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test: fix tolerance

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cv::rand result is not bitexact for floating-point numbers
This commit is contained in:
Alexander Alekhin 2016-10-18 16:53:37 +03:00
parent 7793299e53
commit abad2ca76c
1 changed files with 6 additions and 2 deletions
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8
modules/core/perf/perf_convertTo.cpp
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@ -26,12 +26,16 @@ PERF_TEST_P( Size_DepthSrc_DepthDst_Channels_alpha, convertTo,
int channels = get<3>(GetParam());
double alpha = get<4>(GetParam());
int maxValue = 255;
Mat src(sz, CV_MAKETYPE(depthSrc, channels));
randu(src, 0, 255);
randu(src, 0, maxValue);
Mat dst(sz, CV_MAKETYPE(depthDst, channels));
int runs = (sz.width <= 640) ? 8 : 1;
TEST_CYCLE_MULTIRUN(runs) src.convertTo(dst, depthDst, alpha);
SANITY_CHECK(dst, alpha == 1.0 ? 1e-12 : 1e-7);
double eps = depthSrc <= CV_32S ? 1e-12 : (FLT_EPSILON * maxValue);
eps = eps * std::max(1.0, fabs(alpha));
SANITY_CHECK(dst, eps);
}