Video Compression Algorithm Based On Wavelet Transform

In order to achieve the sharing of video resources the actual needs of remote videotransmission,people need to reduce the hardware cost by reducing the amount of storageand transmission of video data. As a live recording means, the construction of the videotransmission system should not only consider the construction costs, but also to considerthe quality of the video reconstruction. An algorithm that reduces video encoding dataand can do video fidelity reconstruction of video compression is the focus of the currentstudy, based on video compression algorithm also has become a hot topic in recentyears.This paper from the video compression algorithm for the status, the wavelettransform theory and a more mature image compression based on wavelet transformalgorithm to start, in depth study characterized by a fast wavelet transform-based imagecompression algorithm, combined with the wavelet multi-resolution characteristics isproposed based on wavelet transform video compression algorithm, the main contentand innovation are as follows:1、The algorithm following the Embedded Zerotree Wavelet algorithm (EZW)coefficient scanning method, select the appropriate coefficient segment value rangeof the division of the wavelet coefficients, to replace the method of waveletcoefficients of the reference frame image coding with different letters.2、Combined with three-dimensional wavelet is a two-dimensional wavelet expansionin time for thinking, the use of motion compensation, displacement of the object inthe horizontal direction under the low-resolution high-frequency estimate, the frameimage reconstruction.3、Simulation algorithm with existing algorithms in different bandwidth from twoaspects of the encoding time and the average PSNR comparison.