invention relates to the field of linear barcode recognition, in particular to a method and device for locating the position of a barcode in an image. 【Background technique】 [0002] Linear barcodes are also often called 1D barcodes, which are a graphic identifier that arranges multiple black bars and blanks of varying widths according to a certain coding rule to express a group of information. At present, it is widely used in industrial and civil fields. Common linear barcodes include Universal Product Code (UPC code for short), European Article Number (EAN code for short), Japanese Article Number (JAN code for short), Code 25, Code 39, Code 128 and so on. [0003] Commonly used barcode scanning equipment is usually composed of light source (such as laser), optical lens, photosensitive device (such as CCD, CMOS, etc.), decoding logic circuit, I / O interface and other components. In simple terms, the light source projects light onto the bar code, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/10
Inventor 陈凌
Owner WUXI AIDINGGE INFORMATION TECH
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