Data Hiding Algorithm for Images Using Discrete Wavelet Transform and Arnold Transform
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초록
In this paper, data hiding algorithm using Discrete Wavelet Transform (DWT) and Arnold Transform isproposed. The secret data is scrambled using Arnold Transform to make it secure. Wavelet subbands of acover image are obtained using DWT. The scrambled secret data is embedded into significant waveletcoefficients of subbands of a cover image. The proposed algorithm is robust to a variety of attacks like JPEGand JPEG2000 compression, image cropping and median filtering. Experimental results show that the PSNRof the composite image is 1.05 dB higher than the PSNR of existing algorithms and capacity is 25% higherthan the capacity of existing algorithms.
Abstract
In this paper, data hiding algorithm using Discrete Wavelet Transform (DWT) and Arnold Transform isproposed. The secret data is scrambled using Arnold Transform to make it secure. Wavelet subbands of acover image are obtained using DWT. The scrambled secret data is embedded into significant waveletcoefficients of subbands of a cover image. The proposed algorithm is robust to a variety of attacks like JPEGand JPEG2000 compression, image cropping and median filtering. Experimental results show that the PSNRof the composite image is 1.05 dB higher than the PSNR of existing algorithms and capacity is 25% higherthan the capacity of existing algorithms.
참고문헌 (16)
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