169 173 # 508 518 # 752 768 # 508 518 # width, height
0.073017958693 0.005450012583 -0.002873791528 -0.043510762835 # x trans
-0.005419999094 0.070459277908 -0.002400914763 -0.314335641699 # y proj
 -0.00160178   0.01293940  -0.04628122   0.00000000 # depth
 -0.00016018   0.00129394  -0.00462812   1.00000000 # perspective factor
