Multiresolution Wavelet Decompositions for Content Based Image Retrieval.
Bhushan V. Patil, Shailaja A. Patil, Smital D. Patil, Manisha B. Barawkar · International Journal of Computer Applications · 2010
We present a method for searching in an image database using a query image that is similar to the intended target. The query image may be a handdrawn sketch or a potentially low-quality) scan of the image to be retrieved. Our searching algorithm makes use of multiresolution wavelet decompositions of the query and database images. The coefficients of these decompositions are distilled into small “signatures ” for each image. We introduce an “image querying metric ” that operates on these signatures. This metric essentially compares how many significant wavelet coefficients the query has in common with potential targets. The metric includes parameters that can be tuned, using