Scale Invariant Sillhouette Features


21st Signal Processing and Communications Applications Conference (SIU), CYPRUS, 24 - 26 April 2013 identifier

  • Publication Type: Conference Paper / Full Text
  • Country: CYPRUS
  • Keywords: plane curves, sillhouettes, shape recognition, IMAGE CORNER DETECTION, SHAPE, RECOGNITION


In this study, a feature extractor and a global descriptor for closed planar curves, i.e. silhouettes, are proposed. Initially, the closed curve is arc-length sampled and the Gaussian scale-space is constructed. Using the absolute curvature values and orientations of the curves within the higher scale levels, scale invariant features are obtained. These features are transformed into a global descriptor, namely the feature images, and shape recognition is performed. The proposed method is evaluated using a ship silhouette image set and the results show good success rates with low computation burden.