TY - GEN
T1 - Fast gradient methods based global motion estimation for video Compression
AU - Keller, Y.
AU - Averbuch, Amir
N1 - Place of conference:USA
PY - 2002
Y1 - 2002
N2 - This paper presents a fast global motion estimation (GME) algorithm based on gradient methods (GM), which can be used for real-time applications, such as in MPEG4 video compression. This approach improves the existing state-of-the-art GME algorithms by introducing two major modifications: first, only a small subset (down to 3%) of the original image pixels is used in the estimation process. Second, an interpolation-free formulation of the basic GM is derived, further decreasing the computational complexity. Experimental results show no loss of GME accuracy and compression efficiency compared to the MPEG-4 verification model, while reducing the computational complexity of the GME by a factor of 20.
AB - This paper presents a fast global motion estimation (GME) algorithm based on gradient methods (GM), which can be used for real-time applications, such as in MPEG4 video compression. This approach improves the existing state-of-the-art GME algorithms by introducing two major modifications: first, only a small subset (down to 3%) of the original image pixels is used in the estimation process. Second, an interpolation-free formulation of the basic GM is derived, further decreasing the computational complexity. Experimental results show no loss of GME accuracy and compression efficiency compared to the MPEG-4 verification model, while reducing the computational complexity of the GME by a factor of 20.
UR - https://scholar.google.co.il/scholar?q=Fast+gradient+methods+based+global+motion+estimation+for+video+Compression&btnG=&hl=en&as_sdt=0%2C5
M3 - Conference contribution
BT - International Conference on Image Processing (ICIP)
PB - IEEE
ER -