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imgproc: fixed bug from intersectConvexConvex

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Added checks for all of vertices from each contour instead of checking
only for the first vertex.
This commit is contained in:
Thang Tran
2019-04-30 15:43:31 +02:00
parent 2da00161c5
commit 1aff378ae8
2 changed files with 285 additions and 5 deletions
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modules/imgproc/src/geometry.cpp
+25 -5
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@@ -563,21 +563,41 @@ float cv::intersectConvexConvex( InputArray _p1, InputArray _p2, OutputArray _p1
return 0.f;
}
if( pointPolygonTest(_InputArray(fp1, n), fp2[0], false) >= 0 )
bool intersected = false;
// check if all of fp2's vertices is inside/on the edge of fp1.
int nVertices = 0;
for (int i=0; i<m; ++i)
nVertices += pointPolygonTest(_InputArray(fp1, n), fp2[i], false) >= 0;
// if all of fp2's vertices is inside/on the edge of fp1.
if (nVertices == m)
{
intersected = true;
result = fp2;
nr = m;
}
else if( pointPolygonTest(_InputArray(fp2, m), fp1[0], false) >= 0 )
else // otherwise check if fp2 is inside fp1.
{
result = fp1;
nr = n;
nVertices = 0;
for (int i=0; i<n; ++i)
nVertices += pointPolygonTest(_InputArray(fp2, m), fp1[i], false) >= 0;
// // if all of fp1's vertices is inside/on the edge of fp2.
if (nVertices == n)
{
intersected = true;
result = fp1;
nr = n;
}
}
else
if (!intersected)
{
_p12.release();
return 0.f;
}
area = (float)contourArea(_InputArray(result, nr), false);
}