WSEAS Transactions on Circuits and Systems
Print ISSN: 1109-2734, E-ISSN: 2224-266X
Volume 24, 2025
Accordion-based SPIHT Coding for Video Compression using DCT/DWT
Authors: , ,
Abstract: Video signals tend to contain significant temporal compression because of the high degree of correlation between consecutive frames. This means that existing video compression technologies have not utilized all the information that is readily available in such signals. In particular, we will discuss a novel video compression technique that is capable of exploiting temporal redundancy to improve the details while processing requirements are kept low. In our case, the transformation is applied by converting the 3D video data into 2D space. This transformation allows for applying 2D transforms to search for temporal redundancy and makes motion compensation which is rather expensive computationally unnecessary. This transformation combines the spatial and temporal relations of the video signal and provides each group of pictures (GOP) with a single image with higher spatial relations. We then use SPIHT to increase the compression efficiency as a result of the properties of wavelet-transformed images. The use of discrete wavelet transform (DWT) provides a level of de-correlation that allows effective energy compaction to take place resulting in high video compression ratios. A wide range of experiments clearly indicates the potential of our technique especially when the bit rates are high and with slow-motion videos.
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Pages: 24-30
DOI: 10.37394/23201.2025.24.3