diff --git a/src/algorithm/ImageProcess.cpp b/src/algorithm/ImageProcess.cpp
index fb5b78e..f551549 100644
--- a/src/algorithm/ImageProcess.cpp
+++ b/src/algorithm/ImageProcess.cpp
@@ -70,10 +70,17 @@ cv::Mat ImageProcess::findCircle(const Mat &srcImg, Point2f& center, double &rad
 	int nIndex = -1;
 	float centerX = 0;
 	float centerY = 0;
+	double tmpmaxR = 0;
 	for (int i = 0; i < EDCircle.size(); i++)
 	{
 		int startX = EDCircle[i].center.x - EDCircle[i].r;
 		int startY = EDCircle[i].center.y - EDCircle[i].r;
+		if (EDCircle[i].r > tmpmaxR)
+		{
+			centerX = EDCircle[i].center.x * REAIZE;
+			centerY = EDCircle[i].center.y * REAIZE;
+			tmpmaxR = EDCircle[i].r;
+		}
 		if (startX < 0 || startY < 0)
 			continue;
 		if (EDCircle[i].center.x + EDCircle[i].r > bBaseX || EDCircle[i].center.y + EDCircle[i].r > bBaseY)
@@ -204,10 +211,18 @@ cv::Mat ImageProcess::findCircleByBackground(const Mat &srcImg, const Mat& backg
 	int nIndex = -1;
 	float centerX = 0;
 	float centerY = 0;
+	double tmpmaxR = 0;
 	for (int i = 0; i < EDCircle.size(); i++)
 	{
 		int startX = EDCircle[i].center.x - EDCircle[i].r;
 		int startY = EDCircle[i].center.y - EDCircle[i].r;
+		if (EDCircle[i].r > tmpmaxR)
+		{
+			centerX = EDCircle[i].center.x * REAIZE;
+			centerY = EDCircle[i].center.y * REAIZE;
+			tmpmaxR = EDCircle[i].r;
+		}
+
 		if (startX < 0 || startY < 0)
 			continue;
 		if (EDCircle[i].center.x + EDCircle[i].r > bBaseX || EDCircle[i].center.y + EDCircle[i].r > bBaseY)
diff --git a/src/tpMain/cryptokey/lpCryptokey.cpp b/src/tpMain/cryptokey/lpCryptokey.cpp
index 4f38d13..ff66ae0 100644
--- a/src/tpMain/cryptokey/lpCryptokey.cpp
+++ b/src/tpMain/cryptokey/lpCryptokey.cpp
@@ -87,6 +87,15 @@ bool lpCheckKey::checkLinese()
 	}
 	QSettings settingKey("Leaper_Register");
 	QString strKey = settingKey.value("key").toString();
+	bool bRegister = settingKey.value("register", false).toBool();
+	QString serialNo = settingKey.value("serialNo").toString();
+	if (m_SerialNo != serialNo)
+	{
+		if (bRegister == true)
+		{
+			return true;
+		}
+	}
 
 	QByteArray lineseData = genLinese(m_SerialNo.toLatin1());
 	if (lineseData == strKey)
@@ -102,6 +111,8 @@ bool lpCheckKey::checkLinese(QString serialNo, QString linese)
 	{
 		QSettings settingKey("Leaper_Register");
 		settingKey.setValue("key", linese);
+		settingKey.setValue("register", true);
+		settingKey.setValue("serialNo", serialNo);
 		return true;
 	}
 	else