Lattice code positioning method and system

A dot matrix code and binary image technology, applied in the information field, can solve problems that affect the accuracy of decoding and cannot perform pre-positioning, and achieve the effect of improving the accuracy of decoding

Inactive Publication Date: 2019-09-17
BEIJING VISION BRILLIANCE TECH CO LTD
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Problems solved by technology

[0003] However, when the background pattern of the image comprising the dot matrix code is complex or the image quality is poor, some non-code points in the image background will be misjudged as code points w

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  • Lattice code positioning method and system

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Embodiment Construction

[0062] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0063] The terms "first" and "second" in the specification and claims of the present invention and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "comprising" and "having", and any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or apparatus comprising a series of steps or units is not defined by listed steps or u...

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Abstract

The invention discloses a lattice code positioning method and system. The lattice code positioning method comprises the steps: carrying out preset binarization processing on a grayscale image of a target image, wherein the preset binarization processing represents the binarization processing of a global iteration threshold adopted according to the definition of the grayscale image, and/or the self-adaptive local binarization processing; performing filtering processing on the binary image; traversing the binarized image after filtering processing according to the determined sliding window, calculating the average energy density of a selected area of the sliding window, and determining a candidate area according to an energy density threshold value; calculating the average energy density of the corroded candidate areas, and determining a plurality of first areas according to an energy density threshold; calculating the energy density among the sub-frames of the first area and the overall energy density of the first area, and determining a target area; and carrying out merging processing on the target area to obtain a target dot matrix code area. Different dot matrix positioning requirements can be met, and the decoding accuracy is improved.

Description

technical field [0001] The invention relates to the field of information technology, in particular to a dot matrix code positioning method and system. Background technique [0002] At present, the main process of two-dimensional code recognition is to align the scanning frame with the two-dimensional code by calling the WeChat code scanning interface, and directly read the code area in the frame according to certain reading rules. For the reading method of the dot matrix code on the WeChat applet, it does not call the WeChat QR code reading frame for pre-positioning. The reading needs to find the code area in the entire image, process the image, and convert all the dot matrix in the image. The code points are marked, and then the examples between each point are calculated, so as to obtain the dot matrix code pair, and the corresponding code value is calculated through the arrangement of the dot matrix code pair, so as to achieve the purpose of decoding. [0003] However, wh...

Claims

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Application Information

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IPC IPC(8): G06K7/14
CPCG06K7/1443G06K7/146G06K7/1417
Inventor 刘春祥
Owner BEIJING VISION BRILLIANCE TECH CO LTD
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