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[Sheet3] Finished exercises 1 through 3

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Signed-off-by: Jim Martens <github@2martens.de>
This commit is contained in:
Jim Martens
2017-04-25 15:56:41 +02:00
parent cc1084ec77
commit 376aa0997c
5 changed files with 136 additions and 0 deletions
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ccv/sheet3/exercise1.cpp Normal file
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#include <opencv2/opencv.hpp>
int main(int argc, char** argv ) {
// exercise 1
// matrix M
float m[] = {1.0, 1.0, 1.0, 1.0, 2.0, 1.0, 1.0, 1.0, 1.0};
cv::Mat M(3, 3, CV_32FC1, m);
// gaussian filter kernel
float g[] = {1, 2, 1, 2, 4, 2, 1, 2, 1};
cv::Mat G(3, 3, CV_32FC1, g);
G = G * 0.0625;
// output G
std::cout << G << std::endl << std::endl;
// convolve 1.
cv::Mat M_1;
cv::filter2D(M, M_1, -1, G, cv::Point(-1, -1), 0, cv::BORDER_CONSTANT);
// output M_1
std::cout << M_1 << std::endl << std::endl;
// convolve 2.
float g_1[] = {1, 2, 1};
cv::Mat G_1(1, 3, CV_32FC1, g_1);
G_1 = G_1 * 0.25;
float g_2[] = {1, 2, 1};
cv::Mat G_2(3, 1, CV_32FC1, g_2);
G_2 = G_2 * 0.25;
// output G_1, G_2
std::cout << G_1 << std::endl << std::endl;
std::cout << G_2 << std::endl << std::endl;
cv::Mat M_2;
cv::Mat M_3;
cv::filter2D(M, M_2, -1, G_1, cv::Point(-1, -1), 0, cv::BORDER_CONSTANT);
cv::filter2D(M_2, M_3, -1, G_2, cv::Point(-1, -1), 0, cv::BORDER_CONSTANT);
// output M_3
std::cout << M_3 << std::endl << std::endl;
// convolve 3.
cv::Mat M_4;
cv::GaussianBlur(M, M_4, cv::Size(3, 3), 0, 0, cv::BORDER_CONSTANT);
std::cout << M_4 << std::endl << std::endl;
}