Efficient Accordion DWT based Video Coding
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10.5120/17563-8188 |
N R Gawande, P P Ghadekar and M L Dhore. Article: Efficient Accordion DWT based Video Coding. International Journal of Computer Applications 100(10):33-39, August 2014. Full text available. BibTeX
@article{key:article,
author = {N. R. Gawande and P. P. Ghadekar and M. L. Dhore},
title = {Article: Efficient Accordion DWT based Video Coding},
journal = {International Journal of Computer Applications},
year = {2014},
volume = {100},
number = {10},
pages = {33-39},
month = {August},
note = {Full text available}
}
Abstract
Among all multimedia applications, transmission of video frames requires large bandwidth and more bytes for storage. To reduce transmission bandwidth and storage memory, video compression is necessary. The proposed technique compresses the video by reducing the spatial, spectral and temporal redundancies of the input video. Considerable amount of redundancy is often present between a set of frames since only a small portion of each frame is involved with any motion that is taking place. It is called temporal redundancy. Accordion is a method that converts the temporal redundancy into the spatial redundancy. Transformation of the video from 3D to 2D that allows exploring the temporal redundancy of the video using 2D transforms and avoiding the computationally demanding motion recompense step. Accordion transformation converts the spatial and temporal correlation of the video signal into a high spatial correlation. This technique transforms each group of pictures(GOP) into one picture with high spatial correlation. The main advantage of applying Discrete Wavelet Transform(DWT) is to achieve high compression while maintain reconstruction quality. Since, the large data block size is considered compared to Accordion-Discrete Cosine Transform (ACC-DCT); there will be less probability of occurrence of the blocking artifact. The compression ratio was found more for those videos having less motion and vice- versa. Many experimental tests have been conducted to prove the technique efficiency especially in high bit rate and with slow motion video. Since motion is low, temporal redundancy is high and it is expected that ACC-DWT becomes efficient.
References
- N. Boinovi and J. Konrad,"Motion Estimation and Motion Compensated Video Compression Using DCT and DWT", vol. 20, pp. 510. 528, 2005.
- G. M. P. Servais, "Video Compression using the three dimensional discrete cosine transform" in Proc. COMSIG, pp. 27. 32, 1997.
- T. Fryza and S. Hanus, "Video signals transparency in consequence of 3d-dct transform," in Radioelektronika 2003Conference Proceedings, (Brno,Czech Republic),pp. 127. 130, 2003.
- G. Suresh, P. Epsiba, Dr. M. Rajaram, Dr. S. N. Sivanandam "Scalable ACC-DCT Based Video Compression Using Up/Down Sampling Method", IJCNS) International Journal of Computer and Network Security, Vol. 2, No. 6, June 2010.
- A. N. N. T. R. K. R. , "Discrete cosine transforms," in IEEE transactions on computing. pp. 90. 93, 1974.
- Design of a New Video Compression Algorithm Using Accordion Function International Journal of Science and Modern Engineering (IJISME) ISSN: 2319-6386, Volume-1, Issue-6, May 2013
- N. Boinovi and J. Konrad, "Motion analysis in 3d dct domain and its application to video coding,"vol. 20, pp. 510. 528, 2005.
- E. Y. Lam and J. W. Goodman, "A mathematical analysis of the dct coefficient distributions for images," vol. 9, pp. 1661. 1666, 2000.