diff --git a/OpenCV_test/main.cpp b/OpenCV_test/main.cpp
deleted file mode 100644
index 4ca28b2..0000000
--- a/OpenCV_test/main.cpp
+++ /dev/null
@@ -1,31 +0,0 @@
-#include <opencv2/opencv.hpp>
-#include <iostream>
-using namespace cv;
-
-int main(int argc,char ** argv){
-    //If no image file name, throw a error
-    if(argc != 2){
-        std::cout<<"Usage:OpenCV_test <filename>"<<std::endl;
-        return -1;
-    }
-
-    std::cout<<argv[1]<<std::endl;
-
-    //Create a new image
-    Mat image;
-    image = imread(argv[1],1);
-
-    //Check if image loaded
-    if(!image.data){
-        std::cout<<"No Image data"<<std::endl;
-        return -1;
-    }
-
-    //Create a window to show image
-    namedWindow(argv[1],WINDOW_NORMAL);
-    imshow(argv[1],image);
-
-    waitKey(0);
-
-    return 0;
-}
\ No newline at end of file
diff --git a/OpenCV_test/.vscode/settings.json b/OpenCV_test/test1_openimage/.vscode/settings.json
similarity index 100%
rename from OpenCV_test/.vscode/settings.json
rename to OpenCV_test/test1_openimage/.vscode/settings.json
diff --git a/OpenCV_test/CMakeLists.txt b/OpenCV_test/test1_openimage/CMakeLists.txt
similarity index 100%
rename from OpenCV_test/CMakeLists.txt
rename to OpenCV_test/test1_openimage/CMakeLists.txt
diff --git a/OpenCV_test/test1_openimage/main.cpp b/OpenCV_test/test1_openimage/main.cpp
new file mode 100644
index 0000000..95ef2b1
--- /dev/null
+++ b/OpenCV_test/test1_openimage/main.cpp
@@ -0,0 +1,46 @@
+#include <opencv2/opencv.hpp>
+#include <iostream>
+#include <fstream>
+#include <cstring>
+using namespace cv;
+
+int main(int argc,char ** argv){
+    std::fstream infile;
+    char filename[128];
+
+    infile.open("filename.txt",std::ios_base::in);
+    if(infile.is_open()){
+        infile.read(filename, sizeof(filename));
+    }
+
+    // //If no image file name, throw a error
+    // if(argc != 2){
+    //     std::cout<<"Usage:OpenCV_test <filename>"<<std::endl;
+    //     return -1;
+    // }
+
+    // std::cout<<argv[1]<<std::endl;
+
+    //Create a new image
+    Mat image, image2;
+    image = imread(filename, IMREAD_COLOR);
+    image2 = imread(filename, IMREAD_GRAYSCALE);
+
+    //Check if image loaded
+    if(!image.data){
+        std::cout<<"No Image data"<<std::endl;
+        return -1;
+    }
+
+    //Create a window to show image
+    namedWindow(filename,WINDOW_NORMAL);
+    imshow(filename,image);
+
+    namedWindow("Gray image", WINDOW_NORMAL);
+    imshow("Gray image",image2);
+
+    waitKey(0);
+    destroyAllWindows();
+
+    return 0;
+}
\ No newline at end of file