For harmful ground collapse and its special deformation characteristics,which causes SAR images to lose coherence,InSAR technology cannot be applied in monitoring surface collapse in mining areas.We took the Shenmu mi...For harmful ground collapse and its special deformation characteristics,which causes SAR images to lose coherence,InSAR technology cannot be applied in monitoring surface collapse in mining areas.We took the Shenmu mining area in northern Shaanxi province as an example to study subsidence in mining areas and proposed an interpolated multi-view processing method.The results show that this method can improve the detectable deformation gradient to a certain extent and can become a good reference value for monitoring large scale gradient deformation.We also analyzed the rules for temporal decorrelation in mining.展开更多
为在高分辨率遥感图像上准确识别地面塌陷、圈定其边界、提取其面积,总结了地面塌陷遥感影像识别标志,提出了一种边界提取方法。该方法以GeoEye高分辨率遥感图像为数据源,在图像融合的基础上,首先用Robert算子和方向算子对融合图像进行...为在高分辨率遥感图像上准确识别地面塌陷、圈定其边界、提取其面积,总结了地面塌陷遥感影像识别标志,提出了一种边界提取方法。该方法以GeoEye高分辨率遥感图像为数据源,在图像融合的基础上,首先用Robert算子和方向算子对融合图像进行边缘增强;然后分别选择原始图像和上述2种边缘增强图像的第一波段进行假彩色合成(Original,Robert and Direction enhanced image,ORD);最后利用ArcGIS软件圈定地面塌陷的边界并提取其相关参数。研究结果表明,该方法可以有效地突出地面塌陷边界,提高其面积提取的精度。展开更多
基金funded by the National Natural Science Foundation of China (Nos.40902081,and 40802075)the Key Project of the Ministry of Land & Resources,China (No.1212010914015)
文摘For harmful ground collapse and its special deformation characteristics,which causes SAR images to lose coherence,InSAR technology cannot be applied in monitoring surface collapse in mining areas.We took the Shenmu mining area in northern Shaanxi province as an example to study subsidence in mining areas and proposed an interpolated multi-view processing method.The results show that this method can improve the detectable deformation gradient to a certain extent and can become a good reference value for monitoring large scale gradient deformation.We also analyzed the rules for temporal decorrelation in mining.
文摘为在高分辨率遥感图像上准确识别地面塌陷、圈定其边界、提取其面积,总结了地面塌陷遥感影像识别标志,提出了一种边界提取方法。该方法以GeoEye高分辨率遥感图像为数据源,在图像融合的基础上,首先用Robert算子和方向算子对融合图像进行边缘增强;然后分别选择原始图像和上述2种边缘增强图像的第一波段进行假彩色合成(Original,Robert and Direction enhanced image,ORD);最后利用ArcGIS软件圈定地面塌陷的边界并提取其相关参数。研究结果表明,该方法可以有效地突出地面塌陷边界,提高其面积提取的精度。
