From 476094ad5af304375bb557e447b129a6bb615cb4 Mon Sep 17 00:00:00 2001
From: jsxyhelu <jsxyhelu@foxmail.com>
Date: Tue, 23 Jun 2020 20:39:55 +0800
Subject: [PATCH] =?UTF-8?q?Use=E2=80=9C=20moms=E2=80=9D=20replace=20"conto?=
 =?UTF-8?q?urArea"?=
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double area = moms.m00;
is same as
double area = contourArea(contours[contourIdx]);
Not to mention
"moms" already calculated here,"contourArea" should not apply
---
 modules/features2d/src/blobdetector.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/features2d/src/blobdetector.cpp b/modules/features2d/src/blobdetector.cpp
index c973b09764..d07e8bae83 100644
--- a/modules/features2d/src/blobdetector.cpp
+++ b/modules/features2d/src/blobdetector.cpp
@@ -257,7 +257,7 @@ void SimpleBlobDetectorImpl::findBlobs(InputArray _image, InputArray _binaryImag
         {
             std::vector < Point > hull;
             convexHull(contours[contourIdx], hull);
-            double area = contourArea(contours[contourIdx]);
+            double area = moms.m00;
             double hullArea = contourArea(hull);
             if (fabs(hullArea) < DBL_EPSILON)
                 continue;