为改善激光扫描投影系统在扫描复杂图形时由于扫描频率远小于20 Hz而引起的严重闪烁问题，基于图论理论将Fleury算法应用于激光扫描投影路径规划，并针对该算法无法优化非欧拉路径的局限性，提出了改进的Fleury算法。应用MATLAB对上述算法的扫描路径优化效果进行仿真分析，并应用到已有的激光扫描投影系统中进行实验，实验结果表明：基于改进的Fleury算法的激光扫描投影路径优化技术可以使激光扫描投影频率提升至20 Hz左右，有效解决频闪问题，提高绘制图像的质量，从而提升自主研发激光扫描投影仪器的实际应用价值。

In order to improve the serious flickering problem of the laser scanning projection system caused by the scanning frequency much smaller than 20 Hz when scanning complex graphics,we applied the Fleury algorithm to the laser scanning projection path planning based on the graph theory, and proposed a novel improved Fleury algorithm for the limitations that the previous algorithm could not optimize the non-Eulerian paths.We simulated and analyzed the scanning path optimization effects of the above algorithm by MATLAB, and applied it to the existing laser scanning projection system for experiment furthermore.Experiments results show that, the laser scanning projection path optimization technology based on the improved Fleury algorithm can increase the frequency to around 20 Hz, effectively solve the flickering problem,it can also improve the quality of the drawn graphics, thus enhancing the practical application value of the self-developed laser scanning projection instrument.