diff --git a/camCalib/camCalib.cpp b/camCalib/camCalib.cpp
index 9c7ee0d..510e1a3 100644
--- a/camCalib/camCalib.cpp
+++ b/camCalib/camCalib.cpp
@@ -504,7 +504,7 @@ int main()
                 sprintf_s(filename, "%slaser_rotate_enlarge_%03d_subpixData.txt", calibDataPath[grp], index);
                 saveSubpixData(filename, pts2d);
             }
-            for (int i = 0, i_max = pts2d.size(); i < i_max; i++)
+            for (int i = 0, i_max = (int)pts2d.size(); i < i_max; i++)
             {
                 cv::Point2f a_subPix = pts2d[i];
                 int row = (int)(a_subPix.y + 0.5);
diff --git a/camCalib/lineDetection_steger.cpp b/camCalib/lineDetection_steger.cpp
index 3d97022..26cae93 100644
--- a/camCalib/lineDetection_steger.cpp
+++ b/camCalib/lineDetection_steger.cpp
@@ -436,7 +436,7 @@ void computePointSubpix(
 			if ((subpix.x >= 0) && (subpix.y >= 0))
 			{
 				subpix.x += 0.5; //图像中的像素位置表示的是像素是左下角，而此处像素坐标是指向像素中间位置，所以有0.5像素差
-				subpix.x -= 0.5;  //此处图像的Y坐标系方向与通常坐标系的方向相反
+				subpix.y -= 0.5;  //此处图像的Y坐标系方向与通常坐标系的方向相反
 				posSubpix.push_back(subpix);
 				doSubPix = -1;
 			}