Use“ moms” replace "contourArea"

jsxyhelu · jsxyhelu · commit 476094ad5af3 · 2020-07-10T11:05:24.000Z
double area = moms.m00;
is same as
double area = contourArea(contours[contourIdx]);
Not to mention
"moms" already calculated here,"contourArea" should not apply
diff --git 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;

Original file line number	Diff line number	Diff line change
`@@ -257,7 +257,7 @@ void SimpleBlobDetectorImpl::findBlobs(InputArray _image, InputArray _binaryImag`
`257`	`257`	`{`
`258`	`258`	`std::vector < Point > hull;`
`259`	`259`	`convexHull(contours[contourIdx], hull);`
`260`		`- double area = contourArea(contours[contourIdx]);`
	`260`	`+ double area = moms.m00;`
`261`	`261`	`double hullArea = contourArea(hull);`
`262`	`262`	`if (fabs(hullArea) < DBL_EPSILON)`
`263`	`263`	`continue;`