Eliciting visual primitives for detection of elongated shapes

This paper deals with the problem of eliciting visual primitives for visual search with the aim of detecting 2D objects characterized, primarily, by a n elongated shape. The paper proposes a new visual primitive obtained by co mbining in a suitable correlation, a basic set of standard local features. This primitive is able to synthesize the information associated with local features and, as a more effective ensemble of proprieties of the considered model, enhance detection. The paper discusses the approach, presents the n ew primitive and evaluates its robustness in the case of non-ideal and nois y images. Finally an application to the context of visual inspection is pre sented. (C) 1999 Elsevier Science B.V. All rights reserved.