opencv/modules/imgproc/test/test_inpaint.cpp

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#include "test_precomp.hpp"
#include <string>

using namespace cv;

class CV_InpaintTest : public cvtest::BaseTest
{
public:
    CV_InpaintTest();
    ~CV_InpaintTest();    
protected:    
    void run(int);
};

CV_InpaintTest::CV_InpaintTest()
{
}
CV_InpaintTest::~CV_InpaintTest() {}

void CV_InpaintTest::run( int )
{
    string folder = string(ts->get_data_path()) + "inpaint/";    
    Mat orig = imread(folder + "orig.jpg");    
    Mat exp1 = imread(folder + "exp1.png");
    Mat exp2 = imread(folder + "exp2.png");
    Mat mask = imread(folder + "mask.png");    

    if (orig.empty() || exp1.empty() || exp2.empty() || mask.empty())
    {
        ts->set_failed_test_info( cvtest::TS::FAIL_INVALID_TEST_DATA );  
        return;
    }

    Mat inv_mask;    
    mask.convertTo(inv_mask, CV_8UC3, -1.0, 255.0);
            
    Mat mask1ch;
    cv::cvtColor(mask, mask1ch, CV_BGR2GRAY);

    Mat test = orig.clone();
    test.setTo(Scalar::all(255), mask1ch);   

    Mat res1, res2;
    inpaint( test, mask1ch, res1, 5, CV_INPAINT_NS );
    inpaint( test, mask1ch, res2, 5, CV_INPAINT_TELEA );    
    
    imwrite("d:/exp1.png", res1);
    imwrite("d:/exp2.png", res2);
    
    Mat diff1, diff2;
    absdiff( orig, res1, diff1 );
    absdiff( orig, res2, diff2 );
        
    double n1 = norm(diff1.reshape(1), NORM_INF, inv_mask.reshape(1));
    double n2 = norm(diff2.reshape(1), NORM_INF, inv_mask.reshape(1));
  
    if (n1 != 0 || n2 != 0)
    {        
        ts->set_failed_test_info( cvtest::TS::FAIL_MISMATCH );
        return;
    }

    absdiff( exp1, res1, diff1 );
    absdiff( exp2, res2, diff2 );

    n1 = norm(diff1.reshape(1), NORM_INF, mask.reshape(1));
    n2 = norm(diff2.reshape(1), NORM_INF, mask.reshape(1));

    const int jpeg_thres = 3;
    if (n1 > jpeg_thres || n2 > jpeg_thres)   
    {
        ts->set_failed_test_info( cvtest::TS::FAIL_BAD_ACCURACY );       
        return;
    }

    ts->set_failed_test_info(cvtest::TS::OK);
}

TEST(Imgproc_Inpaint, regression) { CV_InpaintTest test; test.safe_run(); }