Add support for EXIFs from agremo camera (#1264)

SuperBuild/cmake/External-OpenSfM.cmake

@@ -9,7 +9,7 @@ ExternalProject_Add(${_proj_name}
   #--Download step--------------
   DOWNLOAD_DIR      ${SB_DOWNLOAD_DIR}
   GIT_REPOSITORY    https://github.com/OpenDroneMap/OpenSfM/
-  GIT_TAG           246
+  GIT_TAG           248
   #--Update/Patch step----------
   UPDATE_COMMAND    git submodule update --init --recursive
   #--Configure step-------------

opendm/photo.py

@@ -342,7 +342,15 @@ class ODM_Photo:
 
     def float_values(self, tag):
         if isinstance(tag.values, list):
-            return [float(v.num) / float(v.den) if v.den != 0 else None for v in tag.values]
+            result = []
+            for v in tag.values:
+                if isinstance(v, int):
+                    result.append(float(v))
+                elif v.den != 0:
+                    result.append(float(v.num) / float(v.den))
+                else:
+                    result.append(None)
+            return result
         else:
             return [float(tag.values.num) / float(tag.values.den) if tag.values.den != 0 else None]