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Data Compression Conference (DCC'05)
Minimum Distortion Color Image Retrieval Based on Lloyd-Clustered Gauss Mixtures
Snowbird, Utah
March 29-March 31
ISBN: 0-7695-2309-9
Sangoh Jeong, Stanford University, CA
Robert M. Gray, Stanford University, CA
We consider image retrieval based on minimum distortion selection of features of color images modelled by Gauss mixtures. The proposed algorithm retrieves the image in a database having minimum distortion when the query image is encoded by a separate Gauss mixture codebook representing each image in the database. We use Gauss mixture vector quantization (GMVQ) for clustering Gauss mixtures, instead of the conventional expectation-maximization (EM) algorithm. Experimental comparison shows that the simpler GMVQ and the EM algorithms have close Gauss mixture parameters with similar convergence speeds. We also provide a new color-interleaving method, reducing the dimension of feature vectors and the size of covariance matrices, thereby reducing computation. This method shows a slightly better retrieval performance than the usual color-interleaving method in HSV color space. Our proposed minimum distortion image retrieval performs better than probabilistic image retrieval.
Citation:
Sangoh Jeong, Robert M. Gray, "Minimum Distortion Color Image Retrieval Based on Lloyd-Clustered Gauss Mixtures," dcc, pp.279-288, Data Compression Conference (DCC'05), 2005
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