Formal Models and Hybrid Approaches for Efficient Manual Image Annotation and Retrieval

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Abstract

Although important in practice, manual image annotation and retrieval has rarely been studied by means of formal modeling methods. In this chapter, the authors propose a set of formal models to characterize the annotation times for two commonly-used manual annotation approaches, that is, tagging and browsing. Based on the complementary properties of these models, the authors design new hybrid approaches, called frequency-based annotation and learning-based annotation, to improve the efficiency of manual image annotation as well as retrieval. Both our simulation and experimental results show that the proposed algorithms can achieve up to a 50% reduction in annotation time over baseline methods for manual image annotation, and produce significantly better annotation and retrieval results in the same amount of time.

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