A hybrid transformation with a filter for advanced video coding

H.264/AVC is the most recent video coding standard developed by the ITU-T Video Coding Experts Group and the ISO/IEC Moving Picture Experts Group. The main goal of the H.264/AVC standard has been to provide enhanced compression performance and provision for network friendly video representation addressing conversational and non-conversational applications. This paper mainly concentrates on two modules of the existing advanced video coding standard. The H.264 in-loop deblocking filter is one of the several complex techniques that have realized this superior coding quality. The deblocking filter is a computationally and data intensive tool resulting in increased execution time of both the encoding and decoding processes. The existing filter of the H.264 video codec is not capable of smoothing the video thereby creating an unacceptable blurring phenomenon. In this paper, a new deblocking filter has been used to overcome this drawback. It has a non-linear operator that is able to effectively attenuate the noise that corrupts the quality of the video. The existing system uses discrete cosine transformation which is proved to have several drawbacks. Hence a hybridization method has been incorporated in transformation module of video encoder. This paper presents an hybridization in the transformation module by incorporating DCT as transformation technique for inter frames and a combination of wavelet filters for intra frames of video sequence. This proposal is also applied in the recent H.264/AVC standard and is proved to have better results.