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A feature-level image fusion algorithm using wavelet transform combined with the discrete cosine transform (DCT) is proposed. The basic idea is to perform block-DCT of each source image first, and then to select the retained coefficients according to maximum variance; each image is compressed to 25 percent of the original size. The coordinates of the retained coefficients are used as private keys. Finally, the processed DCT coefficient matrixes are taken as the wavelet coefficients and the fused image is obtained by taking the inverse wavelet transform. The experimental results show that the algorithm realizes the fusion of images with different sizes. Furthermore, one single image can be reconstructed by one single private key.
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Keywords:
- image fusion /
- wavelet transform /
- DCT /
- coding
[1] Miao Q G, Wang B S 2007 Acta Optica Sin. 27 1605 (in Chinese)[苗启广、王宝树 2007 光学学报 27 1605]
[2] Liu G X, Yang W H 2002 Acta Automatica Sin. 28 927(in Chinese) [刘贵喜、杨万海 2002 自动化学报 28 927]
[3] Wang H, Jing Z L, Li J X 2005 Chin. J. Lasers 32 351(in Chinese)[王 宏、敬忠良、李建勋 2005 中国激光 32 351]
[4] Zhang C, Bo L F, Zhang Y 2007 Acta Phys. Sin. 56 3227(in Chinese) [张 闯、柏连发、张 毅 2007 56 3227]
[5] Guan Z Q, Chen Q, Qian W X, Hu Y S 2008 Acta Optica Sin. 28 860 (in Chinese)[管志强、陈 钱、钱惟贤、胡永生 2008 光学学报 28 860]
[6] Zhong X P, Xu Y, Dong J T 2006 Acta Phys. Sin. 55 3223(in Chinese)[宗晓萍、徐 艳、董江涛 2006 55 3223]
[7] Liu Y, Li H D 2003 J. Image and Graphics 8A 121(in Chinese)[刘 艳、李宏东 2003 中国图象图形学报 8A 121]
[8] Niu X X, Yang Y X 2000 Chin. J. Computers 23 21(in Chinese) [钮心忻、杨义先 2000 计算机学报 23 21]
[9] Wei H L, Shi J H , Tzong W K, Ping Z F 2008 IEEE Trans. on Multimedia 10 746
[10] Shih H W, Yuan P L 2004 IEEE Trans. on Image Processing 13 154
[11] Wang Y W, Doherty J F, Van Dyck R E 2002 IEEE Trans. On Image Processing 11 77
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[1] Miao Q G, Wang B S 2007 Acta Optica Sin. 27 1605 (in Chinese)[苗启广、王宝树 2007 光学学报 27 1605]
[2] Liu G X, Yang W H 2002 Acta Automatica Sin. 28 927(in Chinese) [刘贵喜、杨万海 2002 自动化学报 28 927]
[3] Wang H, Jing Z L, Li J X 2005 Chin. J. Lasers 32 351(in Chinese)[王 宏、敬忠良、李建勋 2005 中国激光 32 351]
[4] Zhang C, Bo L F, Zhang Y 2007 Acta Phys. Sin. 56 3227(in Chinese) [张 闯、柏连发、张 毅 2007 56 3227]
[5] Guan Z Q, Chen Q, Qian W X, Hu Y S 2008 Acta Optica Sin. 28 860 (in Chinese)[管志强、陈 钱、钱惟贤、胡永生 2008 光学学报 28 860]
[6] Zhong X P, Xu Y, Dong J T 2006 Acta Phys. Sin. 55 3223(in Chinese)[宗晓萍、徐 艳、董江涛 2006 55 3223]
[7] Liu Y, Li H D 2003 J. Image and Graphics 8A 121(in Chinese)[刘 艳、李宏东 2003 中国图象图形学报 8A 121]
[8] Niu X X, Yang Y X 2000 Chin. J. Computers 23 21(in Chinese) [钮心忻、杨义先 2000 计算机学报 23 21]
[9] Wei H L, Shi J H , Tzong W K, Ping Z F 2008 IEEE Trans. on Multimedia 10 746
[10] Shih H W, Yuan P L 2004 IEEE Trans. on Image Processing 13 154
[11] Wang Y W, Doherty J F, Van Dyck R E 2002 IEEE Trans. On Image Processing 11 77
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