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http://hdl.handle.net/20.500.12358/27137
Title | A Comparative Study of DCT and DWT Image Compression Techniques combined with Huffman coding |
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Title in Arabic | دراسة مقارنة بين خوارزميات تقنيتي DCT و DWT مع استخدام ترميز هوفمان |
Abstract |
Image compression techniques have been widely used to store and transmit data which requires storage space and high transfer speed. The explosive growth of high-quality photos leads to the requirement of efficient technique to store and exchange data over the internet. In this paper, we present a comparative study to compare between the Discrete Cosine Transform (DCT) and Discrete Wavelet Transform (DWT) algorithms in combination with Huffman algorithm; DCT-H and DWT-H. The comparison is based on five factors: Compression Ratio (CR), Mean Square Error (MSE), Peak Signal-to-Noise Ratio (PSNR), Structural Similarity Index Measure (SSIM) and compression/decompression time. The experiments are conducted on five BMP gray-scale file images. We found out that DWT-H coding is comparable to DCT-H coding in term of CR and outperforms DCT-H in terms of MSE, PSNR and SSIM. The CR average results of the five test images for DCT-H and DWT-H are 2.36 and 3.17, respectively. Moreover, DCT-H has the average results of MSE = 13.19, PSNR = 37.15 and SSIM = 0.76, while WDT-H has the average results of MSE = 4.54, PSNR = 42.5 and SSIM = 0.85. On the other hand, DCT-H outperforms DWT-H in term of execution time for compression and decompression. DCT-H has an average compression time of 0.358s and an average decompression time of 0.122s, while WDT-H has 2.38s compression time and 2.13s decompression time. |
Authors | |
Type | Journal Article |
Date | 2019-08 |
Language | English |
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Published in | Jordanian Journal of Computers and Information Technology |
Series | Vol. 05, No. 02 |
Publisher | ScopeMed Publishing |
Citation | |
Item link | Item Link |
DOI | 10.5455/jjcit.71-1554982934 |
ISSN | 24139351 |
License | ![]() |
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Files in this item | ||
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2-DOI 10.5455-jjcit.71-1554982934.pdf | 1.373Mb |