I am working with my project. I use projective coordinates but when I convert to affine coordinates, I can't get it. Can anyone help me?
Projective Coordinates $(X,Y,Z)$ to Affine Coordinates $(X,Y)$:
- When $Z$ is not $0$ the point represented is the point (X/Z, Y/Z) in the Euclidean plane (Affine Coordinates)
- When $Z$ is $0$ the point represented is a point at “infinity”
If I am using projective cordinates, I get 3 points $(x_3,y_3,z_3)$, is that correct? So I must convert to affine coordinates $(x_3,y_3)$? Can I convert projective to present affine coordinates?