diff --git a/ccv/sheet1/CMakeLists.txt b/ccv/sheet1/CMakeLists.txt
index fa2d69a..7fcbb45 100644
--- a/ccv/sheet1/CMakeLists.txt
+++ b/ccv/sheet1/CMakeLists.txt
@@ -1,7 +1,5 @@
-cmake_minimum_required(VERSION 2.8)
-add_library(Rectangle Rectangle.cpp)
+CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 project(sheet1)
-add_executable(main main.cpp)
-target_link_libraries(main Rectangle)
-add_executable(hello hello.cpp)
-add_executable(AskInteger AskInteger.cpp)
+
+add_subdirectory(basics)
+add_subdirectory(opencv)
diff --git a/ccv/sheet1/AskInteger.cpp b/ccv/sheet1/basics/AskInteger.cpp
similarity index 100%
rename from ccv/sheet1/AskInteger.cpp
rename to ccv/sheet1/basics/AskInteger.cpp
diff --git a/ccv/sheet1/basics/CMakeLists.txt b/ccv/sheet1/basics/CMakeLists.txt
new file mode 100644
index 0000000..7f23cc2
--- /dev/null
+++ b/ccv/sheet1/basics/CMakeLists.txt
@@ -0,0 +1,5 @@
+add_library(Rectangle Rectangle.cpp)
+add_executable(main main.cpp)
+target_link_libraries(main Rectangle)
+add_executable(hello hello.cpp)
+add_executable(AskInteger AskInteger.cpp)
diff --git a/ccv/sheet1/Rectangle.cpp b/ccv/sheet1/basics/Rectangle.cpp
similarity index 100%
rename from ccv/sheet1/Rectangle.cpp
rename to ccv/sheet1/basics/Rectangle.cpp
diff --git a/ccv/sheet1/Rectangle.h b/ccv/sheet1/basics/Rectangle.h
similarity index 100%
rename from ccv/sheet1/Rectangle.h
rename to ccv/sheet1/basics/Rectangle.h
diff --git a/ccv/sheet1/hello.cpp b/ccv/sheet1/basics/hello.cpp
similarity index 100%
rename from ccv/sheet1/hello.cpp
rename to ccv/sheet1/basics/hello.cpp
diff --git a/ccv/sheet1/main.cpp b/ccv/sheet1/basics/main.cpp
similarity index 100%
rename from ccv/sheet1/main.cpp
rename to ccv/sheet1/basics/main.cpp
diff --git a/ccv/sheet1/opencv/CMakeLists.txt b/ccv/sheet1/opencv/CMakeLists.txt
new file mode 100644
index 0000000..74680c4
--- /dev/null
+++ b/ccv/sheet1/opencv/CMakeLists.txt
@@ -0,0 +1 @@
+add_executable(opencv opencv.cpp)
diff --git a/ccv/sheet1/opencv/opencv.cpp b/ccv/sheet1/opencv/opencv.cpp
new file mode 100644
index 0000000..4bca26d
--- /dev/null
+++ b/ccv/sheet1/opencv/opencv.cpp
@@ -0,0 +1,31 @@
+//
+// Created by jim on 4/4/17.
+//
+#include <stdio.h>
+#include <opencv2/opencv.hpp>
+
+using namespace cv;
+
+int main(int argc, char** argv )
+{
+  if ( argc != 2 )
+  {
+    printf("usage: DisplayImage.out <Image_Path>\n");
+    return -1;
+  }
+
+  Mat image;
+  image = imread( argv[1], 1 );
+
+  if ( !image.data )
+  {
+    printf("No image data \n");
+    return -1;
+  }
+  namedWindow("Display Image", WINDOW_AUTOSIZE );
+  imshow("Display Image", image);
+
+  waitKey(0);
+
+  return 0;
+}