Compare commits

...

2 Commits

Author SHA1 Message Date
USW
007ed02f59 svm과 머신러닝 2025-05-28 12:11:05 +09:00
USW
d65e1aeed5 14끝 2025-05-21 12:11:58 +09:00
25 changed files with 1940 additions and 0 deletions

View File

@@ -89,6 +89,26 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "hog", "ch13\hog\hog.vcxproj
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "QRCode", "Homework\QRCode\QRCode.vcxproj", "{8F1A6584-B3EF-405A-83BF-F394848DA563}"
EndProject
Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "ch14", "ch14", "{9DEF9106-146A-4E03-B4E3-9CF41F9844DC}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "corners", "ch14\corners\corners.vcxproj", "{C0C4BB05-468C-4115-8347-711EF03A1B65}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "keypoints", "ch14\keypoints\keypoints.vcxproj", "{0A03E1F6-AE40-4F86-B0E6-152B7D6C7820}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "matching", "ch14\matching\matching.vcxproj", "{2345724D-8858-4CBF-A8E4-98947BC56DF1}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "stitching", "Homework\stitching\stitching.vcxproj", "{16DCB3B7-0FDC-43AD-902E-196F0F94DD02}"
EndProject
Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "ch15", "ch15", "{CCC97EA5-97BB-4D09-BF37-E5E4A2121DCF}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "knnplane", "ch15\knnplane\knnplane.vcxproj", "{276520F2-0DBF-4CED-8C0C-B51ED16D493E}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "knndigits", "ch15\knndigits\knndigits.vcxproj", "{123FE185-68CE-4E6E-B5D6-384980997681}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "svmplane", "ch15\svmplane\svmplane.vcxproj", "{773FC1DE-F4AD-4771-B624-1A6997E8EA6A}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "svmdigits", "ch15\svmdigits\svmdigits.vcxproj", "{3FAC1456-4F85-4254-97D9-86667B64B217}"
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Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|x64 = Debug|x64
@@ -337,6 +357,70 @@ Global
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{8F1A6584-B3EF-405A-83BF-F394848DA563}.Release|x86.ActiveCfg = Release|Win32
{8F1A6584-B3EF-405A-83BF-F394848DA563}.Release|x86.Build.0 = Release|Win32
{C0C4BB05-468C-4115-8347-711EF03A1B65}.Debug|x64.ActiveCfg = Debug|x64
{C0C4BB05-468C-4115-8347-711EF03A1B65}.Debug|x64.Build.0 = Debug|x64
{C0C4BB05-468C-4115-8347-711EF03A1B65}.Debug|x86.ActiveCfg = Debug|Win32
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{773FC1DE-F4AD-4771-B624-1A6997E8EA6A}.Release|x86.Build.0 = Release|Win32
{3FAC1456-4F85-4254-97D9-86667B64B217}.Debug|x64.ActiveCfg = Debug|x64
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GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
@@ -372,6 +456,14 @@ Global
{6B37E9B3-8726-49BC-91B9-3763A6F6EBE9} = {960B2CF4-8CBC-4433-A6D8-D3BA9ACB190F}
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{8F1A6584-B3EF-405A-83BF-F394848DA563} = {E583E257-9FCE-4A4B-A554-8514F982D1BF}
{C0C4BB05-468C-4115-8347-711EF03A1B65} = {9DEF9106-146A-4E03-B4E3-9CF41F9844DC}
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{2345724D-8858-4CBF-A8E4-98947BC56DF1} = {9DEF9106-146A-4E03-B4E3-9CF41F9844DC}
{16DCB3B7-0FDC-43AD-902E-196F0F94DD02} = {E583E257-9FCE-4A4B-A554-8514F982D1BF}
{276520F2-0DBF-4CED-8C0C-B51ED16D493E} = {CCC97EA5-97BB-4D09-BF37-E5E4A2121DCF}
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View File

