A comparative study on interpolation methods for digital elevation model

Author

Arai, Kohei ; Terayama, Yasunori ; Nakamura, Katsutoshi

Author_Institution

Dept. of Inf. Sci., Saga Univ., Japan

fYear

1993

fDate

18-21 Aug 1993

Firstpage

1975

Abstract

A comparative study on interpolation methods, the proposed interpolation method based on Fractal model. FFT (Fast Fourier Transformation) method and Parametric Spline method has been conducted. 50 m meshed Digital Elevation Model (DEM) was sub-sampled by 5×5 results in 250 m meshed DEM. Then 250 m meshed DEM was interpolated with the aforementioned three methods by 5×5 results in an interpolated 50 m meshed DEM. Root Mean Square (RMS) error between real and interpolated DEM was evaluated for three methods. The experimental results show that RMS error for the proposed Fractal interpolation method is about 1/4 compared to that for Parametric Spline method and is superior to FFT method

Keywords

fractals; geophysical techniques; interpolation; remote sensing; remote sensing by radar; synthetic aperture radar; topography (Earth); DEM; FFT; Fast Fourier Transformation; Fractal model; digital elevation model; fractal; geodesy; geophysical measurement technique; interpolation method; land surface topography; parametric spline; remote sensing; Digital elevation models; Fractals; Frequency domain analysis; Image resolution; Information science; Interpolation; Noise generators; Shape; Speckle; Spline;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 1993. IGARSS '93. Better Understanding of Earth Environment., International

Conference_Location

Tokyo

Print_ISBN

0-7803-1240-6

Type

conf

DOI

10.1109/IGARSS.1993.322050

Filename

322050