please answer it shortly and clearly

m 11 (e) The combined homogeneous camera matrix M with 11 unknown param- eters, m12 m13 m14 m21 m22 m23 m24 m32 m33 takes world coordinates, X, onto image coordinates x. Show that given a set of point pairs {Xi, Xi}, the camera matrix can be solved using linear least squares. What is the minimum number of points required to obtain M? [7] m31 1 m 11 (e) The combined homogeneous camera matrix M with 11 unknown param- eters, m12 m13 m14 m21 m22 m23 m24 m32 m33 takes world coordinates, X, onto image coordinates x. Show that given a set of point pairs {Xi, Xi}, the camera matrix can be solved using linear least squares. What is the minimum number of points required to obtain M? [7] m31 1