Abstract
The importance of video encoding has boomed rapidly since video data communication was widely needed. In this paper, we propose a multi-pass algorithm to accelerate the motion estimation (ME), the dominant part in video encoding, with the graphics processing unit (GPU). By the multi-pass method to unroll and rearrange the multiple nested loops, the complex ME can be implemented on GPU. Besides, ME can be executed efficiently with the built-in parallel processing and texture filter of GPU. Experimental results show that, by utilizing the computing power of GPU, about two times and 14 times speed-up can be achieved for integer-pel ME and MPEG-1/2 half-pel ME, respectively.
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