A Hybrid DCT-DWT Video Compression Technique with Motion Estimation and Arithmetic Coding

The recent technological innovations and the emergence of web-based applications that employ multimedia data transfer limits the network bandwidth. This problem can adequately be solved with the help of effective data compression algorithms. Video data is composed of stream of pictures known as frames, whose compression can be improved by elimination of useless or overlapping information from these frames. Transform-based methods are particularly looked for as they have good performance in image and video frame transmission. This research study the practical application of two transforms: Discrete Cosine Transform (DCT) and Discrete Wavelet Transform (DWT). The aim of both approaches is to increase the quality of the frames while achieving a high degree of compression which seems to be perfect for transmission of audio and video data.