diff --git a/ECTrainer2/ECTrainer2.vcxproj b/ECTrainer2/ECTrainer2.vcxproj
index b12ed55..d6d983d 100644
--- a/ECTrainer2/ECTrainer2.vcxproj
+++ b/ECTrainer2/ECTrainer2.vcxproj
@@ -145,6 +145,7 @@
     <ClCompile Include="ECTrainer.cpp" />
     <ClCompile Include="ECTrainerGUI.cpp" />
     <ClCompile Include="main.cpp" />
+    <ClCompile Include="Marker.cpp" />
     <ClCompile Include="SceneCamera.cpp" />
     <ClCompile Include="Stimulus.cpp" />
   </ItemGroup>
@@ -152,6 +153,7 @@
     <ClInclude Include="cvui.h" />
     <ClInclude Include="ECTrainer.h" />
     <ClInclude Include="ECTrainerGUI.h" />
+    <ClInclude Include="Marker.h" />
     <ClInclude Include="myOpenCV.h" />
     <ClInclude Include="SceneCamera.h" />
     <ClInclude Include="Stimulus.h" />
diff --git a/ECTrainer2/ECTrainer2.vcxproj.filters b/ECTrainer2/ECTrainer2.vcxproj.filters
index 2d1e91e..e0d22b8 100644
--- a/ECTrainer2/ECTrainer2.vcxproj.filters
+++ b/ECTrainer2/ECTrainer2.vcxproj.filters
@@ -30,6 +30,9 @@
     <ClCompile Include="Stimulus.cpp">
       <Filter>ソース ファイル</Filter>
     </ClCompile>
+    <ClCompile Include="Marker.cpp">
+      <Filter>ソース ファイル</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="ECTrainerGUI.h">
@@ -50,5 +53,8 @@
     <ClInclude Include="Stimulus.h">
       <Filter>ヘッダー ファイル</Filter>
     </ClInclude>
+    <ClInclude Include="Marker.h">
+      <Filter>ヘッダー ファイル</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/ECTrainer2/ECTrainerGUI.cpp b/ECTrainer2/ECTrainerGUI.cpp
index 26e48c0..7cee977 100644
--- a/ECTrainer2/ECTrainerGUI.cpp
+++ b/ECTrainer2/ECTrainerGUI.cpp
@@ -19,7 +19,7 @@
 	GetDisplayInfo();
 	// GUI�E�C���h�E
 	cvui::init(WIN_MAIN);
-	_MainFrame.create(cv::Size(640, 400), CV_8UC3);
+	_MainFrame.create(MAIN_FRAME_SIZE, CV_8UC3);
 	// �h���񎦃E�C���h�E
 	cv::namedWindow(WIN_DISP, cv::WINDOW_NORMAL | cv::WINDOW_OPENGL);
 	if (_Displays.size() > 1) {
diff --git a/ECTrainer2/ECTrainerGUI.h b/ECTrainer2/ECTrainerGUI.h
index 735f859..b6a5431 100644
--- a/ECTrainer2/ECTrainerGUI.h
+++ b/ECTrainer2/ECTrainerGUI.h
@@ -12,7 +12,10 @@
 private:
 	const cv::String WIN_DISP = "ECTrainer Display";
 	const cv::String WIN_MAIN = "Eye Contact Trainer";
-	const cv::Size SCENE_BUFFER_SIZE = cv::Size(320, 180);
+	//const cv::Size MAIN_FRAME_SIZE = cv::Size(640, 400);
+	//const cv::Size SCENE_BUFFER_SIZE = cv::Size(320, 180);
+	const cv::Size MAIN_FRAME_SIZE = cv::Size(1600, 1000);
+	const cv::Size SCENE_BUFFER_SIZE = cv::Size(1280, 720);
 	const int KEY_ESC = 27;
 
