Evaluation of Relative Focus Map Based Image Indexing

This paper deals with performance evaluation of image retrieval based on our previously introduced blind deconvolution-based automatic relative focus map estimation method. After a short introduction into the focus extraction approach and its application for image indexing, we will concentrate on evaluating the effectiveness of the retrieval, also compared to sharpness-based retrieval using traditional edge or frequency information. We will show that relative focus maps can be efficiently used for retrieving similarly focused images and thus it is a viable addition to traditional image indexing features.