Chinese-sensible code locating method based on EWMA model

Abstract

The invention concretely relates to a Chinese-sensible code locating method based on an EWMA model, belongs to the technical field of two-dimensional code identification, and aims at providing a Chinese-sensible code position quick and accurate locating method. The locating method concretely comprises the steps that Chinese-sensible codes are scanned line by line in a transverse direction and a longitudinal direction and graphs meeting the proportion of 3:1:1:1:1 and 1:1:1:1:3 are searched by using the EWMA model, and the coordinates and the length of the graphs of which the proportion is 3 in the graphs meeting the proportion and then the standard feature proportion type are saved; as for the horizontal coordinates, other horizontal coordinates are searched in the saved length range, then a straight line formed by all the horizontal coordinate points obtained in the process is calculated by using an RANSAC algorithm, the same processing is performed on the vertical coordinates and then another straight line is obtained, the intersection point of the two straight lines is the vertex of the area and the coordinates of the center point are calculated; and combination of four points is performed on the coordinates of the center point, and the four points capable of forming a square are calculated. The position and the range of the Chinese-sensible codes and the length of the data module are calculated. The method is suitable for quickly locating the position meeting the Chinese-sensible code image searching graph under the complex environment.

Description

technical field [0001] The invention specifically relates to a Chinese Sensible code positioning method based on an EWMA (exponentially weighted moving average control map) model, and belongs to the technical field of two-dimensional code recognition. Background technique [0002] Hanxin Code is my country's "Tenth Five-Year Plan" national major science and technology plan, and it is the first national standard for two-dimensional codes with completely independent intellectual property rights that breaks the monopoly of foreign countries in two-dimensional code technology. Hanxin code has been used more and more in logistics, library management and other fields. However, due to the complexity of the application environment and the influence of other external factors, it is difficult to guarantee the efficiency of Chinese Sensible code recognition. Detecting the image-finding patterns of Chinese Sensible codes is one of the very important steps in identifying Chinese Sensibl...

AI Technical Summary

Problems solved by technology

[0004] Therefore, in order to solve the problem that Chinese Sensible codes are difficult to quickly identify in the prior art, the present invention provides a Chinese Sensible code positioning method based on the EWMA model that can quickly and accurately locate the position of Chinese Sensible codes in a complex environment

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