Title :
A compact wavelet index for retrieval in image database
Author :
Albanesi, Maria Grazia ; Ferretti, Marco ; Giancane, Alessandro
Author_Institution :
Dipt. di Inf. e Sistemistica, Pavia Univ., Italy
Abstract :
In this paper, we present an algorithm to build an index for image retrieval that heavily exploits the wavelet multi-resolution decomposition. The index can be constructed using alternative levels in the multi-resolution decomposition; it is based on the correlation between the scaled-down approximation image and its reconstruction obtained using only one level in the hierarchy of detail images. The method has been tested on RBG and YUV color spaces on a database of 167 images with good results. The effect of white Gaussian noise is negligible, because the wavelet approximation smooths off this kind of noise. The method is more sensitive to geometric distortion noise
Keywords :
Gaussian noise; correlation methods; database indexing; image colour analysis; image reconstruction; image resolution; image retrieval; smoothing methods; visual databases; wavelet transforms; white noise; RBG color spaces; YUV color spaces; compact wavelet index; correlation; detail images; geometric distortion noise; image database; image reconstruction; image retrieval; multi-resolution decomposition; scaled-down approximation image; smoothing; white Gaussian noise; Colored noise; Digital images; Image databases; Image reconstruction; Image resolution; Image retrieval; Indexes; Information retrieval; Multiresolution analysis; Spatial databases;
Conference_Titel :
Image Analysis and Processing, 1999. Proceedings. International Conference on
Conference_Location :
Venice
Print_ISBN :
0-7695-0040-4
DOI :
10.1109/ICIAP.1999.797714
