A Stereo Pair Selection Method for DEM from Satellite Image Archive

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  • 衛星画像アーカイブを用いたDEM生成におけるステレオペア選択
  • エイセイ ガゾウ アーカイブ オ モチイタ DEM セイセイ ニ オケル ステレオペア センタク

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Abstract

To create a DEM using satellite images, correspondence detection in a stereo pair is regained. For defining a stereo pair, two or more in-track images captured within short period are used in most cases. To use images from different orbits for a stereo pair, parallax, time difference, and environment should be considered. In this paper, we propose a selection method of stereo pairs for creating a precise DEM, in using parallax, time difference and similarity between satellite images. And our method selects stereo pairs for every point for calculating height. We evaluate our method using ALOS/PRISM images. The result shows that the DEM provided by our method using different track images has almost same precision in comparison with the computed one using in-track images.

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