Affine Camera
•Affine camera assumes that the variation in depth of the points is small compared to the depth of the centroid of the point set. •The origin of X,Y,Z axis is at the centroid of 3D points.
•Projection matrix:
In this research, we use affine camera model, which assumes the variation in depth of the points is small compared to the depth of the centroid of the point set.
Affine camera model is a generalization of orthographic,
weak perspective, and paraperspective projections.