Presentation is loading. Please wait.

Presentation is loading. Please wait.

Relevance Feedback A relevance feedback mechanism for content- based image retrieval G. Ciocca, R. Schettini 1999.

Similar presentations


Presentation on theme: "Relevance Feedback A relevance feedback mechanism for content- based image retrieval G. Ciocca, R. Schettini 1999."— Presentation transcript:

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


Download ppt "Relevance Feedback A relevance feedback mechanism for content- based image retrieval G. Ciocca, R. Schettini 1999."

Similar presentations


Ads by Google