Title :
A parametric solution for optimal overlapped block motion compensation
Author :
Tao, Bo ; Orchard, Michael T.
Author_Institution :
Streaming 21 Inc., Los Gatos, CA, USA
fDate :
3/1/2001 12:00:00 AM
Abstract :
We find the optimal window for overlapped block motion compensation (OBMC) by statistically modeling the motion field, the field of block motion estimates and their relationship. This enables us to show how the optimal OBMC window is affected by random field parameters, such as the variance of the motion field and the correlation coefficients of both the intensity field and the motion field. The OBMC window obtained in this fashion is shown to have good performance in reducing the prediction error. Furthermore, this parametric solution provides insight into motion uncertainty and the overlapped motion compensation process
Keywords :
correlation methods; motion compensation; motion estimation; optimisation; prediction theory; video coding; block motion estimates; correlation coefficients; intensity field; motion estimation algorithm; motion field variance; motion uncertainty; optimal OBMC window; optimal overlapped block motion compensation; optimal window; parametric solution; prediction error reduction; random field parameters; statistical modeling; video coding; Autocorrelation; Error analysis; Filters; ISO standards; Motion compensation; Motion estimation; Partitioning algorithms; Two dimensional displays; Uncertainty; Video coding;
Journal_Title :
Image Processing, IEEE Transactions on
