Check camera validity using tranformation matrix

Former-commit-id: 78cd65c050

.gitignore

@@ -4,7 +4,12 @@ include/
 lib/
 logs/
 share/
+
+
 src/
+
+!modules/*
+
 download/
 
 SuperBuild/build/

modules/odm_georef/src/Georef.cpp

@@ -192,7 +192,16 @@ Vec3 GeorefCamera::getReferencedPos()
 
 bool GeorefCamera::isValid()
 {
-    return focalLength_ != 0 && k1_ != 0 && k2_ != 0;
+    return focalLength_ != 0 &&
+           ((*transform_)(0, 0) != 0 ||
+           (*transform_)(0, 1) != 0 ||
+           (*transform_)(0, 2) != 0 ||
+           (*transform_)(1, 0) != 0 ||
+           (*transform_)(1, 1) != 0 ||
+           (*transform_)(1, 2) != 0 ||
+           (*transform_)(2, 0) != 0 ||
+           (*transform_)(2, 1) != 0 ||
+           (*transform_)(2, 2) != 0);
 }
 
 std::ostream& operator<<(std::ostream &os, const GeorefCamera &cam)