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Merge pull request #11608 from take1014:hist_11544

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This commit is contained in:
Alexander Alekhin 2018-05-31 16:44:02 +00:00
commit 0349e8c9af
2 changed files with 34 additions and 0 deletions
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4
modules/imgproc/src/histogram.cpp
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@ -821,6 +821,10 @@ static bool ipp_calchist(const Mat &image, Mat &hist, int histSize, const float*
return false;
#endif
// IPP_DISABLE_HISTOGRAM - https://github.com/opencv/opencv/issues/11544
if (uniform && (ranges[0][1] - ranges[0][0]) != histSize)
return false;
Mat ihist = hist;
if(accumulate)
ihist.create(1, &histSize, CV_32S);

30
modules/imgproc/test/test_histograms.cpp
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@ -1918,5 +1918,35 @@ TEST(Imgproc_Hist_CalcBackProject, accuracy) { CV_CalcBackProjectTest test; test
TEST(Imgproc_Hist_CalcBackProjectPatch, accuracy) { CV_CalcBackProjectPatchTest test; test.safe_run(); }
TEST(Imgproc_Hist_BayesianProb, accuracy) { CV_BayesianProbTest test; test.safe_run(); }
TEST(Imgproc_Hist_Calc, calcHist_regression_11544)
{
cv::Mat1w m = cv::Mat1w::zeros(10, 10);
int n_images = 1;
int channels[] = { 0 };
cv::Mat mask;
cv::MatND hist1, hist2;
cv::MatND hist1_opt, hist2_opt;
int dims = 1;
int hist_size[] = { 1000 };
float range1[] = { 0, 900 };
float range2[] = { 0, 1000 };
const float* ranges1[] = { range1 };
const float* ranges2[] = { range2 };
setUseOptimized(false);
cv::calcHist(&m, n_images, channels, mask, hist1, dims, hist_size, ranges1);
cv::calcHist(&m, n_images, channels, mask, hist2, dims, hist_size, ranges2);
setUseOptimized(true);
cv::calcHist(&m, n_images, channels, mask, hist1_opt, dims, hist_size, ranges1);
cv::calcHist(&m, n_images, channels, mask, hist2_opt, dims, hist_size, ranges2);
for(int i = 0; i < 1000; i++)
{
EXPECT_EQ(hist1.at<float>(i, 0), hist1_opt.at<float>(i, 0)) << i;
EXPECT_EQ(hist2.at<float>(i, 0), hist2_opt.at<float>(i, 0)) << i;
}
}
}} // namespace
/* End Of File */