3차원에서의 투영변환

Overscript[X,^]^′ = <Overscript[n,^], Overscript[V,^] >Overscript[X,^] - Overscript[V,^] <Overscript[n,^], Overscript[X,^] >

(case1) :     <Overscript[n,^], Overscript[X,^] > = 0 ; Overscript[X,^]^′ = <Overscript[n,^], Overscript[V,^] >Overscript[X,^] = Overscript[X,^] ;