Author : D.Kiran 1
Date of Publication :14th November 2017
Abstract: Content-Based Image Retrieval (CBIR) plays a significant role in the image processing field. Based on image content, CBIR extracts images that are relevant to the given query image from large image archives. The effective utilization of data stored in digital library is possible through effective image indexing and retrieval techniques. Vector Quantization (VQ) method appears to be a good candidate for image indexing in CBIR, however, this method is inefficient to work on large-scale image databases. Sparse Vector Quantization (SPQ) is employed to encode the high-dimensional vector of image features, where the sparse coding technique is introduced into approximate nearest neighbor search using soft assignment technique, apart from hard assignment employed VQ. In addition, the computation of similarity amongst the query and target image using simple Euclidean Distance is also very expensive. Thus, the Genetic Algorithm-based similarity measure is performed between the query image features and the database image features in Sparse Vector Quantization. Hence, from the proposed Sparse Vector Quantization and GeneticAlgorithm-based similarity measure Image Indexing technique, the database images that are relevant to the given query image are retrieved. The performance efficiency of the proposed approach is analyzed using three image datasets such as Corel-1K, Corel-10K and Oxford-5K and showed that this approach has good precision-recall curve and maximum f-score values when compared to the existing compared CBIR approaches
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