diff --git a/sourceCode/workpieceHolePositioning.cpp b/sourceCode/workpieceHolePositioning.cpp
index 3ee5724..aaf41b0 100644
--- a/sourceCode/workpieceHolePositioning.cpp
+++ b/sourceCode/workpieceHolePositioning.cpp
@@ -17,7 +17,8 @@
 //version 1.4.4 : 对1.4.3一个小的修正， 不影响结果
 //version 1.4.5 : 添加异物检测，通过errCode输出“有异物”和“无产品”结果
 //version 1.4.6 : 修正问题：4个孔组成工作时，需要4个孔的高度基本一致。
-std::string	m_strVersion = "1.4.6";
+//version 1.4.7 : 修正问题：在进行异物检测时，计算ZSliceTh时。添加Z计算的保护，防止异常值混入
+std::string	m_strVersion = "1.4.7";
 const char* wd_workpieceHolePositioningVersion(void)
 {
 	return m_strVersion.c_str();
@@ -139,7 +140,7 @@ int angleConditionDistanceSearch(
 	return result;
 }
 
-double _getMeanZ(std::vector<std::vector<double>>& quantiValue, SVzNL3DPoint seed, SVzNLRect& roi2D, double rectR)
+double _getMeanZ(std::vector<std::vector<double>>& quantiValue, SVzNL3DPoint seed, SVzNLRect& roi2D, double rectR, double zRange)
 {
 	int cols = (int)quantiValue.size();
 	int rows = (int)quantiValue[0].size();
@@ -149,6 +150,7 @@ double _getMeanZ(std::vector<std::vector<double>>& quantiValue, SVzNL3DPoint see
 	int win = (int)rectR;
 	int hist = 0;
 	double zSum = 0;
+	double refZ = seed.z;
 	for (int i = -win; i <= win; i++)
 	{
 		for (int j = -win; j <= win; j++)
@@ -159,8 +161,12 @@ double _getMeanZ(std::vector<std::vector<double>>& quantiValue, SVzNL3DPoint see
 			{
 				if (quantiValue[qx][qy] > 1e-4)
 				{
-					zSum += quantiValue[qx][qy];
-					hist++;
+					double zDiff = abs(quantiValue[qx][qy] - refZ);
+					if (zDiff < zRange)
+					{
+						zSum += quantiValue[qx][qy];
+						hist++;
+					}
 				}
 			}
 		}
@@ -864,10 +870,18 @@ void wd_workpieceHolePositioning(
 		SVzNL3DPoint center_p1p3 = { (p1.center.x + p3.center.x) / 2,(p1.center.y + p3.center.y) / 2, (p1.center.z + p3.center.z) / 2 };
 		SVzNL3DPoint center_p2p3 = { (p2.center.x + p3.center.x) / 2,(p2.center.y + p3.center.y) / 2, (p2.center.z + p3.center.z) / 2 };
 		double rectR = 5.0;
-		double z1 = _getMeanZ(quantiValue, center_p0p1, roi2D, rectR);
-		double z2 = _getMeanZ(quantiValue, center_p0p2, roi2D, rectR);
-		double z3 = _getMeanZ(quantiValue, center_p1p3, roi2D, rectR);
-		double z4 = _getMeanZ(quantiValue, center_p2p3, roi2D, rectR);
+		double z1 = _getMeanZ(quantiValue, center_p0p1, roi2D, rectR, workpiecePara.H/2);
+		if (z1 < 1e-4)
+			z1 = center_p0p1.z;
+		double z2 = _getMeanZ(quantiValue, center_p0p2, roi2D, rectR, workpiecePara.H / 2);
+		if (z2 < 1e-4)
+			z2 = center_p0p2.z;
+		double z3 = _getMeanZ(quantiValue, center_p1p3, roi2D, rectR, workpiecePara.H / 2);
+		if (z3 < 1e-4)
+			z3 = center_p1p3.z;
+		double z4 = _getMeanZ(quantiValue, center_p2p3, roi2D, rectR, workpiecePara.H / 2);
+		if (z4 < 1e-4)
+			z4 = center_p2p3.z;
 		
 		p0.center.z = (z1 + z2) / 2;
 		p1.center.z = (z1 + z3) / 2;
diff --git a/workpieceHolePositioning_test/workpieceHolePositioning_test.cpp b/workpieceHolePositioning_test/workpieceHolePositioning_test.cpp
index fd36b8f..f654f83 100644
--- a/workpieceHolePositioning_test/workpieceHolePositioning_test.cpp
+++ b/workpieceHolePositioning_test/workpieceHolePositioning_test.cpp
@@ -566,7 +566,7 @@ void TuoPuFa_holePosition_test(void)
 	};
 
 	SVzNLRange fileIdx[TPF_TEST_GROUP] = {
-		{6,6}, {1, 16}, {9,9}
+		{6,6}, {1, 16}, {13,13}
 	};
 
 	const char* ver = wd_workpieceHolePositioningVersion();