Enhancing instance search with weak geometric correlation consistency

This weak geometric correlation consistency can be used to effectively eliminate inconsistent feature matches in instance retrieval and can be applied to all candidate images at a low computational cost. Experimental results on three standard evaluation benchmarks show that the proposed approach results in a substantial performance improvement when compared with other state-of-the-art methods. In addition, the evaluation results from participating in the Instance Search Task in the TRECVid evaluation campaign also suggest that our proposed approach enhances retrieval performance for large scale video collections.