应用于方阵式DM码定位的图像分割技术研究

Research on Image Segmentation Technology Applied to Square Matrix DM Code Location

文章所研究的图像分割过程主要分为预处理、粗定位、精定位三部分;预处理的目的主要是减少图像信息量和提升图像质量;粗定位主要分图像分块、候选区域标记、区域生长;候选区域标记通过Scharr边缘检测算子计算DM码梯度方向和梯度幅值,通过梯度方向和梯度幅值进行统计直方图计算,确定候选区域;区域生成将在候选区域进行种子生长,完成粗定位;精定位部分结合由外向里,由里向外进行扫描完成DM更精确的定位。

The image segmentation process studied in this paper is mainly divided into three parts:preprocessing,coarse positioning and fine positioning;the main purpose of preprocessing is to reduce the amount of image information and improve the image quality;the coarse positioning is mainly divided into image segmentation,candidate region labeling and region growing;the candidate region labeling calculated the DM code gradient direction and gradient amplitude by Scharr edge detection operator,and the candidate region is determined by statistical histogram calculation of gradient direction and gradient amplitude;in the region generation,seed growth will be carried out in the candidate region to complete the coarse positioning;in the fine positioning part,scanning from the outside in and from the inside out will be combined to complete the more accurate positioning of DM.