工业ECC200码快速定位算法研究

A Fast Position Algorithm for Industrial ECC200 Code

二维码优点众多,被广泛应用于各行业特别是工业生产领域,但由于工业环境差、工业生产产品有效二维码比例小、产品材质导致的二维码打印显示图案不同等原因,采集到的二维码图像存在光照不均或无法检测等情况,阻碍二维码优点的有效发挥。鉴于此,以工业ECC200码为研究对象,首先采用多尺度Retinex算法对因光照因素造成的异常图像进行处理,然后采用图像平面漫游的方式对复杂背景下的ECC200码进行定位,对圆点式ECC200码使用模板匹配的方式进行精确定位,从而提高识别准确率和识别时间。与常见二维码识别软件进行对比实验表明,提出的方法在识别时间和识别率上都更胜一筹。

The many advantages of two-dimensional code is the main reason why it is widely used in various industries, especially in industrial production. However, due to poor industrial environment, industrial products effective two-dimensional code is small, the different two-dimensional display caused by the product material, the two-dimensional code image is uneven illumina- tion, or can not detect ,which hinder the advantages of the effective play of two-dimensional code. In this paper, the industrial ECC200 code is used as the study object. Firstly, the multi-scale Retinex algorithm is used to deal with the abnormal image caused by the illumination factor. Then, the ECC200 code in the complex background is located by image plane roaming. The dotted ECC200 codes are located using template matching to improve recognition accuracy and recognition time. Compared with the common two-dimensional code recognition softwares, it is shown that the method proposed in this paper is superior to recog- nition time and recognition rate.