首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >Feature based image processing methods applied to bathymetric measurements from airborne remote sensing in fluvial environments
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Feature based image processing methods applied to bathymetric measurements from airborne remote sensing in fluvial environments

机译:基于特征的图像处理方法应用于河流环境中机载遥感的测深

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摘要

Bathymetric maps produced from remotely sensed imagery are increasingly common. However, when this method is applied to fluvial environments, changing scenes and illumination variations severely hinder the application of well established empirical calibration methods used to obtain predictive depth-colour relationships. In this paper, illumination variations are corrected with feature based image processing, which is used to identify areas in an image with a near-zero water depth. This information can then be included in the depth-colour calibration process, which results in an improved prediction quality. The end product is an automated bathymetric mapping method capable of a 4 m(2) spatial resolution with a precision of 15 cm, which allows for a more widespread application of bathymetric mapping. Copyright (c) 2006 John Wiley & Sons, Ltd.
机译:从遥感影像生成的测深图越来越普遍。但是,当将此方法应用于河流环境时,场景的变化和光照变化严重地阻碍了用于获得可预测的深度-颜色关系的公认的经验校准方法的应用。在本文中,通过基于特征的图像处理来校正照度变化,该特征用于识别水深接近零的图像区域。然后可以将该信息包含在深度颜色校准过程中,从而提高了预测质量。最终产品是一种自动测深测绘方法,能够以15 cm的精度实现4 m(2)的空间分辨率,从而允许更广泛地应用测深测绘。版权所有(c)2006 John Wiley&Sons,Ltd.

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