diff --git a/ECTrainer2/Marker.cpp b/ECTrainer2/Marker.cpp
index be1343c..63d3986 100644
--- a/ECTrainer2/Marker.cpp
+++ b/ECTrainer2/Marker.cpp
@@ -6,34 +6,33 @@
 #endif
 
 // �R���X�g���N�^
-Marker::Marker() : _Size(0) 
+Marker::Marker() 
 {
 	_Dictionary = cv::aruco::getPredefinedDictionary(cv::aruco::DICT_4X4_50);
+	Generate(IMGSIZE);
 }
 
 // �}�[�J�[���W�̌v�Z
 void Marker::Generate(cv::Size imgsize) {
 	// �萔�̌v�Z
-	_Size = (int)(imgsize.height * HEIGHT);
-	float width = imgsize.height * HEIGHT / imgsize.width;
-	float itvX = (1.0F - 2.0F * MARGIN.x - width) / 2.0F;
-	float itvY = (1.0F - 2.0F * MARGIN.y - HEIGHT) / 2.0F;
+	//_Size = (int)(imgsize.height * HEIGHT);
+	//float width = HEIGHT;
+	int itvX = imgsize.width - (SIZE.x + MARGIN.x * 2);
+	int itvY = (imgsize.height - (SIZE.x + MARGIN.x * 2)) / 3;
 	// ���W�v�Z
 	_Corners.clear();
-	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);
+	for (int ix = 0; ix < 2; ix++) {
+		for (int iy = 0; iy < 4; iy++) {
+			std::vector<cv::Point2f> vertex;
+			vertex.push_back(cv::Point2f(
+				(float)(MARGIN.x + itvX * ix), (float)(MARGIN.y + itvY * iy)));
+			vertex.push_back(cv::Point2f(
+				(float)(MARGIN.x + itvX * ix + SIZE.x), (float)(MARGIN.y + itvY * iy)));
+			vertex.push_back(cv::Point2f(
+				(float)(MARGIN.x + itvX * ix + SIZE.x), (float)(MARGIN.y + itvY * iy + SIZE.y)));
+			vertex.push_back(cv::Point2f(
+				(float)(MARGIN.x + itvX * ix), (float)(MARGIN.y + itvY * iy + SIZE.y)));
+			_Corners.push_back(vertex);
 			//printf("marker %d : (%f,%f) (%f,%f) (%f,%f) (%f,%f)\n", 
 			//	(int)_Corners.size(), marker[0].x, marker[0].y
 			//	, marker[1].x, marker[1].y
@@ -45,7 +44,7 @@
 
 // �}�[�J�[��`�悷��
 void Marker::DrawMarker(cv::Mat& img) {
-	if (_Size < 1) {
+	if (_Corners.size() < 1) {
 #ifdef _DEBUG
 		std::cout << "Marker isn't generated." << std::endl;
 #endif
@@ -55,12 +54,12 @@
 	cv::Mat marker;
 	int outMargin = (int)(img.rows * OUTER_MARGIN);
 	for (int i = 0; i < _Corners.size(); i++) {
-		cv::aruco::drawMarker(_Dictionary, i + 1, _Size, marker, 1);
+		cv::aruco::drawMarker(_Dictionary, i + 1, SIZE.x, marker, 1);
 		cv::cvtColor(marker, marker, cv::COLOR_GRAY2BGR);
 		cv::Point p = cv::Point((int)(_Corners[i][0].x * img.cols), (int)(_Corners[i][0].y * img.rows));
-		cv::Mat roi2(img, cv::Rect(p.x - outMargin, p.y - outMargin, _Size + outMargin * 2, _Size + outMargin * 2));
+		cv::Mat roi2(img, cv::Rect(p.x - outMargin, p.y - outMargin, SIZE.x + outMargin * 2, SIZE.y + outMargin * 2));
 		roi2 = cv::Scalar(255, 255, 255);
-		cv::Mat roi(img, cv::Rect(p, cv::Size(_Size, _Size)));
+		cv::Mat roi(img, cv::Rect(p, cv::Size(SIZE)));
 		marker.copyTo(roi);
 	}
 }
@@ -68,19 +67,19 @@
 // �}�[�J�[�̌��o
 bool Marker::Detect(cv::Mat& img) {
 	// �}�[�J�[�̌��o
-	std::vector<int> mids;
+	std::vector<int> markerIds;
 	std::vector<std::vector<cv::Point2f>> corners;
 	cv::Ptr<cv::aruco::DetectorParameters> parameters = cv::aruco::DetectorParameters::create();
-	cv::aruco::detectMarkers(img, _Dictionary, corners, mids, parameters);
-	cv::aruco::drawDetectedMarkers(img, corners, mids);
+	cv::aruco::detectMarkers(img, _Dictionary, corners, markerIds, parameters);
+	cv::aruco::drawDetectedMarkers(img, corners, markerIds);
 
