Title :
Robust pan, tilt and zoom estimation
Author :
Grinias, I. ; Tziritas, G.
Author_Institution :
Dept. of Comput. Sci., Univ. of Crete, Heraklion, Greece
Abstract :
We propose a method for estimating the motion parameters for a rotating camera with a possibly changing focal length. This method is suitable for analysing sport event videos. The estimation process consists of three stages: (1) robust estimation of the 2D translational components; (2) 2D block-based motion estimation; (3) robust estimation of a parametric motion model. For more reliability, confidence measures for the 2D motion vectors are introduced. The reliability of the method is illustrated on some difficult real image sequences.
Keywords :
image matching; image sequences; motion estimation; parameter estimation; vectors; video signal processing; 2D motion vectors; 2D translation; block matching; changing focal length; confidence measures; motion estimation; pan estimation; parameter estimation; real image sequences; rotating camera; sport event videos; tilt estimation; zoom estimation; Cameras; Computer science; Image sequences; Motion estimation; Motion measurement; Parameter estimation; Parametric statistics; Robustness; TV; Videos;
Conference_Titel :
Digital Signal Processing, 2002. DSP 2002. 2002 14th International Conference on
Print_ISBN :
0-7803-7503-3
DOI :
10.1109/ICDSP.2002.1028182
