An Efficient Motion Estimation Model for MPEG-4 Video Encoder
01 January 2003
The designer who wishes to develop an efficient video encoding system for consumer devices such as digital video cameras and recorders must find a fast motion estimation method to reduce the huge computation complexity. Block-matching motion estimation (BMME) is an essential part of several video-coding standards. Full-search block-matching motion estimation is always used in reference software as a benchmark. Most of these fast algorithms sacrifice search quality by using only a subset of the search area in order to reduce the total number of searches. Moreover, most of the existing fast algorithms focus on a macro-block full-pel motion estimation. In MPEG-4, a new 8x8 block full-pel ME is introduced. This paper describes an efficient method for MPEG-4 ME algorithm. The proposed method can significantly reduce the total number of searches and computations without degrading the search quality.