From e0fe3cce719b3db03e5fb73c52c4eae1dfb97139 Mon Sep 17 00:00:00 2001
From: Matthias Grundmann <grundmann.matthias@gmail.com>
Date: Mon, 10 Apr 2017 12:07:28 -0700
Subject: [PATCH] Update autotuned_index.h

Add missing sstream header for decl of std::ostringstream in line 104
---
 modules/flann/include/opencv2/flann/autotuned_index.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/modules/flann/include/opencv2/flann/autotuned_index.h b/modules/flann/include/opencv2/flann/autotuned_index.h
index 6ffb9297c4..30f8b92a81 100644
--- a/modules/flann/include/opencv2/flann/autotuned_index.h
+++ b/modules/flann/include/opencv2/flann/autotuned_index.h
@@ -30,6 +30,8 @@
 #ifndef OPENCV_FLANN_AUTOTUNED_INDEX_H_
 #define OPENCV_FLANN_AUTOTUNED_INDEX_H_
 
+#include <sstream>
+
 #include "general.h"
 #include "nn_index.h"
 #include "ground_truth.h"