勘探矢量图约束的遥感影像几何校正方法研究
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摘要
从可形成数字化地震采集工程图的遥感影像和勘探矢量图的特点分析入手,阐述了遥感影像几何校正过程中特征点的选择原则和方法;以矢量图作为约束,采用全局和局部变换相结合的方式建立数学模型,利用最小二乘法求取变换参数,对数据做重采样处理,实现了遥感影像的图像几何校正。在此基础上,提出了一套用于地震采集工程的遥感影像几何校正处理流程。实际应用表明了该技术和流程的可行性。
A precise geometric correction method for remote sensing image being constrained in the vector graphics of seismic exploration based on feature points is researched. The characteristics of a remote sensing image and a seismic exploration vector graphics are analyzed at first, which can generate digital maps in seismic acquisition. Then, regarding vector graphics as constraint, a mathematics model is built, combining together overall transform and local transform. After the transform parameters are calculated by least square method, the remote sensing image data is sampled again. So, the remote sensing image is corrected. After that, a procedure of a precise geometric correction for remote sensing image is put forward, which can be used in seismic acquisition. In the end, the practical application maps show the feasibility of this technology and procedure.
引文
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