1. A method of representing stereoscopic images comprising: a first image represented as coordinates A 1 ,. .. , A r ; a second image represented as coordinates B 1 ,. .. , B s ; transforming coordinates A 1 ,. .. , A r into color coordinates C 1 ,C 2 ,C 3 using transformation Gc; transforming coordinates B 1 ,. .. , B s into coordinates Y L using transformation G Y ; brightness Y C of said first image is represented in coordinates C 1 ,C 2 ,C 3 ; brightness Y Y of said second image is represented in coordinates Y L ; and wherein the brightness contrast of said first and second images represented in coordinates C 1 ,C 2 ,C 3 ,Y L are balanced for like subject matter in said first and second images.