A hybrid image compression technique using discrete Fourier transform and discrete cosine transform
Other Title(s)
تقنية ضغط صور هجين باستخدام خوارزميتي DFT و DCT
Dissertant
Muhammad, Aishah Abd al-Wahid Hasan
Thesis advisor
University
Amman Arab University
Faculty
Collage of Computer Sciences and Informatics
Department
Department of Computer Science
University Country
Jordan
Degree
Master
Degree Date
2018
English Abstract
The main aim of image compression is to decrease the size of the data required to represent an image.
Thus, reducing the required space to store the image and reducing the time required to transfer the image throughout the computer networks.
The art of designing and developing an image compression system is a compromise between image quality and compression ratio.
This research proposes a new hybrid image technique to achieve high compression ratios and at the same time saving the quality of the compressed image.
The proposed technique combines two different algorithms; the discrete Fourier transform (DFT) and the discrete cosine transform (DCT).
The proposed method consists of two stages: the DFT is first applied on the image to compress it, then in the second stage, the DCT method is applied on the resulted compressed image of the first stage to compress it once again.
The results show that the suggested hybrid image compression approach preserves the quality of the reconstructed image and achieved higher compression ratio compared to individual standalone DFT and DCT.
The experimental results of the proposed hybrid technique show that the average value of PSNR over all test images is 29.89 compared to those of DFT and DCT which are 33.07 and 32.13, respectively.
The results also show that the hybrid technique achieved 23.81 average compression ratio over all test image compared to 19.93 and 21.75 for DFT and DCT, respectively.
The hybrid technique performed better than some of the related work in terms of PSNR and compression ratio.
The results show that the proposed technique outperforms both standalone DFT and DCT in terms of compression ratio and at the same time preserves the quality of the compressed image.
Main Subjects
Information Technology and Computer Science
Topics
No. of Pages
90
Table of Contents
Table of contents.
Abstract.
Abstract in Arabic.
Chapter One : Introduction.
Chapter Two : Theoretical framework and literature review.
Chapter Three : The proposed hybrid technique.
Chapter Four : Experimental results and analysis.
Chapter Five : Conclusion and future direction.
References.
American Psychological Association (APA)
Muhammad, Aishah Abd al-Wahid Hasan. (2018). A hybrid image compression technique using discrete Fourier transform and discrete cosine transform. (Master's theses Theses and Dissertations Master). Amman Arab University, Jordan
https://search.emarefa.net/detail/BIM-931850
Modern Language Association (MLA)
Muhammad, Aishah Abd al-Wahid Hasan. A hybrid image compression technique using discrete Fourier transform and discrete cosine transform. (Master's theses Theses and Dissertations Master). Amman Arab University. (2018).
https://search.emarefa.net/detail/BIM-931850
American Medical Association (AMA)
Muhammad, Aishah Abd al-Wahid Hasan. (2018). A hybrid image compression technique using discrete Fourier transform and discrete cosine transform. (Master's theses Theses and Dissertations Master). Amman Arab University, Jordan
https://search.emarefa.net/detail/BIM-931850
Language
English
Data Type
Arab Theses
Record ID
BIM-931850
