Robust Feature Encoding with Neighborhood Information for Image Classification
Bingyuan Liu; Jing Liu; Chunjie Zhang; Maolin Chen; Hanqing Lu
2013
会议名称International Conference on Image and Graphics
会议录名称Proceedings of the Seventh International Conference on Image and Graphics
会议日期July 26-28, 2013
会议地点Qingdao, China
摘要The bag of visual words (BoW) model is one of the most successful model in image classification task. However, the major problem of the BoW model lies in the determination of visual words, which consists of codebook training and feature encoding phases. The traditional K-means and hard-assignment method completely ignore the structure of the local feature space, leading to high loss of information. To alleviate the information loss, we propose to incorporate the neighborhood information of the features into the codebook training and feature encoding process. We firstly propose a model to roughly measure the influence of the distribution of the neighboring features. Then we combine the proposed model with the traditional K-means method in a probability perspective to train the visual codebook. Finally, in the feature encoding phase, both the hard-assignment and soft-assignment method are improved with the proposed neighborhood information term. We investigate our method on two popular datasets: 15-Scenes and Caltech-101. Experimental results demonstrate the effectiveness of our proposed method.
关键词Image Classification Feature Encoding
文献类型会议论文
条目标识符http://ir.ia.ac.cn/handle/173211/13445
专题模式识别国家重点实验室_图像与视频分析
通讯作者Jing Liu
推荐引用方式
GB/T 7714
Bingyuan Liu,Jing Liu,Chunjie Zhang,et al. Robust Feature Encoding with Neighborhood Information for Image Classification[C],2013.
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