通过对Canny算法进行改进，提出了一种基于量子行为的微粒群优化算法的边缘提取算法。改进算法对噪声抑制效果明显，能够删除伪边缘，得到精确的边缘。实验结果表明，该算法在保证实时性的同时，具有很好的检测精度和准确度。

To make some improve to the canny algorithm，we bring forward an improved edge detection algorithm based on an improved particle swarm optimization algorithm．The improved algorithm can enhance the capability of suppressing noise，delete false edges and obtain exact edges．Experimental results indicate the feasibility and validity of the improved algorithm．