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Add diamond structuring element

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This commit is contained in:
Kavyansh Tyagi
2025-06-11 15:54:29 +05:30
parent fcc76c120f
commit 452882c007
4 changed files with 36 additions and 2 deletions
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modules/imgproc/src/morph.dispatch.cpp
+16 -1
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@@ -138,7 +138,7 @@ Mat getStructuringElement(int shape, Size ksize, Point anchor)
int r = 0, c = 0;
double inv_r2 = 0;
CV_Assert( shape == MORPH_RECT || shape == MORPH_CROSS || shape == MORPH_ELLIPSE );
CV_Assert( shape == MORPH_RECT || shape == MORPH_CROSS || shape == MORPH_ELLIPSE || shape == MORPH_DIAMOND );
anchor = normalizeAnchor(anchor, ksize);
@@ -151,6 +151,11 @@ Mat getStructuringElement(int shape, Size ksize, Point anchor)
c = ksize.width/2;
inv_r2 = r ? 1./((double)r*r) : 0;
}
else if( shape == MORPH_DIAMOND )
{
r = ksize.height/2;
c = ksize.width/2;
}
Mat elem(ksize, CV_8U);
@@ -163,6 +168,16 @@ Mat getStructuringElement(int shape, Size ksize, Point anchor)
j2 = ksize.width;
else if( shape == MORPH_CROSS )
j1 = anchor.x, j2 = j1 + 1;
else if( shape == MORPH_DIAMOND )
{
int dy = std::abs(i - r);
if( dy <= r )
{
int dx = r - dy;
j1 = std::max( c - dx, 0 );
j2 = std::min( c + dx + 1, ksize.width );
}
}
else
{
int dy = i - r;