Research on pseudo-relevance feedback and clustering-based image retrieval

A novel auto relevance feedback image retrieval method called the outer auto relevance feedback(OARF) is proposed based on the pseudo-relevance feedback technology.This method selects positive images according to the feature distance of images from the initial retrieval results using the K-means clustering approach.Retrieve images to each of the positive images which cover more objective features.Experimental results demonstrate that the OARF can release users' burdens in retrieval and improve the retrieval performance of the original algorithms greatly and then narrows the "semantic gap".