Through concrete analysis on the source of image errors, this paper expounds the ways of making geometrical correction for image errors by using digital method.
文章通过对图象误差来源的具体分析，阐述了利用数字方法对图象误差进行几何纠正的方法。
Accurate measurement of geometrical distortion of image display system with wide-angle objective lens is the precondition and key of digital distortion correction.
准确地测量含有广角耦合物镜的图像显示系统的几何畸变是实现图像显示系统几何畸变数字校正的前提和关键。
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