Title :
Hierarchical transform coding using NURBS approximation
Author :
Polec, Jaroslav ; Ondruaová, Sandra ; Kotuliaková, Kvetoslava ; Heleaová, Natália ; Karlubikova, T.
Author_Institution :
Dept. of Telecommuniactions, Slovak Univ. of Technol. Bratislava, Bratislava
Abstract :
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.
Keywords :
data compression; image coding; image segmentation; transform coding; NURBS approximation; hierarchical multiresolution image compression; hierarchical transform coding; image compression mode; image mask; segment boundaries; shape independent basis functions; tree-level hierarchical encoder; Decoding; Image coding; Image resolution; Image segmentation; Shape; Spline; Streaming media; Surface reconstruction; Surface topography; Transform coding; hierarchical multiresolution encoding; image compression; shape independent transform;
Conference_Titel :
ELMAR, 2008. 50th International Symposium
Conference_Location :
Zadar
Print_ISBN :
978-1-4244-3364-3
