B. G. Prasad, K. K. Biswas and S. K. Gupta,
Region-based image retrieval using integrated color,
shape, and location index,
Computer Vision and Image Understanding (special issue on Colour for Image Indexing and Retrieval),
94, 1-3, pp. 193-233, April/June 2004.A technique to retrieve images by region matching using a combined feature index based on color, shape, and location is presented within the framework of MPEG-7. Dominant regions within each image are indexed using integrated color, shape, and location features. Various combinations of regions are also indexed. The resulting indices and related metadata are stored in a Hash structure, where similar images tend to form clusters. The retrieval process is non-cascading and images can be retrieved based on color, shape or location and also based on a combined color-shape-location index. Results obtained show that retrieval effectiveness increases in non-cascaded region-based querying by combined index.