diff --git a/App_Code/CommonUse.cs b/App_Code/CommonUse.cs
index 12813ab..1f7e572 100644
--- a/App_Code/CommonUse.cs
+++ b/App_Code/CommonUse.cs
@@ -444,7 +444,7 @@ public class CommonUse
             // bool bo = (rect.Width / rect.Height >= ratio && (rect.Width > 3 && rect.Height > 2) && (area > 200 && area <= 4500));
             //bool bo = ((rect.Width > 3 && rect.Height > 2) && (area > 80 && area <= 15000));
             //bool bo = pxNums > 130 && pxNums < 300;
-            bool bo = (approx_curve.Size == 4 && CvInvoke.IsContourConvex(approx_curve) && (rect.Width > 15 && rect.Height > 15) && (area > 550 && area < 2000) && (rect.Width < 50 && rect.Height < 50) && pxNums > 550);
+            bool bo = (approx_curve.Size == 4 && CvInvoke.IsContourConvex(approx_curve) && (rect.Width > 10 && rect.Height > 10) && (area > 350 && area < 2000) && (rect.Width < 50 && rect.Height < 50) && pxNums > 200);
             if (bo)
             {
                 selected_contours.Push(contours[i]);