diff options
Diffstat (limited to 'works/life/digital-image-process-lab')
6 files changed, 0 insertions, 244 deletions
diff --git a/works/life/digital-image-process-lab/.gitignore b/works/life/digital-image-process-lab/.gitignore deleted file mode 100644 index d8c2a8f..0000000 --- a/works/life/digital-image-process-lab/.gitignore +++ /dev/null @@ -1,2 +0,0 @@ -.clangd -build
\ No newline at end of file diff --git a/works/life/digital-image-process-lab/CMakeLists.txt b/works/life/digital-image-process-lab/CMakeLists.txt deleted file mode 100644 index 8a00ca5..0000000 --- a/works/life/digital-image-process-lab/CMakeLists.txt +++ /dev/null @@ -1,20 +0,0 @@ -cmake_minimum_required(VERSION 3.20) - -project(digital-image-process-lab) - -set(CMAKE_CXX_STANDARD 17) - -find_package(OpenCV REQUIRED) -include_directories(${OpenCV_INCLUDE_DIRS}) - -add_executable(HistogramEqulization HistogramEqulization.cpp) -target_link_libraries(HistogramEqulization ${OpenCV_LIBS}) - -add_executable(DiscreteFourierTransform DiscreteFourierTransform.cpp) -target_link_libraries(DiscreteFourierTransform ${OpenCV_LIBS}) - -add_executable(MorphologicalTransformation MorphologicalTransformation.cpp) -target_link_libraries(MorphologicalTransformation ${OpenCV_LIBS}) - -add_executable(HarrisCornerDetector HarrisCornerDetector.cpp) -target_link_libraries(HarrisCornerDetector ${OpenCV_LIBS}) diff --git a/works/life/digital-image-process-lab/DiscreteFourierTransform.cpp b/works/life/digital-image-process-lab/DiscreteFourierTransform.cpp deleted file mode 100644 index 31108bb..0000000 --- a/works/life/digital-image-process-lab/DiscreteFourierTransform.cpp +++ /dev/null @@ -1,63 +0,0 @@ -#include <opencv2/core.hpp> -#include <opencv2/highgui.hpp> -#include <opencv2/imgcodecs.hpp> -#include <opencv2/imgproc.hpp> - -#include <iostream> - -using namespace cv; - -int main(int argc, char **argv) { - if (argc != 2) { - std::cerr << "Please input an image file path as the only arg." - << std::endl; - return -1; - } - - const char *filename = argv[1]; - Mat I = imread(samples::findFile(filename), IMREAD_GRAYSCALE); - if (I.empty()) { - std::cout << "Error opening image" << std::endl; - return EXIT_FAILURE; - } - Mat padded; // expand input image to optimal size - int m = getOptimalDFTSize(I.rows); - int n = getOptimalDFTSize(I.cols); // on the border add zero values - copyMakeBorder(I, padded, 0, m - I.rows, 0, n - I.cols, BORDER_CONSTANT, - Scalar::all(0)); - Mat planes[] = {Mat_<float>(padded), Mat::zeros(padded.size(), CV_32F)}; - Mat complexI; - merge(planes, 2, complexI); // Add to the expanded another plane with zeros - dft(complexI, complexI); // this way the result may fit in the source matrix - // compute the magnitude and switch to logarithmic scale - // => log(1 + sqrt(Re(DFT(I))^2 + Im(DFT(I))^2)) - split(complexI, planes); // planes[0] = Re(DFT(I), planes[1] = Im(DFT(I)) - magnitude(planes[0], planes[1], planes[0]); // planes[0] = magnitude - Mat magI = planes[0]; - magI += Scalar::all(1); // switch to logarithmic scale - log(magI, magI); - // crop the spectrum, if it has an odd number of rows or columns - magI = magI(Rect(0, 0, magI.cols & -2, magI.rows & -2)); - // rearrange the quadrants of