Packing and Padding: Coupled Multi-index for Accurate Image Retrieval

CVPR 2014 Liang ZhengShengjin WangZiqiong LiuQi Tian

In Bag-of-Words (BoW) based image retrieval, the SIFT visual word has a low discriminative power, so false positive matches occur prevalently. Apart from the information loss during quantization, another cause is that the SIFT feature only describes the local gradient distribution... (read more)

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