: . , . , . , , .
, 2D- /. , , ( , , , ). (a_i, b_i), ,
P = [ px 0 0 0 ]
[ 0 py 0 0 ]
[ 0 0 pz pw]
[ 0 0 s 0 ], s = +/-1
. , ,
a_i = px x_i / (s z_i)
b_i = py y_i / (s z_i)
(x_i, y_i, z_i) - 3D- .
, ( ), (x0_i, y0_i, z0_i). C. - . V.
V = R C + v 1^T (*)
1^T - , R , V .
V : { s a_1 z_1 / px, s b_1 z_1 / py, z_1 } ..
(*) z_i, R V.
- ,
R z_i - , , 2D- ( , ).
- , ; , ,
(*); .