在建立一个术语表,方便自己索引查阅.

Affine Transformation – An affine transformation is any transformation that preserves collinearity (i.e., all points lying on a line initially still lie on a line after transformation) and ratios of distances (e.g., the midpoint of a line segment remains the midpoint after transformation).
Affine Transformation — From MathWorld

Homogenous coordinate representation: 4 numbers to represent a 3D point or 3numbers to represent a 2D point with a division rule.

K(Greece): kappa

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