Hierarchical transform coding using NURBS approximation
Jaroslav Polec, Sandra Ondrušová, Kvetoslava Kotuliaková, Natália Helešová, T. Karlubikova · International Symposium ELMAR · 2008
A scheme of utilizing shape independent basis functions for the hierarchical multiresolution image compression is shown. First, the input image is segmented and its segmentspsila boundaries are NURBS approximated, thus achieving an image mask. Second, this image mask and the image are used as the input of the tree-level hierarchical encoder. Hierarchical encoder subsamples image and image mask and encodes them shape independently. Another compression mode is, hence, successfully introduced for shape independent transform coding.