This file contains commented 'ortho_compute.rst' debug output (appears when compiling i.ortho.photo with DEBUG option) to explain the algorithm of space resection by collinearity (WOLF 1983), to estimate the camera position. The initial values are fetched from photo.init. +---------------> CAMERA INFO Xp = 0.000000 Yp = 0.000000 CFL = 11.800000 +---------------> INITIAL CAMERA POSITION XC = 1652015.000000 YC = 5103337.000000 ZC = 914.000000 Omega = 0.000000 Phi = 0.349066 Kappa = 0.000000 +---------------> START ITERATIONS NOTES: the iterations runs for all ground control points (photo.2target) up to convergence (check CONV_LIMIT in orthoref.c). ITERATION = 0 epsilon: XC = 1652015.000000 YC = 5103337.000000 ZC = 914.000000 omega = 0.000000 phi = 0.349066 kappa = 0.000000 In Summation count = 0 image: x = -3.518434 y = -26.953172 z = -11.800000 object: X = 1652245.970342 Y = 5102078.718011 Z = 245.609802 residual: E1 = 13.095463 E2 = -0.087694 In Summation count = 1 [...] In Summation count = 27 image: x = 7.524751 y = -22.332348 z = -11.800000 object: X = 1652190.615439 Y = 5102020.440457 Z = 245.175095 residual: E1 = 0.649684 E2 = -4.998227 N: 0.023232 -0.007594 0.041207 -58.827999 -26.156341 7.749041 -0.007594 0.015323 -0.020863 32.738698 9.232664 8.427460 0.041207 -0.020863 0.182047 -254.246960 -101.644418 -40.353250 -58.827999 32.738698 -254.246960 368915.286868 143415.182361 58185.471806 -26.156341 9.232664 -101.644418 143415.182361 64586.787232 18735.832101 7.749041 8.427460 -40.353250 58185.471806 18735.832101 35399.758551 C: -14.836947 -8.539461 -84.342234 111925.164496 47871.166815 13222.204463 delta: XC = -1219.406696 YC = -1826.360825 ZC = -161.790295 omega = 0.001796 phi = -0.000135 kappa = 0.887921 ITERATION = 1 epsilon: [...] In Summation count = 27 image: x = 7.524751 y = -22.332348 z = -11.800000 object: X = 1652190.615439 Y = 5102020.440457 Z = 245.175095 residual: E1 = -7.024750 E2 = 4.126625 N: 0.819514 -0.307804 1.312018 255.346340 268.170123 -66.377078 -0.307804 0.464256 -0.933819 -366.240741 -66.133208 -27.950353 1.312018 -0.933819 3.294579 800.366961 379.031240 6.166083 255.346340 -366.240741 800.366961 559587.537244 -39821.873986 -18404.642985 268.170123 -66.133208 379.031240 -39821.873986 193768.925915 60.527766 -66.377078 -27.950353 6.166083 -18404.642985 60.527766 42735.824764 C: 0.233001 -0.036477 1.486549 -826.080200 -25274.180791 -100.692644 delta: XC = 1.027356 YC = 2.700360 ZC = 1.664251 omega = -0.000402 phi = -0.006783 kappa = 0.000602 FINAL VALUES: XC = 1652208.883240 YC = 5101866.174669 ZC = 108.036199 omega = 0.092695 phi = 0.267505 kappa = 0.260912 NOTES: These final values are the estimated camera position in target coordinates.