Object retrieval with large vocabularies and fast spatial matching

@article{Philbin2007ObjectRW,
  title={Object retrieval with large vocabularies and fast spatial matching},
  author={James Philbin and Ondřej Chum and Michael Isard and Josef Sivic and Andrew Zisserman},
  journal={2007 IEEE Conference on Computer Vision and Pattern Recognition},
  year={2007},
  pages={1-8}
}
In this paper, we present a large-scale object retrieval system. [] Key Method To address this problem we compare different scalable methods for building a vocabulary and introduce a novel quantization method based on randomized trees which we show outperforms the current state-of-the-art on an extensive ground-truth. Our experiments show that the quantization has a major effect on retrieval quality. To further improve query performance, we add an efficient spatial verification stage to re-rank the results…

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