Algoritma Watermaking Menggunakan Pendekatan Fast Fourier Transform dan Discrete Wavelet Transform
| Main Author: | sudinnur. S.Si, muhammad |
|---|---|
| Format: | Article |
| Bahasa: | eng |
| Terbitan: |
, 2017
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| Subjects: | |
| Online Access: |
http://repository.unhas.ac.id/handle/123456789/26564 |
Daftar Isi:
- ABSTRACT The rapid development of network technology causes multimedia data such as images, audio, and video easier to be distributed or copied legally or illegally. Accessing copyright by irresponsible users in distributing digital information is very detrimental to copyright owners. Therefore, it needed a method of watermarking in protecting copyright information such as Fast Fourier Transform (FFT) and Discrete Wavelet Transform (DWT) method. This research is done by combine of Fast Fourier Transform (FFT) and Discrete Wavelet Transform (DWT) method and embedding the watermark image into the original image to research the watermarked image. The simulation results show that for the original watermarked image of the third level decomposition shows the best result with each PSNR value 29.3374 db, 38.9447 db, 38.9447 db, 23.2427 db, 38.9399 db and each NC value of extraction result 0.974343, 0.965329, 0.966879, 1, 0.984348. Testing of watermarked images of several attacks namely Compression, Salt and Pepper, Gaussian, Speckle, Resizing, and Rotation resulting in decreased image quality of extraction results but the insert data can still be seen by naked eye. Keywords: Watermarking, Discrete Wavelet Transform, Fast Fourier Transform, Compression, Salt and Pepper, Gausion, Speckle, Resizing, Rotation, PSNR, NC.