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Characterize linear, affine and projective transforms!
Linear Maps
A map which is
additive:
homogenous:
Representable by a transformation matrix :
Linear map preserve the origin.
Affine Maps
A map which is
composed of a linear map and a translation:
Affine transformations can be represented as a matrix-vector product by using extended coordinates:
Affine maps preserve collinearity of points and distance ratios.
Projective Maps
Represented by a matrix-vector product using homogeneous coordinates.
Projective maps preserve cross ratios:
A map which is
additive:
homogenous:
Representable by a transformation matrix :
Linear map preserve the origin.
Affine Maps
A map which is
composed of a linear map and a translation:
Affine transformations can be represented as a matrix-vector product by using extended coordinates:
Affine maps preserve collinearity of points and distance ratios.
Projective Maps
Represented by a matrix-vector product using homogeneous coordinates.
Projective maps preserve cross ratios:
Karteninfo:
Autor: janisborn
Oberthema: Informatik
Thema: Computergrafik
Schule / Uni: RWTH Aachen
Ort: Aachen
Veröffentlicht: 18.05.2022