Apparatus and method for half-pixel motion estimation for video encoder

摘要

The present invention relates to a half-pixel motion estimation apparatus and method for a video encoder, and reduces the number of clocks used in the operation to be implemented as a real-time system using 4SS, and adds one step to the half-pixel motion It can be used for estimation and motion compensation, and 4SS is better than TSS and requires fewer clocks than FSS. Therefore, it is suitable for real-time system and image data can be input at 6.5MHz. In this case, we propose a search algorithm that can operate the system at about 27MHz and estimate a larger motion vector so that it is excellent in performance and can be efficiently applied to implement video encoders such as MPEG-1 and MPEG-2 in VLSI. It is.