diff --git a/openbr/plugins/frames.cpp b/openbr/plugins/frames.cpp
index fb7f507..586bcae 100644
--- a/openbr/plugins/frames.cpp
+++ b/openbr/plugins/frames.cpp
@@ -52,6 +52,11 @@ private:
     {
         (void) stream;
     }
+
+    void init()
+    {
+        TimeVaryingTransform::init();
+    }
 };
 
 BR_REGISTER(Transform, AggregateFrames)
diff --git a/openbr/plugins/gui.cpp b/openbr/plugins/gui.cpp
index 93927b0..af2d9fe 100644
--- a/openbr/plugins/gui.cpp
+++ b/openbr/plugins/gui.cpp
@@ -350,6 +350,8 @@ public:
         if (!Globals->useGui)
             return;
 
+        TimeVaryingTransform::init();
+
         if (displayBuffer)
             delete displayBuffer;
         displayBuffer = new QPixmap();
@@ -530,6 +532,7 @@ public:
         target_wait = 1000.0 / targetFPS;
         timer.start();
         last_time = timer.elapsed();
+        TimeVaryingTransform::init();
     }
 
 protected:
@@ -583,6 +586,7 @@ public:
     {
         initialized = false;
         framesSeen = 0;
+        TimeVaryingTransform::init();
     }
 
 protected:
diff --git a/share/openbr/models b/share/openbr/models
index dccddf4..a73d510 160000
--- a/share/openbr/models
+++ b/share/openbr/models
@@ -1 +1 @@
-Subproject commit dccddf4dd3a5239911807beeec39308f8890b1e4
+Subproject commit a73d51013ea05f263e88a28539393159fff2183e