Acta Optica Sinica, Volume. 42, Issue 5, 0510001(2022)
Adaptive Multi-Watermarking Algorithm Based on PSNR-NC Function Optimization and Undecimated Dual Tree Complex Wavelet Transform
Fig. 5. Four host images. (a) Lena; (b) color painting; (c) stonehenge; (d) fruit
Fig. 8. Watermarked image. (a) Lena; (b) color painting; (c) stonehenge; (d) fruit
Fig. 9. XNC value of watermark image extracted from attack image. (a) No attack; (b) mean filtering; (c) median filtering; (d) salt and pepper noise; (e) Gaussian noise; (f) JPEG compression; (g) image rotation; (h) cropping attack; (i) contrast enhancement and histogram equalization
Fig. 10. Attack image, watermark extracted from it and corresponding XNC value. (a) Average filtering of 7×7; (b) median filtering of 7×7; (c) salt and pepper noise of 0.2; (d) Gaussian noise of 0.2; (e) JPEG compression; (f) rotation 20°; (g) crop 1/8 in upper left corner; (h) crop middle part; (i) crop 1/8 in center; (j) contrast enhancement; (k) histogram equalization
Fig. 11. Attack image, complicated watermark extracted from it and corresponding XNC value. (a) Average filtering of 7×7; (b) median filtering of 7×7; (c) salt and pepper noise of 0.2; (d) Gaussian noise of 0.2; (e) JPEG compression; (f) rotation 20°; (g) crop 1/8 in upper left corner; (h) crop middle part; (i) crop 1/8 in center; (j) contrast enhancement; (k) histogram equalization
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Heyan Wang, Guodong Liu, Cunbin Miao. Adaptive Multi-Watermarking Algorithm Based on PSNR-NC Function Optimization and Undecimated Dual Tree Complex Wavelet Transform[J]. Acta Optica Sinica, 2022, 42(5): 0510001
Category: Image Processing
Received: Jul. 28, 2021
Accepted: Sep. 23, 2021
Published Online: Mar. 8, 2022
The Author Email: Liu Guodong (liuguodong_group@aliyun.com)