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imgwarp add perf tests where src img much smaller then dst img + transparent border

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As the existing perf tests don't cover this use case well. Did not do the CONSTANT border type because for that use case the source image is usually projected over about the whole of the destination image so our ROI optimization wouldn't deliver much user value there.

Signed-off-by: Arne Baeyens <mail@arnebaeyens.com>
This commit is contained in:
Arne Baeyens
2026-08-22 19:12:05 +02:00
parent e451f59cda
commit c4e271c2dc
1 changed files with 59 additions and 0 deletions
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59
modules/imgproc/perf/perf_warp.cpp
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@@ -16,6 +16,8 @@ typedef TestBaseWithParam< tuple<MatType, Size, InterType, BorderMode> > TestWar
typedef TestBaseWithParam< tuple<Size, InterType, BorderMode, int> > TestWarpPerspective;
typedef TestBaseWithParam< tuple<Size, InterType, BorderMode, MatType> > TestWarpPerspectiveNear_t;
typedef TestBaseWithParam< tuple<MatType, Size, InterTypeExtended, BorderMode, RemapMode> > TestRemap;
typedef TestBaseWithParam< tuple<MatType, Size, InterType> > TestWarpAffineSmallSrc;
typedef TestBaseWithParam< tuple<MatType, Size, InterType> > TestWarpPerspectiveSmallSrc;
void update_map(const Mat& src, Mat& map_x, Mat& map_y, const int remapMode, bool relative = false );
@@ -307,4 +309,61 @@ PERF_TEST(Transform, getPerspectiveTransform_QR_1000)
SANITY_CHECK_NOTHING();
}
PERF_TEST_P( TestWarpAffineSmallSrc, WarpAffine_SmallSrc,
Combine(
Values(CV_8UC1, CV_8UC4),
Values( Size(512, 512) ),
InterType::all()
)
)
{
const Size szSrc(64, 64);
const int dataType = get<0>(GetParam());
const Size sz = get<1>(GetParam());
const int interType = get<2>(GetParam());
const int borderMode = BORDER_TRANSPARENT;
Mat src(szSrc, dataType), dst(sz, dataType, Scalar::all(0));
cvtest::fillGradient(src);
const double offset = (sz.width - szSrc.width) / 2.0;
const Mat warpMat = (Mat_<double>(2, 3) << 1, 0, offset,
0, 1, offset);
declare.in(src).out(dst);
TEST_CYCLE() warpAffine( src, dst, warpMat, sz, interType, borderMode );
SANITY_CHECK_NOTHING();
}
PERF_TEST_P( TestWarpPerspectiveSmallSrc, WarpPerspective_SmallSrc,
Combine(
Values(CV_8UC1, CV_8UC4),
Values( Size(512, 512) ),
InterType::all()
)
)
{
const Size szSrc(64, 64);
const int dataType = get<0>(GetParam());
const Size sz = get<1>(GetParam());
const int interType = get<2>(GetParam());
const int borderMode = BORDER_TRANSPARENT;
Mat src(szSrc, dataType), dst(sz, dataType, Scalar::all(0));
cvtest::fillGradient(src);
const float w = (float)szSrc.width, h = (float)szSrc.height;
const float off = (sz.width - szSrc.width) / 2.0f;
const Point2f sp[] = { Point2f(0, 0), Point2f(w, 0), Point2f(0, h), Point2f(w, h) };
const Point2f dp[] = { Point2f(off, off), Point2f(off + w, off),
Point2f(off, off + h), Point2f(off + w, off + h) };
const Mat warpMat = getPerspectiveTransform(sp, dp);
declare.in(src).out(dst);
TEST_CYCLE() warpPerspective( src, dst, warpMat, sz, interType, borderMode );
SANITY_CHECK_NOTHING();
}
} // namespace