Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Improved video coding using long-term global motion compensation

: Smolic, A.; Vatis, Y.; Schwarz, H.; Kauff, P.; Gölz, U.; Wiegand, T.


Panchanathan, S.; Vasudev, B.:
Visual Communications and Image Processing 2004. Vol. 1 : San Jose, 20 January 2004
Bellingham, WA: SPIE, 2004 (Proceedings of SPIE 5308)
Visual Communications and Image Processing Conference (VCIP) <2004, San Jose>
Fraunhofer HHI ()

We present a new approach to video coding that utilizes video analysis based on global motion features. For each encoded frame a global motion parameter set is estimated with respect to several previously transmitted frames. Using this global motion parameter set, a new motion compensation technique inspired by super-resolution mosaicing is applied. Rate-distortion optimization is used to identify macroblocks that are only affected by global motion. For such macroblocks no prediction error is transmitted. They are purely reconstructed using long-term global motion-compensated prediction, Our results indicate significant bit-rate savings compared to a state of the art H.264/AVC video codec at the same visual quality.