基于形状特征和用户反馈的商标图像检索技术

针对二值商标图像，用Hu不变矩和边界方向直方图分别描述形状，采用等级度量方法进行特征融合并匹配，通过用户反馈算法达到检索的目的。实验表明，这种方法符合人的视觉语义，能很好地进行商标图像检索。

Trademark Images Retrieval Based on Shape Feature and Users' Feedback Algorithm

We applies Hu invariant moments and edge direction histogram in the binary trademark images to extract the shapes of objects.Then,a similarity measure called grade measure is provided to conduct the matching process based on the rank of the feature distances.Finally,a feedback algorithm to determine the weight of each feature according to the users' response was presented.From the experiences,it is obvious that this method is consistent with human's vision semanteme,and do well in trademark images retrieval.