图像处理技术与几何变换方法

I must remind myself that some birds aren't meant to be confined. Their plumage is excessively vibrant. And when they take flight, the knowledge that locking them up was a misguided act does leave one with a lingering sense of rejoicing. Yet, the place I call home feels emptier and less vibrant without them. To be honest, I can only imagine how much I'll miss my friend. ——《The Shawshank Redemption》

前言

几何变换亦称为空间转换，在图形处理领域中占据重要地位。它是构建各种图形处理算法的基础模块。此过程将原始图像中的各像素坐标转换为目标图像的新坐标，并通过插值运算估算出目标坐标处的像素值。其本质是对像素的空间分布进行重新排列以实现形态或布局的变化需求。

在图像处理的应用中，几何变换通常被用作预处理阶段的一部分，并被视为归一化流程的关键环节之一。
适当运用几何变换能够在很大程度上缓