基于纹理分析的航磁异常边界增强技术研究及应用

将数字图像处理中的纹理分析技术运用到航磁异常数据中,有效地增强了异常的边界信息。纹理分析在增强光栅数据中的细节信息是一种非常有用的工具,图像局部区域的灰度共生矩阵是常用的数字纹理特征,通过计算图像的局部平稳度可用来表征图像的纹理信息,利用纹理分析的这一特征对航磁异常数据进行处理。通过模型试验和对非洲某区域的航磁异常数据进行了处理,结果表明,该方法有效地增强了航磁异常边界。地球物理图像中的线性异常往往对应着地下的断裂、接触带或其他构造特征,本方法也可以帮助解决地质构造的相关问题。

Study and application of edge enhancement in aeromagnetic anomaly based on textural analysis

Texture analysis in digital image processing technology is used in aeromagnetic anomaly data,effectively enhancing the boundary information.Textural analysis is a powerful tool that can be used to enhance subtle detail in raster data-sets, GLCM is a commonly digital texture feature,calculating the local flatness to characterize the texture feature.Aeromagnetic a-nomaly processed based on this method in this paper.Through Model test and application in aeromagnetic anomaly in Sierra Le-one,the result shows that this method enhanced the aeromagnetic anomaly boundary.Linear anomalies in the geophysical im-age often correspond to the fracture of the underground,contact zone or other structural characteristics,the method can also help solve issues related to geological structure.