Open Access Open Access  Restricted Access Subscription or Fee Access

Color Based Image Retrieval using Amendment of Block Truncation Coding with YCbCr Color Space

H. B. Kekre, Sudeep D. Thepade

Abstract


Block Truncation Coding (BTC) based features is one of the CBIR methods proposed using color features of image. The approach basically considers red, green and blue planes of image together to compute feature vector. Here we have boosted this BTC based CBIR as BTC-YCbCr and Spatial BTC- YCbCr. Here YCbCr color space is considered. In BTC- YCbCr feature vector is computed by considering Y, Cb and Cr planes of the image independently. While in Spatial BTC- YCbCr , the feature vector is composed of four parts. Each part is representing the features extracted from one of the four non overlapping quadrants of the image. The new proposed methods are tested on the database of 1000 images and the results show that the precision is improved in Spatial BTC- YCbCr and recall is better in BTC- YCbCr. If both precision and recall are considered together Spatial BTC- YCbCr outperforms the other methods discussed in the paper.

Keywords


CBIR, BTC, RGB Color Space, YCbCr Color Space, Spatial BTC.

Full Text:

PDF


Disclaimer/Regarding indexing issue:

We have provided the online access of all issues and papers to the indexing agencies (as given on journal web site). It’s depend on indexing agencies when, how and what manner they can index or not. Hence, we like to inform that on the basis of earlier indexing, we can’t predict the today or future indexing policy of third party (i.e. indexing agencies) as they have right to discontinue any journal at any time without prior information to the journal. So, please neither sends any question nor expects any answer from us on the behalf of third party i.e. indexing agencies.Hence, we will not issue any certificate or letter for indexing issue. Our role is just to provide the online access to them. So we do properly this and one can visit indexing agencies website to get the authentic information.