Digital Video Watermarking for
Copyright Labelling

Digital Video Watermarking for
Copyright Labelling

Digital Watermarking; DWT; DCT; DFT, PSNR; NC

The use of multimedia content in the internet is now growing, especially in digital video. Counterfeit, fraud, and plundering of video content cause problem because of resource supply for sharing contents. Copyright becomes crusial matter in digital video to avoid manipulation of the irresponsible ones. There are many ways to do for labelling copyright into a video. One of them is digital watermarking. Digital watermaking is used to prevent illegal replication or exploitation of digital content, protect digital content, and avoid multimedia manipulation illegally. The use of several methods such as Discrete Wavelet Transform (DWT), Discrete Cosine Transform (DCT), and Discrete Fourier Transform (DFT) for labelling copyright of video will be compared based on the imperceptibility and robustness after several manipulations applied into inserted-watermark video. From the point of imperceptibility, DWT method results PSNR value at 45, 62435 dB, DCT method results PSNR value at 45,89422 dB, and DFT method results PSNR value at 45, 77747 dB. The PSNR mean from these three methods is 45,76535 dB. It means that the inserted-watermark video appears similiar to the intercalated one. Thus, from the experiment, it can be sum up that the implemented DWT, DCT, and DFT method show that the watermarked video still in a good quality that it is reasonable and meets the imperceptibility. From the point of robustness, the NC mean of DCT method is 0,63974, DCT method is 0,755839, and DFT method is 0,745442. It tells that the result of watermark extraction from these three methods is the same as the original watermark. In other word, all of the watermarks on these three methods can be well extracted though the attacks are delivered to them. From the level of imperceptibility and robustness test on DWT, DCT, and DFT method, it can be said that DCT method is better than DWT and DFT method because it performs a high value on PSNR and NC.

Fitria Ilhami Ikromina, Erik Iman Heri Ujianto

www.ijcit.com

September 2021

peri irawan

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