Abstract :
This paper study and analysis the video coding algorithms, which are standard for low bit rate communication. The image source format and picture structure and type are introduced at first. Then the coding algorithms employed in H.263+ and H.264 are introduce, which are a hybrid DPCM/transform algorithm, prediction ,DCT, motion estimation, variable run-length coding,. Furthermore, the generally used mode such as advanced prediction, unrestricted motion vectors, advanced intra coding, deblocking filter, improved PB Frames are explained and analyzed. Finally, using example video, we test the image quality and compression efficiency with different mode.
Keywords :
data compression; discrete cosine transforms; motion estimation; variable length codes; video coding; DPCM/transform algorithm; H.263/H.264 standard; discrete cosine transform; image quality; image source format; low bit rate communication; motion estimation; picture structure; variable run-length coding; video coding algorithm; video compression; Algorithm design and analysis; Bit rate; Communication standards; Discrete cosine transforms; Filters; Image motion analysis; Motion analysis; Motion estimation; Prediction algorithms; Video coding;
