Use an updated version of OpenSfM for better memory management

Former-commit-id: 71ce34662e

SuperBuild/cmake/External-OpenSfM.cmake

@@ -8,8 +8,8 @@ ExternalProject_Add(${_proj_name}
   STAMP_DIR         ${_SB_BINARY_DIR}/stamp
   #--Download step--------------
   DOWNLOAD_DIR      ${SB_DOWNLOAD_DIR}
-  URL               https://github.com/mapillary/OpenSfM/archive/v0.1.0.tar.gz
-  URL_MD5           0C46922C61F7CA54D272FBB4CC7FFBBB
+  URL               https://github.com/mapillary/OpenSfM/archive/0a5a6f07b66088e9b63bddaf29bb8f49dd39f9e4.zip
+  URL_MD5           2ed2c4a31801ddd57740261aaaf97ac9
   #--Update/Patch step----------
   UPDATE_COMMAND    ""
   #--Configure step-------------

opendm/config.py

@@ -139,7 +139,7 @@ def config():
 
     parser.add_argument('--opensfm-processes',
                         metavar='<positive integer>',
-                        default=1,
+                        default=context.num_cores,
                         type=int,
                         help=('The maximum number of processes to use in dense '
                               'reconstruction. Default: %(default)s'))