A one-to-one correspondence between points of two geometric figures in which collinear points map to collinear points.
From 'collineate' plus the suffix '-tion.' This mathematical term developed in projective geometry during the 19th century to describe transformations that preserve linear relationships.
Collineations are fundamental in computer graphics transformations—when you rotate or scale an image, straight lines stay straight, and this property is what makes rendering realistic and not warped.
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