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| AN IMPLEMENTATION METHOD FOR IMPROVING H.261 VIDEO CODER |
| Xue Xiangyang; Wu Lide |
| Department of Computer Science,Fudan University,Shanghai 200433 |
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Abstract This paper proposes a method to improve H.261 video coder by modifying the block matching motion estimation algorithm. We think that the traditional block matching algorithm based on the least mean square error or absolute error criteria is not suitable for H.261 video coder. The good criteria must consider not only the error energy, but also the bit number for encoding motion vectors as well as the interframe prediction error. Experimental results show that the performance of H.261 coder is improved greatly by using the proposed implementation method.
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Received: 22 May 1996
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1997, Vol. 19 