Fourier image so that the origin is at the - // image center - int cx = magI.cols / 2; - int cy = magI.rows / 2; - Mat q0(magI, Rect(0, 0, cx, cy)); // Top-Left - Create a ROI per quadrant - Mat q1(magI, Rect(cx, 0, cx, cy)); // Top-Right - Mat q2(magI, Rect(0, cy, cx, cy)); // Bottom-Left - Mat q3(magI, Rect(cx, cy, cx, cy)); // Bottom-Right - Mat tmp; // swap quadrants (Top-Left with Bottom-Right) - q0.copyTo(tmp); - q3.copyTo(q0); - tmp.copyTo(q3); - q1.copyTo(tmp); // swap quadrant (Top-Right with Bottom-Left) - q2.copyTo(q1); - tmp.copyTo(q2); - normalize(magI, magI, 0, 1, - NORM_MINMAX); // Transform the matrix with float values into a - // viewable image form (float between values 0 and 1). - imshow("Input Image", I); // Show the result - imshow("spectrum magnitude", magI); - waitKey(); - return EXIT_SUCCESS; -} diff --git a/works/life/digital-image-process-lab/HarrisCornerDetector.cpp b/works/life/digital-image-process-lab/HarrisCornerDetector.cpp deleted file mode 100644 index c7013be..0000000 --- a/works/life/digital-image-process-lab/HarrisCornerDetector.cpp +++ /dev/null @@ -1,49 +0,0 @@ -#include <opencv2/highgui.hpp> -#include <opencv2/imgproc.hpp> - -#include <iostream> - -cv::Mat src, src_gray; -int thresh = 100; -int max_thresh = 255; -const char *source_window = "Source image"; -const char *corners_window = "Corners detected"; -void cornerHarris_demo(int, void *); -int main(int argc, char **argv) { - cv::CommandLineParser parser(argc, argv, - "{@input | building.jpg | input image}"); - src = cv::imread(cv::samples::findFile(parser.get<cv::String>("@input"))); - if (src.empty()) { - std::cout << "Could not open or find the image!\n" << std::endl; - std::cout << "Usage: " << argv[0] << " <Input image>" << std::endl; - return -1; - } - cvtColor(src, src_gray, cv::COLOR_BGR2GRAY); - cv::namedWindow(source_window); - cv::createTrackbar("Threshold: ", source_window, &thresh, max_thresh, - cornerHarris_demo); - cv::imshow(source_window, src); - cornerHarris_demo(0, 0); - cv::waitKey(); - return 0; -} - -void cornerHarris_demo(int, void *) { - int blockSize = 2; - int apertureSize = 3; - double k = 0.04; - cv::Mat dst = cv::Mat::zeros(src.size(), CV_32FC1); - cv::cornerHarris(src_gray, dst, blockSize, apertureSize, k); - cv::Mat dst_norm, dst_norm_scaled; - normalize(dst, dst_norm, 0, 255, cv::NORM_MINMAX, CV_32FC1, cv::Mat()); - convertScaleAbs(dst_norm, dst_norm_scaled); - for (int i = 0; i < dst_norm.rows; i++) { - for (int j = 0; j < dst_norm.cols; j++) { - if ((int)dst_norm.at<float>(i, j) > thresh) { - circle(dst_norm_scaled, cv::Point(j, i), 5, cv::Scalar(0), 2, 8, 0); - } - } - } - cv::namedWindow(corners_window); - cv::imshow(corners_window, dst_norm_scaled); -} diff --git a/works/life/digital-image-process-lab/HistogramEqulization.cpp b/works/life/digital-image-process-lab/HistogramEqulization.cpp deleted file mode 100644 index 951a966..0000000 --- a/works/life/digital-image-process-lab/HistogramEqulization.cpp +++ /dev/null @@ -1,34 +0,0 @@ -#include <iostream> -#include <string> - -#include <opencv2/highgui.hpp> -#include <opencv2/imgcodecs.hpp> -#include <opencv2/imgproc.hpp> - -int main(int argc, char **argv) { - if (argc != 2) { - std::cerr << "Please input an image file path as the only arg." - << std::endl; - return -1; - } - - std::string file_name(argv[1]); - - cv::Mat src, dst; - - src = cv::imread(file_name, cv::IMREAD_COLOR); - if (src.empty()) { - std::cerr << "Failed to load image file: " << file_name << std::endl; - return -2; - } - - cv::cvtColor(src, src, cv::COLOR_BGR2GRAY); - - cv::equalizeHist(src, dst); - - cv::imshow("Source Image", src); - cv::imshow("Equalized Image", dst); - cv::waitKey(); - - return 0; -} diff --git a/works/life/digital-image-process-lab/MorphologicalTransformation.cpp b/works/life/digital-image-process-lab/MorphologicalTransformation.cpp deleted file mode 100644 index 9b1b097..0000000 --- a/works/life/digital-image-process-lab/MorphologicalTransformation.cpp +++ /dev/null @@ -1,76 +0,0 @@ -#include <opencv2/highgui.hpp> -#include <opencv2/imgproc.hpp> - -#include <iostream> - -cv::Mat src, erosion_dst, dilation_dst; - -int erosion_elem = 0; -int erosion_size = 0; -int dilation_elem = 0; -int dilation_size = 0; -int const max_elem = 2; -int const max_kernel_size = 21; - -void Erosion(int, void *); -void Dilation(int, void *); - -int main(int argc, char **argv) { - - cv::CommandLineParser parser(argc, argv, - "{@input | LinuxLogo.jpg | input image}"); - src = imread(cv::samples::findFile(parser.get<cv::String>("@input")), - cv::IMREAD_COLOR); - if (src.empty()) { - std::cout << "Could not open or find the image!\n" << std::endl; - std::cout << "Usage: " << argv[0] << " <Input image>" << std::endl; - return -1; - } - namedWindow("Erosion Demo", cv::WINDOW_AUTOSIZE); - namedWindow("Dilation Demo", cv::WINDOW_AUTOSIZE); - cv::moveWindow("Dilation Demo", src.cols, 0); - cv::createTrackbar("Element:\n 0: Rect \n 1: Cross \n 2: Ellipse", - "Erosion Demo", &erosion_elem, max_elem, Erosion); - cv::createTrackbar("Kernel size:\n 2n +1", "Erosion Demo", &erosion_size, - max_kernel_size, Erosion); - cv::createTrackbar("Element:\n 0: Rect \n 1: Cross \n 2: Ellipse", - "Dilation Demo", &dilation_elem, max_elem, Dilation); - cv::createTrackbar("Kernel size:\n 2n +1", "Dilation Demo", &dilation_size, - max_kernel_size, Dilation); - Erosion(0, 0); - Dilation(0, 0); - cv::waitKey(0); - return 0; -} - -void Erosion(int, void *) { - int erosion_type = 0; - if (erosion_elem == 0) { - erosion_type = cv::MORPH_RECT; - } else if (erosion_elem == 1) { - erosion_type = cv::MORPH_CROSS; - } else if (erosion_elem == 2) { - erosion_type = cv::MORPH_ELLIPSE; - } - cv::Mat element = getStructuringElement( - erosion_type, cv::Size(2 * erosion_size + 1, 2 * erosion_size + 1), - cv::Point(erosion_size, erosion_size)); - cv::erode(src, erosion_dst, element); - imshow("Erosion Demo", erosion_dst); -} - -void Dilation(int, void *) { - int dilation_type = 0; - if (dilation_elem == 0) { - dilation_type = cv::MORPH_RECT; - } else if (dilation_elem == 1) { - dilation_type = cv::MORPH_CROSS; - } else if (dilation_elem == 2) { - dilation_type = cv::MORPH_ELLIPSE; - } - cv::Mat element = getStructuringElement( - dilation_type, cv::Size(2 * dilation_size + 1, 2 * dilation_size + 1), - cv::Point(dilation_size, dilation_size)); - dilate(src, dilation_dst, element); - imshow("Dilation Demo", dilation_dst); -} |