A two-level relevance feedback mechanism for image retrieval

Pei Cheng Cheng*, Been Chian Chien, Hao Ren Ke, Wei Pang Yang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


Content-based image retrieval (CBIR) is a group of techniques that analyzes the visual features (such as color, shape, texture) of an example image or image subregion to find similar images in an image database. Relevance feedback is often used in a CBIR system to help users express their preference and improve query results. Traditional relevance feedback relies on positive and negative examples to reformulate the query. Furthermore, if the system employs several visual features for a query, the weight of each feature is adjusted manually by the user or system predetermined and fixed by the system. In this paper we propose a new relevance feedback model suitable for medical image retrieval. The proposed method enables the user to rank the results in relevance order. According to the ranking, the system can automatically determine the importance ranking of features, and use this ranking to automatically adjust the weight of each feature. The experimental results show that the new relevance feedback mechanism outperforms previous relevance feedback models.

Original languageEnglish
Pages (from-to)2193-2200
Number of pages8
JournalExpert Systems with Applications
Issue number3
Publication statusPublished - 2008 Apr
Externally publishedYes


  • Content-based image retrieval
  • Image database
  • Relevance feedback

ASJC Scopus subject areas

  • General Engineering
  • Computer Science Applications
  • Artificial Intelligence


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