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45 #include "precomp.hpp"
49 using namespace cv::ocl;
50 using namespace cvtest;
51 using namespace testing;
55 void blendLinearGold(const cv::Mat &img1, const cv::Mat &img2, const cv::Mat &weights1, const cv::Mat &weights2, cv::Mat &result_gold)
57 result_gold.create(img1.size(), img1.type());
59 int cn = img1.channels();
61 for (int y = 0; y < img1.rows; ++y)
63 const float *weights1_row = weights1.ptr<float>(y);
64 const float *weights2_row = weights2.ptr<float>(y);
65 const T *img1_row = img1.ptr<T>(y);
66 const T *img2_row = img2.ptr<T>(y);
67 T *result_gold_row = result_gold.ptr<T>(y);
69 for (int x = 0; x < img1.cols * cn; ++x)
71 float w1 = weights1_row[x / cn];
72 float w2 = weights2_row[x / cn];
73 result_gold_row[x] = static_cast<T>((img1_row[x] * w1 + img2_row[x] * w2) / (w1 + w2 + 1e-5f));
78 PARAM_TEST_CASE(Blend, cv::Size, MatType/*, UseRoi*/)
91 TEST_P(Blend, Accuracy)
93 int depth = CV_MAT_DEPTH(type);
95 cv::Mat img1 = randomMat(size, type, 0.0, depth == CV_8U ? 255.0 : 1.0);
96 cv::Mat img2 = randomMat(size, type, 0.0, depth == CV_8U ? 255.0 : 1.0);
97 cv::Mat weights1 = randomMat(size, CV_32F, 0, 1);
98 cv::Mat weights2 = randomMat(size, CV_32F, 0, 1);
100 cv::ocl::oclMat gimg1(img1), gimg2(img2), gweights1(weights1), gweights2(weights2);
103 cv::ocl::blendLinear(gimg1, gimg2, gweights1, gweights2, dst);
106 dst.download(result);
108 blendLinearGold<uchar>(img1, img2, weights1, weights2, result_gold);
110 blendLinearGold<float>(img1, img2, weights1, weights2, result_gold);
112 EXPECT_MAT_NEAR(result_gold, result, CV_MAT_DEPTH(type) == CV_8U ? 1.f : 1e-5f);
115 INSTANTIATE_TEST_CASE_P(OCL_ImgProc, Blend, Combine(
117 testing::Values(MatType(CV_8UC1), MatType(CV_8UC3), MatType(CV_8UC4), MatType(CV_32FC1), MatType(CV_32FC4))