Derivation of surface topography and terrain parameters from single satellite image using shape-from-shading technique

作者：Liu HX^*

来源：Computers & Geosciences, 2003, 29(10): 1229-1239.

DOI：10.1016/S0098-3004(03)00138-9

• digital elevation model
• fast Fourier transform
• SPOT
• surface slope and orientation
• topography

This paper evaluates and compares two area-based shape-from-shading algorithms for deriving detailed surface topography and terrain parameters. A Fourier transform-based linear algorithm and an iterative minimization algorithm with integrability constraint are devised and implemented using C + + programming language, and applied to a SPOT panchromatic image. The relative height measurements from the shape-from-shading technique are calibrated into an absolute elevation model using a parametric least-squares adjustment procedure based on a number of ground control points. Surface slope, orientation, and structural lines are also calculated based on the digital elevation model derived from the shape-from-shading technique. The comparative advantages of the two algorithms are discussed, and the combination of two algorithms is also explored. The fundamental requirement for the shape-from-shading algorithms is that the terrain surface under investigation has a relatively homogenous land cover. Source codes in C + + and test data sets are available.

• 出版日期2003-12