The experimental results reveal that the ratio of recognition by AMIs,which achieves 95%,is much superior to that of Hu moment invariants(HMIs). The performance of the proposed method is better than that of HMIs.

• 试验结果表明:采用仿射不变矩方法的轴心轨迹识别率达到95%25；明显高于Hu氏不变矩的识别率；仿射不变矩具有比Hu氏不变矩更好的轴心轨迹识别能力.