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梯度约束SFS的月面地形重构

DOI: 10.11834/jig.20140512

Keywords: 地形重构,月面地形,明暗恢复形状,反射模型,辐照度方程,梯度约束

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Abstract:

目的解决月面着陆器在下降过程中可能得不到足够的匹配点进行着陆区地形恢复的问题。方法基于特征边缘线梯度比例约束的明暗恢复形状(shapefromshading)算法。首先以Lommel-Seeliger模型模拟月表反射情况,建立辐照度方程;然后以地形特征边缘提取结果为基础,经过最小二乘拟合与表面光滑模型约束后,演化得到剩余影像点的梯度比例因子,实现对辐照度方程的正则化约束。结果经过测试得到模拟影像的平均相对恢复精度可以达到-0.199,真实影像月面可以达到0.051和0.022。结论本文算法能够有效地进行3维地形恢复,且恢复精度优于经典SFS算法中对实际地形恢复效果最好的Tsai算法。

References

[1]  Mai B A, Abas M S. 3D reconstruction using interactive shape from shading [J]. International Journal of Computer Applications, 2011, 28(1): 20- 24. [DOI:10.5120/3353-4623]
[2]  Wu C Y, Narasimhan S G, Jaramaz B. A multi-image shape-from-shading framework for near-lighting perspective endoscopes[J]. International Journal of Computer Vision, 2010, 86: 211-228.[DOI: 10.1007/s11263-009-0207-3.]
[3]  Mohamed E, Fouda Y M, Elhadi G F.Fast trigonometric polynomial approach for computing the shape from shading[J].GVIP Journal, 2005, 5(9):21-26.
[4]  Liao Y,Zhao R C. Analysis and evaluation of several typical SFS algorithms[J]. Journal of Image and Graphics,2001,6(10):953-961. [廖熠, 赵荣椿.从明暗恢复形状(SFS) 的几类典型算法分析与评价[J].中国图象图形学报, 2001, 6(10): 953-961.]
[5]  Ratika P, Ghose M K, Jeyaram A.Extraction of DEM from high resolution satellite imagery using shape from shading approach [J]. International Journal of Computer Applications, 2010, 7(12):40-46.[DOI: 10.5120/1296-1786.]
[6]  Kreslavsky M A, Shkuratov Y G, Velikodsky Y I, et al. Photometric properties of the lunar surface derived from clementine observations [J]. Journal of Geophysical Research, 2000, 105(8):281-295.[DOI: 10.1029/1999JE001150.]
[7]  Wen T, Zhou J L, He K. Edge detection based on image feature [J]. Computer Engineering and Applications,2011,47(12):189-191.[文婷, 周激流, 何坤. 基于图像特征的边缘检测[J].计算机工程与应用,2011, 47(12):189-191. [DOI:10.3778/j.issn.1002-8331.2011.12.053]
[8]  Xu M, Liao Y, Zhang Y N, et al. Analyzing the minimization methods of shape from shading [J]. Computer Engineering and Applications, 2004, 40(2): 20-22. [须明, 廖熠, 张艳宁, 等.Shape from shading最小化方法分析[J].计算机工程与应用, 2004, 40(2): 20-22. [DOI:10.3321/j.issn:1002-8331.2004.02.007]
[9]  Tsai P S, Shah M. A fast linear shape from shading [C]//Proceedings of IEEE Computer Society Conference on CVPR. Urbana Champaign: IEEE, 1992, 734-736.
[10]  Lv Z, Wang F L, Chang Y Q. An improved canny algorithm for edge detection[J]. Journal of Northeastern University: Natural Science, 2007, 28(12):1681-1684. [吕哲, 王福利, 常玉清. 一种改进的Canny边缘检测算法[J]. 东北大学学报:自然科学版, 2007, 28(12): 1681-1684.[DOI:10.3321/j.issn:1005-3026.2007.12.003]
[11]  Samaras D, Metaxas D.Incorporating illumination constraints in deformable models for shape from shading and light direction estimation[J].IEEE Transactions on Pattern Analysis and Machine Intelligence, 2003, 25(2): 247-264.[DOI: 10.1109/TPAMI.2003.1177155.]
[12]  Ouyang Z Y. Overview of the Moon[M].Beijing: Astronautics Press, 2005:304-306. [欧阳自远. 月球科学概论[M].北京: 中国宇航出版社, 2005:304-307]
[13]  Jia Y, Chen J X, Zhang H G. Key technology analysis of lunar rover[J]. Spacecraft Engineering, 2006,15(3):54-58. [贾阳, 陈建新, 张火高. 月面巡视探测器关键技术分析[J], 航天器工程, 2006,15(3): 54-58.]

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