MOTION ESTIMATION IN MPEG-4 VIDEO SEQUENCE USING BLOCK MATCHING ALGORITHM

摘要

Now a day, MPEG-4 is the most apparent multimedia standard which combines natural interactivity, synthetic digital videos and computer graphics. It has a wide variety of applications such as video conferencing, computer games and mobile phones etc. All the applications need portable video communicators, so low power VLSI implementations are required. In addition to the required portable devices, a care must be taken for the band width limitations. To perform an effective transmission of video sequences using the limited Bandwidth, the input data must be compressed and coded to fit these limited resources .This paper aims towards the realization of an efficient estimation of moving components in a video image sequences to isolate moving image from the static background. The architecture developed in this paper uses LMS algorithm for estimating the noise components and also uses Block Matching Algorithm for the detection of moving components in the frame sequences. Further Huffman decoder is used for decoding the compressed data in the video codec. The proposed task is implemented in VHDL Language and the results are analyzed in XILINX Spartan-III.