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Reading device and method capable of identifying barcodes made of various materials and color barcodes

A color barcode and barcode technology, applied in the field of barcode reading, can solve problems such as difficult decoding, poor contrast of barcode images, and limited field of view

Active Publication Date: 2020-07-28
福州符号信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The barcode image collected by the camera is sent back to the processor for decoding. For color barcodes and barcodes made of special media, the barcode image contrast is poor and the depth of field is limited. When the processor decodes, decoding difficulties or even decoding failures will occur.

Method used

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  • Reading device and method capable of identifying barcodes made of various materials and color barcodes
  • Reading device and method capable of identifying barcodes made of various materials and color barcodes
  • Reading device and method capable of identifying barcodes made of various materials and color barcodes

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Experimental program
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Embodiment 1

[0040] see figure 1 and figure 2 , a reading device capable of recognizing barcodes of various materials and color barcodes, comprising a processor 1, an imaging module 2, and a supplementary light module 3, wherein the supplementary light module 3 includes a plurality of supplementary lights 31, the The fill light 31 includes white and non-white fill lights, such as red fill light, blue fill light, etc.; instructions are stored in the processor 1, and the processor 1 loads the instructions and executes the fill light 31 as follows: Setting steps: the processor 1 controls the fill light module 3 to light the white fill light 31; the imaging module 2 collects the current barcode to obtain a digitized barcode image, and then converts the barcode image into a grayscale image and sends it to to processor 1, such as Figure 6 As shown, it is the grayscale image of the barcode image collected under the white fill light with the black barcode on the green background. The barcode ...

Embodiment 2

[0050] In this embodiment, on the basis of the first embodiment, the brightness setting, adjustment and locking of the supplementary light 31 are added. Therefore, in this embodiment, the barcode reading device can not only adaptively select the color of the supplementary light, but also automatically select the color of the supplementary light. Adapt to adjust the brightness of the fill light 31, and greatly improve the ability of the barcode reading equipment to cope with various flexible and changeable application scenarios.

[0051] see image 3 The brightness setting of the supplementary light 31 is completed while performing the setting step of the supplementary light 31, specifically: the brightness value corresponding to the supplementary light 31 of each color is recorded in the supplementary light mapping table, that is, the The above-mentioned supplementary light mapping table establishes the mapping relationship between the grayscale range value, the color of the s...

Embodiment 3

[0057] see figure 1 and figure 2 , a reading method capable of identifying multiple material barcodes and color barcodes, the method adopts a processor 1, an imaging module 2, and a supplementary light module 3, and the supplementary light module 3 includes a plurality of supplementary lights 31, The supplementary light 31 includes white and non-white supplementary lights, such as red supplementary light 31, blue supplementary light 31, etc.; instructions are stored in the processor 1, and the processor 1 loads the instructions and executes them as follows Steps for setting up the fill light 31: the processor 1 controls the fill light module 3 to turn on the white fill light 31; the imaging module 2 collects the current barcode to obtain a digitized barcode image, and then converts the barcode image to gray degree image and sent to Processor 1, such as Figure 6 As shown, it is the grayscale image of the barcode image collected under the white fill light with the black barc...

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Abstract

The invention relates to a reading device capable of identifying bar codes of various materials and color bar codes, which comprises a processor, an imaging module and a light supplementing lamp module, and is characterized in that the light supplementing lamp module comprises a plurality of light supplementing lamps, and the light supplementing lamps comprise white and non-white light supplementing lamps; the processor controls the light supplementing lamp module to lighten a white light supplementing lamp; the imaging module collects a current bar code to obtain a digitized bar code image, and then sends the digitized bar code image to the processor; the processor queries a fill-in light mapping table according to the gray value characteristics of the gray image, and determines the colorof the fill-in light suitable for the current type of bar code; establishing a mapping relationship between the gray scale range value and the color of the fill-in light in the fill-in light mappingtable; the processor controls the light supplementing lamp module to lighten the light supplementing lamp corresponding to the color, and light supplementing lamp setting is completed; and the bar code reading device starts to collect the bar code after the light supplement lamp is set. By automatically adjusting the color and the brightness of the light supplementing lamp, the depth-of-field range and the decoding capability of the bar code reading equipment are improved.

Description

technical field [0001] The invention relates to a reading device and a recognition method capable of recognizing barcodes of various materials and color barcodes, and belongs to the field of barcode reading. Background technique [0002] Existing barcodes mainly have one-dimensional barcodes and two-dimensional barcodes. A one-dimensional barcode is a graphic identifier that arranges multiple bars and spaces of different widths according to certain coding rules to express a set of information. Common one-dimensional barcodes such as barcodes have a large difference in reflectivity parallel lines pattern of bars and spaces. A two-dimensional code is a black and white graphic that is distributed on a plane (two-dimensional direction) according to certain rules to record information with a specific geometric figure. With the rapid development of barcode technology, barcode has been more and more widely used in various fields. The color of the barcode and the color of the bar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/14G06K7/10
CPCG06K7/146G06K7/1408G06K7/10821Y02B20/40
Inventor 吴文彬高炳鑫刘昌盛
Owner 福州符号信息科技有限公司
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