 	// �Ή��_�̗�
 	std::vector<cv::Point2f> cornerW, cornerC;
 	for (int i = 0; i < corners.size(); i++) {
-		if (mids[i]-1 < _Corners.size()) {
+		if (markerIds[i] - 1 < _Corners.size()) {
 			for (int j = 0; j < corners[i].size(); j++) {
 				cornerC.push_back(corners[i][j]);
-				cornerW.push_back(_Corners[mids[i] - 1][j]);
+				cornerW.push_back(_Corners[markerIds[i] - 1][j]);
 			}
 		}
 		//printf("(%f,%f) ", corners[i][0].x, corners[i][0].y);
@@ -89,19 +88,21 @@
 	if (cornerC.size() < 4) return false;
 
 	// �z���O���t�B�s��̎Z�o
-	_Homography = findHomography(cornerC, cornerW);
-	return !_Homography.empty();
+	_HomographyV2I = findHomography(cornerC, cornerW);
+	_HomographyI2V = findHomography(cornerW, cornerC);
+	return !(_HomographyV2I.empty() || _HomographyI2V.empty());
 }
 
-// ���W�ϊ��i����摜���W�����K���h���摜���W�j
+// ���W�ϊ��i����摜���W���摜���W�j
 cv::Point2f Marker::ConvV2I(cv::Point gazeV) {
-	if (_Homography.empty()) return cv::Point2f(-1.F, -1.F);
+	if (_HomographyV2I.empty()) return cv::Point2f(-1.F, -1.F);
 	cv::Mat gazeVe = (cv::Mat_<double>(3, 1) << gazeV.x, gazeV.y, 1);
-	cv::Mat gazeIe = _Homography * gazeVe;
+	cv::Mat gazeIe = _HomographyV2I * gazeVe;
 	double* pgazeIe = gazeIe.ptr<double>(0);
 	float x = (float)(*pgazeIe / *(pgazeIe + 2));
 	float y = (float)(*(pgazeIe + 1) / *(pgazeIe + 2));
 	//std::cout << x << "," << y << std::endl;
-	if (x < 0 || x > 1.F || y < 0 || y > 1.F) return cv::Point2f(-1.F, -1.F);
+	if (x < 0 || x >= (float)IMGSIZE.width || y < 0 || y >= IMGSIZE.height) 
+		return cv::Point2f(-1.F, -1.F);
 	return cv::Point2f(x, y);
 }
diff --git a/ECTrainer2/Marker.h b/ECTrainer2/Marker.h
index 5202645..3338a23 100644
--- a/ECTrainer2/Marker.h
+++ b/ECTrainer2/Marker.h
@@ -5,14 +5,16 @@
 
 class Marker
 {
-	const cv::Point2f MARGIN = cv::Size2f(0.03F, 0.03F);
-	const float OUTER_MARGIN = 0.01F;
-	const float HEIGHT = 0.1F;
+	const cv::Size IMGSIZE= cv::Size(1920, 1080); // �摜�T�C�Y
+	const cv::Point MARGIN = cv::Point(10, 10);
+	const cv::Point SIZE = cv::Point(100, 100);
+	const float OUTER_MARGIN = 0.01F;	// �}�[�J�[�`��p
 
 	std::vector<std::vector<cv::Point2f>> _Corners;
 	cv::Ptr<cv::aruco::Dictionary> _Dictionary;
-	int _Size;
-	cv::Mat _Homography;
+	//int _Size;
+	cv::Mat _HomographyV2I;
+	cv::Mat _HomographyI2V;
 
 public:
 	Marker();