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PicToSeek: combining color and shape invariant features for image retrieval
by:In: IEEE Transactions on Image Processing, Vol. 9, Nr. 1
(January 2000)
, p. 102--119.
Abstract
We aim at combining color and shape invariants for indexing and retrieving
images. To this end, color models are proposed independent of the
object geometry, object pose, and illumination. From these color
models, color invariant edges are derived from which shape invariant
features are computed. Computational methods are described to combine
the color and shape invariants into a unified high-dimensional invariant
feature set for discriminatory object retrieval. Experiments have
been conducted on a database consisting of 500 images taken from
multicolored man-made objects in real world scenes. From the theoretical
and experimental results it is concluded that object retrieval based
on composite color and shape invariant features provides excellent
retrieval accuracy. Object retrieval based on color invariants provides
very high retrieval accuracy whereas object retrieval based entirely
on shape invariants yields poor discriminative power. Furthermore,
the image retrieval scheme is highly robust to partial occlusion,
object clutter and a change in the object's pose. Finally, the image
retrieval scheme is integrated into the PicToSeek system on-line
at http://www.wins.uva.nl/research/isis/PicToSeek/ for searching
images on the World Wide Web.
Description
Dissertation


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