@article{Zheng2017sift, author = {Liang Zheng and Yi Yang and Qi Tian}, title = {{SIFT} Meets {CNN}: A Decade Survey of Instance Retrieval}, journal = {{IEEE} Transactions on Pattern Analysis and Machine Intelligence}, doi = {10.1109/tpami.2017.2709749}, url = {https://doi.org/10.1109/tpami.2017.2709749}, year = {2017}, publisher = {{IEEE}} }