基于二阶梯度图的Canny检测边缘修补方法

A Patching Method for Edges Detected by Canny Detector Based on Two-step Gradient Image

针对工业标牌压印凹凸字符与背景间没有色差造成的二值化效果不理想,本文采用Canny检测器提取凹凸字符的边缘,为修补产生的边缘断裂提出了基于二阶梯度图的边缘修补方法,采用边缘跟踪技术成功地实现了对Canny检测缺失边缘的修补,从而使字符边缘变得完整。实验表明,采用该方法,取得了非常理想的效果。

The image binarization effect is unsatisfactory because there are no chromatic differences between the protuberant characters and the background in the industry tag. In this paper,the Canny detector is used to detect the edges of protuberant charactors. A method based on two-step gradient image is adopted to patch the break edges. And Edge-Traching technology is successfully used to patch,the flaw edges detected by Canny operator to make them integrity. The experiment proved that the proposed method has gotten ideal effect.