Comparison of data hiding using LSB and DCT for image
Steganography is the art and science of hiding information by embedding data into cover media. There are two main domains namely spatial and frequency domain. In this project, a comparison is made between hiding in spatial domain using LSB technique and hiding in frequency domain using DCT tec...
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| Format: | Thesis |
| Language: | English English |
| Published: |
2014
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| Online Access: | http://eprints.uthm.edu.my/1708/ http://eprints.uthm.edu.my/1708/1/24p%20ZAMZAM%20HOHAMED%20AHMED.pdf http://eprints.uthm.edu.my/1708/2/ZAMZAM%20HOHAMED%20AHMED%20WATERMARK.pdf |
| _version_ | 1848887537590861824 |
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| author | Ahmed, Zamzam Hohamed |
| author_facet | Ahmed, Zamzam Hohamed |
| author_sort | Ahmed, Zamzam Hohamed |
| building | UTHM Institutional Repository |
| collection | Online Access |
| description | Steganography is the art and science of hiding information by embedding data into cover
media. There are two main domains namely spatial and frequency domain. In this
project, a comparison is made between hiding in spatial domain using LSB technique
and hiding in frequency domain using DCT technique. Various BMP cover images with
256x256 and 512x512 resolutions for LSB and DCT techniques are used in the
experimentations. For DCT technique, various BMP image is converted to JPEG image.
Then data is hidden into the JPEG cover image using DCT technique. After that, the
JPEG stego image is converted back to BMP stego image. These BMP stego images
from LSB and DCT are compared using PSNR. Results from these experiments show
that 75% of the stego images hidden using LSB has shown higher PSNR values than
stego images hidden using DCT. This means that the stego image hidden using LSB has
shown a much closer similarity to the cover image than stego image hidden using DCT,
thus much harder to detect hidden data in the stego image by LSB. |
| first_indexed | 2025-11-15T19:55:58Z |
| format | Thesis |
| id | uthm-1708 |
| institution | Universiti Tun Hussein Onn Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T19:55:58Z |
| publishDate | 2014 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | uthm-17082021-10-04T08:45:24Z http://eprints.uthm.edu.my/1708/ Comparison of data hiding using LSB and DCT for image Ahmed, Zamzam Hohamed QA76 Computer software Steganography is the art and science of hiding information by embedding data into cover media. There are two main domains namely spatial and frequency domain. In this project, a comparison is made between hiding in spatial domain using LSB technique and hiding in frequency domain using DCT technique. Various BMP cover images with 256x256 and 512x512 resolutions for LSB and DCT techniques are used in the experimentations. For DCT technique, various BMP image is converted to JPEG image. Then data is hidden into the JPEG cover image using DCT technique. After that, the JPEG stego image is converted back to BMP stego image. These BMP stego images from LSB and DCT are compared using PSNR. Results from these experiments show that 75% of the stego images hidden using LSB has shown higher PSNR values than stego images hidden using DCT. This means that the stego image hidden using LSB has shown a much closer similarity to the cover image than stego image hidden using DCT, thus much harder to detect hidden data in the stego image by LSB. 2014-12 Thesis NonPeerReviewed text en http://eprints.uthm.edu.my/1708/1/24p%20ZAMZAM%20HOHAMED%20AHMED.pdf text en http://eprints.uthm.edu.my/1708/2/ZAMZAM%20HOHAMED%20AHMED%20WATERMARK.pdf Ahmed, Zamzam Hohamed (2014) Comparison of data hiding using LSB and DCT for image. Masters thesis, Universiti Tun Hussein Onn Malaysia. |
| spellingShingle | QA76 Computer software Ahmed, Zamzam Hohamed Comparison of data hiding using LSB and DCT for image |
| title | Comparison of data hiding using LSB and DCT for image |
| title_full | Comparison of data hiding using LSB and DCT for image |
| title_fullStr | Comparison of data hiding using LSB and DCT for image |
| title_full_unstemmed | Comparison of data hiding using LSB and DCT for image |
| title_short | Comparison of data hiding using LSB and DCT for image |
| title_sort | comparison of data hiding using lsb and dct for image |
| topic | QA76 Computer software |
| url | http://eprints.uthm.edu.my/1708/ http://eprints.uthm.edu.my/1708/1/24p%20ZAMZAM%20HOHAMED%20AHMED.pdf http://eprints.uthm.edu.my/1708/2/ZAMZAM%20HOHAMED%20AHMED%20WATERMARK.pdf |