2A. Bosch, X. Muonz, and R. Marti, "A review: Which is the best way to organize/classify images by content?," Image and Vision Computing, vol. 25, pp. 778-791, 2007.
3L. Fei-Fei and P. Perona, "A bayesian hierarchical model for learning natural scene categories," presented at IEEE Computer Society Conference on Computer Vision and Pattern Recognition, Washington DC, USA, 2005.
4S. Lazebnik, C. Schmid, and J. Ponce, "Beyond bags of features: Spatial pyramid matching for recognizing natural scene categories," presented at IEEE Computer Society Conference on Computer Vision and Pattern Recognition, New York, 2006.
5J. Fan, Y. Gao, H. Luo, and G. XU, "Statistical modeling and conceptualization of natural images," PatternRecognition, vol. 38, pp. 865-885, 2005.
6J. Vogel and B. Schiele, " Natural scene retrieval based on a semantic modeling step," presented at International Conference on Image and Video Retrieval, Dublin, Ireland, 2004.
7J. Vogel and B. Schiele, " Semantic Modeling of Natural Scenes for Content-Based Image Retrieval," International Journal of Computer Vision, vol. 72, pp. 133-157, 2007.
8A. Mojsilovic, J. Gomes, and B. Rogowitz, "Isee: Perceptual features for image library navigation," presented at SPIE Human vision and electronic imaging, San Jose, California, 2002.
9T. V. Pham and A. W. M. Smeulders, " Learning spatial relations in object recognition," Pattern Recognition Letters, vol. 27, pp. 1673-1684, 2006.
10Y. Li and T. R. Bretschneider, "Semantic-Sensitive Satellite Image Retrieval," IEEE Trans. Geosci. Remote Sens. , vol. 45, pp. 853-860, 2007.