DWT Based-Video Compression Using (4SS) Matching Algorithm

Authors

  • Marwa Kamel Hussien Department of Computer Science, College of Science, University of Basrah, Basrah, IRAQ.
  • Hameed Abdul-Kareem Younis Department of Computer Science, College of Science, University of Basrah, Basrah, IRAQ.

DOI:

https://doi.org/10.21928/juhd.v1n4y2015.pp427-432

Keywords:

Video Compression, DWT, Motion Estimation, Motion Compensation, Block Matching Algorithm, Four Step Search

Abstract

Currently, multimedia technology is widely used. Using the video encoding compression technology can save storage space, and also can improve the transmission efficiency of network communications. In video compression methods, the first frame of video is independently compressed as a still image, this is called intra coded frame. The remaining successive frames are compressed by estimating the disparity between two adjacent frames, which is called inter coded frame. In this paper, Discrete Wavelet Transform (DWT) is used powerful tool in video compression. Our coder achieves a good trade-off between compression ratio and quality of the reconstructed video.

The motion estimation and compensation, which is an essential part in the compression, is based on segment movements. The disparity between each two frames was estimated by Four Step Search (4SS) Algorithm. The result of the Motion Vector (MV) was encoded into a bit stream by Huffman encoding while the remaining part is compressed like the compression was used in intra frame. Experimental results showed good results in terms of Peak Signal-to-Noise Ratio (PSNR), Compression Ratio (CR), and processing time.

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Published

2015-09-30

Issue

Section

Articles