From 27b11b6a01a4dd733d888c9259d4054dc9bf2f6e Mon Sep 17 00:00:00 2001
From: Jim Martens <github@2martens.de>
Date: Fri, 7 Apr 2017 14:12:18 +0200
Subject: [PATCH] [CCV] Finished load, modify and save source file

Signed-off-by: Jim Martens <github@2martens.de>
---
 ccv/sheet1/opencv/CMakeLists.txt          |  2 ++
 ccv/sheet1/opencv/loadModifySaveImage.cpp | 35 +++++++++++++++++++++++
 2 files changed, 37 insertions(+)
 create mode 100644 ccv/sheet1/opencv/loadModifySaveImage.cpp

diff --git a/ccv/sheet1/opencv/CMakeLists.txt b/ccv/sheet1/opencv/CMakeLists.txt
index eead99f..572f70d 100644
--- a/ccv/sheet1/opencv/CMakeLists.txt
+++ b/ccv/sheet1/opencv/CMakeLists.txt
@@ -1,3 +1,5 @@
 find_package( OpenCV REQUIRED )
 add_executable(displayImage displayImage.cpp)
+add_executable(loadModifySave loadModifySaveImage.cpp)
 target_link_libraries( displayImage ${OpenCV_LIBS} )
+target_link_libraries( loadModifySave ${OpenCV_LIBS} )
diff --git a/ccv/sheet1/opencv/loadModifySaveImage.cpp b/ccv/sheet1/opencv/loadModifySaveImage.cpp
new file mode 100644
index 0000000..33c526a
--- /dev/null
+++ b/ccv/sheet1/opencv/loadModifySaveImage.cpp
@@ -0,0 +1,35 @@
+//
+// Created by jim on 4/7/17.
+//
+#include <opencv2/opencv.hpp>
+
+using namespace cv;
+
+int main( int argc, char** argv )
+{
+  char* imageName = argv[1];
+
+  Mat image;
+  image = imread( imageName, 1 );
+
+  if( argc != 2 || !image.data )
+  {
+    printf( " No image data \n " );
+    return -1;
+  }
+
+  Mat gray_image;
+  cvtColor( image, gray_image, CV_BGR2GRAY );
+
+  imwrite( "Gray_Image.jpg", gray_image );
+
+  namedWindow( imageName, CV_WINDOW_NORMAL );
+  namedWindow( "Gray image", CV_WINDOW_NORMAL);
+
+  imshow( imageName, image );
+  imshow( "Gray image", gray_image );
+
+  waitKey(0);
+
+  return 0;
+}