by default, do not optimize pp

Author: lpanaf

glomap/estimators/bundle_adjustment.h

@@ -14,7 +14,7 @@ struct BundleAdjusterOptions : public OptimizationBaseOptions {
   bool optimize_rotations = true;
   bool optimize_translation = true;
   bool optimize_intrinsics = true;
-  bool optimize_principal_point = true;
+  bool optimize_principal_point = false;
   bool optimize_points = true;
 
   // Constrain the minimum number of views per track