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Date of download: 6/2/2016 Copyright © 2016 SPIE. All rights reserved. Watermarking the intensity component of a color image using the IHS color coordinate.

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Presentation on theme: "Date of download: 6/2/2016 Copyright © 2016 SPIE. All rights reserved. Watermarking the intensity component of a color image using the IHS color coordinate."— Presentation transcript:

1 Date of download: 6/2/2016 Copyright © 2016 SPIE. All rights reserved. Watermarking the intensity component of a color image using the IHS color coordinate system. Figure Legend: From: Novel and robust saturation watermarking in wavelet domains for color images Opt. Eng. 2005;44(11):117002-117002-15. doi:10.1117/1.2128416

2 Date of download: 6/2/2016 Copyright © 2016 SPIE. All rights reserved. A sample image decomposed into ten subbands of three levels by DWT. Figure Legend: From: Novel and robust saturation watermarking in wavelet domains for color images Opt. Eng. 2005;44(11):117002-117002-15. doi:10.1117/1.2128416

3 Date of download: 6/2/2016 Copyright © 2016 SPIE. All rights reserved. Example of pixel-based adaptively permuted watermark, where the LL3 subband is computed and sorted, and each value of a watermark pixel is sorted also, then shuffled in spatial position according to the corresponding sorting order of the LL3 subband values. Figure Legend: From: Novel and robust saturation watermarking in wavelet domains for color images Opt. Eng. 2005;44(11):117002-117002-15. doi:10.1117/1.2128416

4 Date of download: 6/2/2016 Copyright © 2016 SPIE. All rights reserved. (a) Original “Lena” image. (b) Logo ̱ 1 image. (c) Original “Peppers” image. (d) Original “Baboon” image. (e) Logo ̱ 2 image. (f) Logo ̱ 3 image. (g) Logo ̱ 4 image. (h) Logo ̱ 5 image. Figure Legend: From: Novel and robust saturation watermarking in wavelet domains for color images Opt. Eng. 2005;44(11):117002-117002-15. doi:10.1117/1.2128416

5 Date of download: 6/2/2016 Copyright © 2016 SPIE. All rights reserved. Results of attack by JPEG and JPEG-2000 compression on the “Lena” image with the watermark embedded in the intensity and in the saturation component: (a) correlation coefficient versus JPEG compression quality. (b) Correlation coefficient versus JPEG-2000 compression quality. Figure Legend: From: Novel and robust saturation watermarking in wavelet domains for color images Opt. Eng. 2005;44(11):117002-117002-15. doi:10.1117/1.2128416

6 Date of download: 6/2/2016 Copyright © 2016 SPIE. All rights reserved. Results of attack by JPEG and JPEG-2000 compression on the “Lena” image with the watermark embedded by Cox’s method and by our method: (a) correlation coefficient versus JPEG compression quality; (b) correlation coefficient versus JPEG-2000 compression quality. Figure Legend: From: Novel and robust saturation watermarking in wavelet domains for color images Opt. Eng. 2005;44(11):117002-117002-15. doi:10.1117/1.2128416

7 Date of download: 6/2/2016 Copyright © 2016 SPIE. All rights reserved. Results of attacks by JPEG and JPEG-2000 compression on the “Peppers” image with the watermark embedded by Cox’s method and by our method: (a) correlation coefficient versus JPEG compression quality; (b) correlation coefficient versus JPEG-2000 compression quality. Figure Legend: From: Novel and robust saturation watermarking in wavelet domains for color images Opt. Eng. 2005;44(11):117002-117002-15. doi:10.1117/1.2128416

8 Date of download: 6/2/2016 Copyright © 2016 SPIE. All rights reserved. Results of attacks by JPEG and JPEG-2000 compression to the “Baboon” image with the watermark embedded by Cox’s method and by our method: (a) correlation coefficient versus JPEG compression quality; (b) correlation coefficient versus JPEG-2000 compression quality. Figure Legend: From: Novel and robust saturation watermarking in wavelet domains for color images Opt. Eng. 2005;44(11):117002-117002-15. doi:10.1117/1.2128416


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