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利用BP神经网络识别图像基点 被引量:1
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作者 袁振涛 郭俊 师福明 《机械工程与自动化》 2012年第3期200-201,共2页
论述了运用BP神经网络对图像进行识别。介绍了BP神经网络的算法设计、隐层节点的选取等问题。结果表明,BP神经网络有很强的自适应性,对大量样本识别后,能将图像中需要的基点有效地识别出来,且达到较高的准确率。
关键词 BP神经网络 图像基点 图像识别
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A Case Study of Using External DEM in InSAR DEM Generation 被引量:5
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作者 ZHOUChunxia GELinlin +1 位作者 EDongchen CHANGHsingchung 《Geo-Spatial Information Science》 2005年第1期14-18,共5页
Synthetic aperture radar interferometry (InSAR) has been used as an innovative technique for digital elevation model (DEM) and topographic map generation. In this paper, external DEMs are used for InSAR DEM generation... Synthetic aperture radar interferometry (InSAR) has been used as an innovative technique for digital elevation model (DEM) and topographic map generation. In this paper, external DEMs are used for InSAR DEM generation to reduce the errors in data processing. The DEMs generated from repeat-pass InSAR are compared. For steep slopes and severe changes in topography, phase unwrapping quality can be improved by subtracting the phase calculated from an external DEM. It is affirmative that the absolute height accuracy of the InSAR DEM is improved by using external DEM. The data processing was undertaken without the use of ground control points and other manual operation. 展开更多
关键词 INSAR digital elevation model (DEM) external DEM
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