From f83a76cdebee199cd921fa7749ead1c52e78f2eb Mon Sep 17 00:00:00 2001
From: Brian Park <brianspark@hotmail.com>
Date: Tue, 21 Oct 2014 22:47:49 -0700
Subject: [PATCH 1/3] add input paramter checking that verifies the existance
 of the input files to stero_match example

---
 samples/cpp/stereo_match.cpp | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/samples/cpp/stereo_match.cpp b/samples/cpp/stereo_match.cpp
index f5f77cf3d..ad4670f73 100644
--- a/samples/cpp/stereo_match.cpp
+++ b/samples/cpp/stereo_match.cpp
@@ -14,6 +14,7 @@
 #include "opencv2/core/utility.hpp"
 
 #include <stdio.h>
+#include <sys/stat.h>
 
 using namespace cv;
 
@@ -143,6 +144,19 @@ int main(int argc, char** argv)
         return -1;
     }
 
+    struct stat stat_buffer;
+    if (stat(img1_filename, &stat_buffer) != 0)
+    {
+        printf("Command-line parameter error: could not find the first input image file\n");
+        return -1;
+    }
+
+    if (stat(img2_filename, &stat_buffer) != 0)
+    {
+        printf("Command-line parameter error: could not find the second input image file\n");
+        return -1;
+    }
+
     if( (intrinsic_filename != 0) ^ (extrinsic_filename != 0) )
     {
         printf("Command-line parameter error: either both intrinsic and extrinsic parameters must be specified, or none of them (when the stereo pair is already rectified)\n");

From 9e3a2cbab2a91c4f6f1cd6e0f64916e5c1eed856 Mon Sep 17 00:00:00 2001
From: Brian Park <brianspark@hotmail.com>
Date: Mon, 3 Nov 2014 21:38:15 -0800
Subject: [PATCH 2/3] check input paramter by checking the image size

---
 samples/cpp/stereo_match.cpp | 26 ++++++++++++--------------
 1 file changed, 12 insertions(+), 14 deletions(-)

diff --git a/samples/cpp/stereo_match.cpp b/samples/cpp/stereo_match.cpp
index ad4670f73..1ec65d6e9 100644
--- a/samples/cpp/stereo_match.cpp
+++ b/samples/cpp/stereo_match.cpp
@@ -144,19 +144,6 @@ int main(int argc, char** argv)
         return -1;
     }
 
-    struct stat stat_buffer;
-    if (stat(img1_filename, &stat_buffer) != 0)
-    {
-        printf("Command-line parameter error: could not find the first input image file\n");
-        return -1;
-    }
-
-    if (stat(img2_filename, &stat_buffer) != 0)
-    {
-        printf("Command-line parameter error: could not find the second input image file\n");
-        return -1;
-    }
-
     if( (intrinsic_filename != 0) ^ (extrinsic_filename != 0) )
     {
         printf("Command-line parameter error: either both intrinsic and extrinsic parameters must be specified, or none of them (when the stereo pair is already rectified)\n");
@@ -173,7 +160,18 @@ int main(int argc, char** argv)
     Mat img1 = imread(img1_filename, color_mode);
     Mat img2 = imread(img2_filename, color_mode);
 
-    if( scale != 1.f )
+    if (img1.empty())
+    {
+        printf("Command-line parameter error: could not load the first input image file\n");
+        return -1;
+    }
+    if (img2.empty())
+    {
+        printf("Command-line parameter error: could not load the second input image file\n");
+        return -1;
+    }
+
+    if (scale != 1.f)
     {
         Mat temp1, temp2;
         int method = scale < 1 ? INTER_AREA : INTER_CUBIC;

From e4fa217a62911d353519a0a7267c94bf46f59a35 Mon Sep 17 00:00:00 2001
From: Brian Park <brianspark@hotmail.com>
Date: Wed, 5 Nov 2014 20:12:18 -0800
Subject: [PATCH 3/3] remove the unnecessary header file

---
 samples/cpp/stereo_match.cpp | 1 -
 1 file changed, 1 deletion(-)

diff --git a/samples/cpp/stereo_match.cpp b/samples/cpp/stereo_match.cpp
index 1ec65d6e9..fa5ee7bad 100644
--- a/samples/cpp/stereo_match.cpp
+++ b/samples/cpp/stereo_match.cpp
@@ -14,7 +14,6 @@
 #include "opencv2/core/utility.hpp"
 
 #include <stdio.h>
-#include <sys/stat.h>
 
 using namespace cv;