[1] [1] LIU Shang-ping, CHEN Ji. Enhancement method for retinal images based on Gabor filter and morphology［J］. Journal of Optelectronics·Laser, 2010, 21(2): 328-322.

[2] [2] CHANG Xia, JIAO Li-cheng, JIA Jian-hua, et al. Noisy image enhancement based on three-state HMT model in wavelet domain［J］. Acta Photonica Sinica, 2010, 39(8): 1351-1358.

[3] [3] WU Yi-quan, SHI Jun-peng. Image enhancement in non-subsampled contourlet transform domain based on multi-scale retinex［J］. Acta Optica Sinica, 2015, 35(3): 0310002.

[4] [4] CHU Zhao-hui, WANG Rong-gui, ZHANG Xuan, et al. Enhancement method of GPEG2000 compression image based on retinex theory［J］. Acta Photonica Sinica, 2012, 41(2): 200-204.

[5] [5] DOU Zhi, HAN Yu-bing, SHENG Wei-xing, et al. Adaptive image enhancement via local processing in double channel［J］. Journal of Computer-Aided Design & Computer Graphics, 2015, 27(10): 1823-1831.

[6] [6] KAREN P, ZHOU Yi-cong. Parameterized logarithmic framework for image enhancement［J］. IEEE Transactions on Systems, 2011, 41(2): 460-473.

[7] [7] SHAHAN C, KAREN A, SOS S. Non-linear direct multi-scale image enhancement based on the luminance and contrast masking characteristics of the human visual system［J］. IEEE Transactions on Image Processing, 2013, 22(9): 3549-3561.

[8] [8] HASAN D, GHOLAMREZA A. Image resolution enhancement by using discrete and stationary wavelet decomposition［J］. IEEE Transactions on Image Processing, 2011, 20(5): 1458-1460.

[9] [9] GHIMIRE D, LEE J. Nonlinear transfer function-based local approach for color image enhancement［J］. IEEE Transactions on Consumer Electronic, 2011, 57(2): 858-865.

[10] [10] HUANG Li-dong, ZHAO Wei, WANG Jun, et al. Combination of contrast limited adaptive histogram equalisation and discrete wavelet transform for image enhancement［J］. IET Image Processing, 2014, 9(10): 908-915.

[11] [11] NIKOLOVA M, STEIDL G. Fast hue and range preserving histogram specification: theory and new algorithms for color image enhancement［J］. IEEE Transactions on Image Processing, 2014, 23(9): 4187-4100.

[12] [12] XU Bei-lei, ZHUANG Yi-qi, TANG Hua-lian, et al. Object-based multilevel contrast stretching method for image enhancement［J］. IEEE Transactions on Consumer Electronic, 2010, 56(3): 1746-1754.