[1] Zeng Jiyong, Su Xianyu. A new rectification method of stereo pairs without calibration for cameras[J]. Acta Optica Sinica, 2004, 24(5): 628～632 (in Chinese)
曾吉勇,苏显渝. 一种无相机标定的立体图像对校正新方法[J]. 光学学报, 2004, 24(5): 628～632

[2] . Farid, E. P. Simoncelli. Range estimation by optical differentiation[J]. J. Opt. Soc. Am. (A), 1998, 15(7): 1777-1786.

[3] . Pentland, S. Scherock, T. Darrell et al.. Simple range cameras based on focal error[J]. J. Opt. Soc. Am. (A), 1994, 11(11): 2925-2934.

[4] . Subbarao, T. C. Wei, G. Surya. Focused image recovery from two defocused images recorded with different camera settings[J]. IEEE Transactions on Image Processing, 1995, 4(12): 1613-1628.

[5] . M. Bove. Entropy-based depth from focus[J]. J. Opt. Soc. Am. (A), 1993, 10(4): 561-566.

[6] . N. Rajagopalan, N. Chaudhuri. Optimal recovery of depth from defocused images using an MRF model[J]. IEEE Sixth International Conference on Computer Vision, 1998, 4(7): 1047-1052.

[7] G. Surya, M. Subbarao. Depth from defocus by changing camera aperture: a spatial domain approach[C]. Proceedings of the IEEE Computer Society Conference on CVPR, New York, 1996, 15(17): 61～67

[8] . Watanabe, S. K. Nayar. Minimal operator set for passive depth from defocus[J]. IEEE Computer Society Conference on CVPR, 1996, 18(20): 431-438.

[9] Chen Weigong. The Principle of Mechanical Calculus of Variation[M]. Shanghai: Tongji University Press, 1989. 50～55 (in Chinese)
陈位宫. 力学变分原理[M]. 上海: 同济大学出版社, 1989. 50～55