Download presentation
Presentation is loading. Please wait.
Published byKalyn Otis Modified over 10 years ago
1
Relevance Feedback A relevance feedback mechanism for content- based image retrieval G. Ciocca, R. Schettini 1999
2
Weight Each query is different – Some interest in color – Some interest in shape – Some interest in a specific region Associate each feature with a weight
3
Image segmentation User may interest only in a particular region Divide image into different region Advantage – we can capture region of interest Disadvantage – the feature vector is longer
4
Query Modification The query image is not the target image user want We modify the query base on the feedback
5
Weight updating thro feedback How to estimate user s interest from feedback Base on the relevant images – If color of relevant images varies, the user might not interest in color – If feature vector of upper right corner are close, user might interest in that area
6
Overall Process A heuristic used in the 1 st iteration. If user makes a query that is similar to previous query, the weight vector will be used. Reduce time need to adapt the similarity measure
Similar presentations
© 2024 SlidePlayer.com Inc.
All rights reserved.