Geometry
See also:
- Graphics
Projective
Look at computer vision
Homogenous Coordinates
Make one more coordinate then you need. You decide the overall scale no longer matters. The point (1,3) is the same point as (2,6). The simple model is that of a pinhole camera. If the pinhole is at (0,0,0), then all point light sources on a line stretching through the pinhole make equivalent images. It strangely turns out that these coordinates have beautiful properties.
Duality
In homogenous coordinates,
Axiomatic
Euclidean
Classical geometry. Euclidean lines and points and circles
Algebraic
Differential
Visual differential geometry Functional differential geometry
Curvature
Discrete Geometry
Convex Geometry
- See convex optimization