  The implementation details of factorizing the 3x4 projection matrices of
linear cameras into their left matrix factors and the 4x4 homogeneous
central(also parallel for infinite center cases) projection factors are
presented in this work. Any full row rank 3x4 real matrix can be factorized
into such basic matrices which will be called LC factors.
  A further extension to multiple view midpoint triangulation, for both pinhole
and affine camera cases, is also presented based on such camera factorizations.
