小波和仿射不变矩的目标特征提取方法研究

不变矩是目标识别中重要而有效的特征提取方法。利用小波矩具有的多尺度、平移和旋转不变性进行特征提取,有较高的识别率。但当拍摄角度不同,图像发生形变,识别效果降低。针对这一问题,提出了一种将小波矩和仿射不变矩相结合用于目标特征新的提取方法,并验证本方法的鲁棒性更高,识别效果更好。

Method of Feature Extraction of the Target Based on Wavelet Moment and Affine Invariant Moment

The same moment is an important target recognition and effective method of fea- ture extraction. By using wavelet multi-scale, the moment has the translation and rotation invariant for feature extraction, and high recognition rate. But when the shooting Angle changes,image is deformed, recognition effect would be reduced. A new extraction method for target features based on wavelet moment and affine invariant moment is proposed. The robustness and copacity of discerment are proved to be higher.