Comparative analysis of video compression mechanisms based on EZW coded 3D-DWT and AVI

In this paper, two video compression mechanisms based on 3D-Discrete Wavelet Transform (DWT) and 2D Embedded Zero Wavelet (EZW) are compared depending on the mathematical parameters i.e., Peak Signal-to-Noise Ratio (PSNR) and compression ratio(CR)to that of the standard mechanism. In this paper, we are using Haar wavelet decomposition along with standard EZW for compression, as it has shown improved compression in recent years when used with the techniques like EZW, SPIHT etc. Haar wavelet is chosen because of its ease of implementation and has inherent properties. We apply EZW on frame-by-frame on the encoded video as it is meant for 2D-data only. Here we are adding the extra blocks for video encoding and decoding before and after the existing compression technique i.e., EZW. So, these mechanisms are very easy to implement by just adding the extra blocks of encoding and decoding.