 	ECTrainer* _pEct;
diff --git a/ECTrainer2/Marker.cpp b/ECTrainer2/Marker.cpp
new file mode 100644
index 0000000..ea43524
--- /dev/null
+++ b/ECTrainer2/Marker.cpp
@@ -0,0 +1,25 @@
+#include "Marker.h"
+
+void Marker::Generate(cv::Size imgsize) {
+	// �萔�̌v�Z
+	float width = imgsize.height * HEIGHT / imgsize.width;
+	float itvX = (1.0 - 2 * MARGIN.x - width) / 2;
+	float itvY = (1.0 - 2 * MARGIN.y - HEIGHT) / 2;
+	// ���W�v�Z
+	for (int iy = 0; iy < 3; iy++) {
+		for (int ix = 0; ix < 3; ix++) {
+			if (ix == 1 && iy == 1) continue;	// ���S�ɂ̓}�[�J�[��u���Ȃ�
+
+			std::vector<cv::Point2f> marker;
+			marker.push_back(cv::Point2f(
+				MARGIN.x + itvX * ix, MARGIN.y + itvY * iy));
+			marker.push_back(cv::Point2f(
+				MARGIN.x + itvX * ix + width, MARGIN.y + itvY * iy));
+			marker.push_back(cv::Point2f(
+				MARGIN.x + itvX * ix + width, MARGIN.y + itvY * iy + HEIGHT));
+			marker.push_back(cv::Point2f(
+				MARGIN.x + itvX * ix, MARGIN.y + itvY * iy + HEIGHT));
+			_Corners.push_back(marker);
+		}
+	}
+}
diff --git a/ECTrainer2/Marker.h b/ECTrainer2/Marker.h
new file mode 100644
index 0000000..c532f22
--- /dev/null
+++ b/ECTrainer2/Marker.h
@@ -0,0 +1,13 @@
+#pragma once
+
+#include "myOpenCV.h"
+#include <vector>
+
+class Marker
+{
+	std::vector<std::vector<cv::Point2f>> _Corners;
+	const cv::Point2f MARGIN = cv::Size2f(0.5, 0.5);
+	const float HEIGHT = 0.1F;
+public:
+	void Generate(cv::Size imgsize);
+};
diff --git a/ECTrainer2/SceneCamera.cpp b/ECTrainer2/SceneCamera.cpp
index bbcddfe..52f54fd 100644
--- a/ECTrainer2/SceneCamera.cpp
+++ b/ECTrainer2/SceneCamera.cpp
@@ -29,6 +29,20 @@
 		// �V�[���B�e
 		cv::Mat scene;
 		_SceneCam >> scene;
+
+		cv::Ptr<cv::aruco::Dictionary> dictionary = cv::aruco::getPredefinedDictionary(cv::aruco::DICT_4X4_50);
+		std::vector<int> mids;
+		std::vector<std::vector<cv::Point2f>> corners;
+		cv::Ptr<cv::aruco::DetectorParameters> parameters = cv::aruco::DetectorParameters::create();
+		cv::aruco::detectMarkers(scene, dictionary, corners, mids, parameters);
+		cv::aruco::drawDetectedMarkers(scene, corners, mids);
+		if (corners.size() > 0) {
+			cv::putText(scene, "0", cv::Point((int)corners[0][0].x, (int)corners[0][0].y), cv::FONT_HERSHEY_PLAIN, 2.0, CV_RGB(255, 0, 0));
+			cv::putText(scene, "1", corners[0][1], cv::FONT_HERSHEY_PLAIN, 2.0, CV_RGB(255, 0, 0));
+			cv::putText(scene, "2", corners[0][2], cv::FONT_HERSHEY_PLAIN, 2.0, CV_RGB(255, 0, 0));
+			cv::putText(scene, "3", corners[0][3], cv::FONT_HERSHEY_PLAIN, 2.0, CV_RGB(255, 0, 0));
+		}
+
 		_pEct->SetSceneBuffer(scene);
 	}
 
diff --git a/ECTrainer2/Stimulus.cpp b/ECTrainer2/Stimulus.cpp
index d3c3144..5be6491 100644
--- a/ECTrainer2/Stimulus.cpp
+++ b/ECTrainer2/Stimulus.cpp
@@ -30,6 +30,13 @@
 
 // �h���摜�J�n
 void Stimulus::StartImage() {
-	cv::Mat img = cv::imread("../images/lena.jpg");
+	//cv::Mat img = cv::imread("../images/lena.jpg");
+	cv::Mat img = cv::imread("../images/face_F_L_E.png");
 	_pEct->SetDispBuffer(img);
 }
+
+// �摜�Ƀ}�[�J�[��t�^
+void Stimulus::AddMarker(cv::Mat& img) {
+	cv::Ptr<cv::aruco::Dictionary> dictionary = cv::aruco::getPredefinedDictionary(cv::aruco::DICT_4X4_50);
+	cv::aruco::drawMarker(dictionary, 23, 200, img, 1);
+}
diff --git a/ECTrainer2/Stimulus.h b/ECTrainer2/Stimulus.h
index cd877ab..a61245a 100644
--- a/ECTrainer2/Stimulus.h
+++ b/ECTrainer2/Stimulus.h
@@ -14,6 +14,7 @@
 	Stimulus(ECTrainer* pEct);
 	bool Init();
 	bool MainLoop();
+	void AddMarker(cv::Mat& img);
 	void StartCalib();
 	void StartImage();
 	void StartMovie();
diff --git a/ECTrainer2/myOpenCV.h b/ECTrainer2/myOpenCV.h
index b21806a..e53a66e 100644
--- a/ECTrainer2/myOpenCV.h
+++ b/ECTrainer2/myOpenCV.h
@@ -7,6 +7,7 @@
 // �w�b�_�[�t�@�C��
 #pragma warning(disable: 4819)
 #include <opencv2/opencv.hpp>
+#include <opencv2/aruco.hpp>
 #pragma warning(default: 4819)
 
 // �o�[�W�����擾