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3rdparty/opencv-4.5.4/modules/gapi/test/gapi_smoke_test.cpp 2.56 KB
f4334277   Hu Chunming   提交3rdparty
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  // This file is part of OpenCV project.
  // It is subject to the license terms in the LICENSE file found in the top-level directory
  // of this distribution and at http://opencv.org/license.html.
  //
  // Copyright (C) 2018 Intel Corporation
  
  
  #include "test_precomp.hpp"
  
  namespace opencv_test
  {
  
  TEST(GAPI, Mat_Create_NoLink)
  {
      cv::Mat m1;
      cv::Mat m2 = m1;
      m2.create(32, 32, CV_8U);
  
      EXPECT_NE(m1.rows, m2.rows);
      EXPECT_NE(m1.cols, m2.cols);
      EXPECT_NE(m1.data, m2.data);
  }
  
  TEST(GAPI, Mat_Recreate)
  {
      cv::Mat m1 = cv::Mat::zeros(480, 640, CV_8U);
      m1.at<uchar>(0, 0) = 128;
      cv::Mat m2 = m1;
  
      EXPECT_EQ(m1.rows, m2.rows);
      EXPECT_EQ(m1.cols, m2.cols);
      EXPECT_EQ(m1.data, m2.data);
      EXPECT_EQ(m1.at<uchar>(0, 0), m2.at<uchar>(0, 0));
  
      // Calling "create" with the same meta is NOOP - both m1 and m2 are the same
      m1.create(480, 640, CV_8U);
      EXPECT_EQ(m1.rows, m2.rows);
      EXPECT_EQ(m1.cols, m2.cols);
      EXPECT_EQ(m1.data, m2.data);
      EXPECT_EQ(m1.at<uchar>(0, 0), m2.at<uchar>(0, 0));
  
      // Calling "create" on m2 with different meta doesn't update original m1
      // Now m1 and m2 are distinct
      m2.create(720, 1280, CV_8U);
      m2.at<uchar>(0, 0) = 64; // Initialize 0,0 element since m2 is a new buffer
      EXPECT_NE(m1.rows, m2.rows);
      EXPECT_NE(m1.cols, m2.cols);
      EXPECT_NE(m1.data, m2.data);
      EXPECT_NE(m1.at<uchar>(0, 0), m2.at<uchar>(0, 0));
  
      // What if a Mat is created from handle?
      uchar data[] = {
          32, 0, 0,
           0, 0, 0,
           0, 0, 0
      };
      cv::Mat m3(3, 3, CV_8U, data);
      cv::Mat m4 = m3;
      EXPECT_EQ(m3.rows, m4.rows);
      EXPECT_EQ(m3.cols, m4.cols);
      EXPECT_EQ(m3.data, m4.data);
      EXPECT_EQ(data, m3.data);
      EXPECT_EQ(data, m4.data);
      EXPECT_EQ(m3.at<uchar>(0, 0), m4.at<uchar>(0, 0));
  
      // cv::Mat::create must be NOOP if we don't change the meta,
      // even if the original mat is created from handle.
      m4.create(3, 3, CV_8U);
      EXPECT_EQ(m3.rows, m4.rows);
      EXPECT_EQ(m3.cols, m4.cols);
      EXPECT_EQ(m3.data, m4.data);
      EXPECT_EQ(data, m3.data);
      EXPECT_EQ(data, m4.data);
      EXPECT_EQ(m3.at<uchar>(0, 0), m4.at<uchar>(0, 0));
  }
  
  TEST(GAPI, EmptyOutMat)
  {
      cv::Mat in_mat = cv::Mat(480, 640, CV_8U, cv::Scalar(64));
  
      cv::GComputation cc([]()
      {
          cv::GMat in;
          cv::GMat out = in + in;
          return cv::GComputation(in, out);
      });
  
      cv::Mat out;
      cc.apply(in_mat, out);
  
      EXPECT_EQ(640, out.cols);
      EXPECT_EQ(480, out.rows);
      EXPECT_EQ(CV_8U, out.type());
      EXPECT_EQ(0, cvtest::norm(out, (in_mat+in_mat), NORM_INF));
  }
  
  }