@@ -0,0 +1,18 @@
#include <iostream>
#include "opencv2/opencv.hpp"
using namespace std;
using namespace cv;
int main(int argc, char* argv[]) {
if (argc < 3) {
cerr << "useage: " << argv[0] << " <image_file1> <image_file2> [<image_file3>...]" << endl;
exit(EXIT_FAILURE);
}
vector<Mat> imgs;
for (int i = 1; i < argc; i++) {
Mat img = imread(argv[i]);
imgs.push_back(img);
}
}

View File

@@ -0,0 +1,139 @@
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@@ -0,0 +1,22 @@
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<Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
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@@ -0,0 +1,142 @@
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63
ch14/corners/main.cpp Normal file
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#include <iostream>
#include "opencv2/opencv.hpp"
using namespace std;
using namespace cv;
void corner_harris() {
Mat src = imread("../../resources/images/building.jpg", IMREAD_GRAYSCALE);
Mat harris;
cornerHarris(src, harris, 3, 3, 0.04);
Mat harris_norm;
normalize(harris, harris_norm, 0, 255, NORM_MINMAX, CV_8U);
Mat dst;
cvtColor(src, dst, COLOR_GRAY2BGR);
for (int j = 1; j < harris.rows - 1; j++) {
for (int i = 1; i < harris.cols - 1; i++) {
if (harris_norm.at<char>(j, i) > 120) {
if (harris.at<float>(j, i) > harris.at<float>(j - 1, i) &&
harris.at<float>(j, i) > harris.at<float>(j + 1, i) &&
harris.at<float>(j, i) > harris.at<float>(j, i - 1) &&
harris.at<float>(j, i) > harris.at<float>(j, i + 1)) {
circle(dst, Point(i, j), 5, Scalar(0, 0, 255), 2);
}
}
}
}
imshow("src", src);
imshow("harris_norm", harris_norm);
imshow("dst", dst);
waitKey(0);
destroyAllWindows();
}
void corner_fast() {
Mat src = imread("../../resources/images/building.jpg", IMREAD_GRAYSCALE);
vector<KeyPoint> keypoints;
FAST(src, keypoints, 60, true);
Mat dst;
cvtColor(src, dst, COLOR_GRAY2BGR);
for (KeyPoint kp : keypoints) {
Point pt(cvRound(kp.pt.x), cvRound(kp.pt.y));
circle(dst, pt, 5, Scalar(0, 0, 255), 2);
}
imshow("src", src);
imshow("dst", dst);
waitKey(0);
destroyAllWindows();
}
int main() {
corner_fast();
}

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29
ch14/keypoints/main.cpp Normal file
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#include <iostream>
#include "opencv2/opencv.hpp"
using namespace std;
using namespace cv;
int main() {
Mat src = imread("../../resources/images/box_in_scene.png", IMREAD_GRAYSCALE);
Ptr<Feature2D> feature = ORB::create();
vector<KeyPoint> keypoints;
feature->detect(src, keypoints);
Mat desc;
feature->compute(src, keypoints, desc);
cout << "keypoints.size(): " << keypoints.size() << endl;
cout << "desc.size(): " << desc.size() << endl;
Mat dst;
drawKeypoints(src, keypoints, dst, Scalar::all(-1), DrawMatchesFlags::DRAW_RICH_KEYPOINTS);
imshow("src", src);
imshow("dst", dst);
waitKey(0);
destroyAllWindows();
}

114
ch14/matching/main.cpp Normal file
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#include <iostream>
#include "opencv2/opencv.hpp"
using namespace std;
using namespace cv;
void keypoint_matching() {
Mat src1 = imread("../../resources/images/box.png", IMREAD_GRAYSCALE);
Mat src2 = imread("../../resources/images/box_in_scene.png", IMREAD_GRAYSCALE);
Ptr<Feature2D> feature = ORB::create();
vector<KeyPoint> keypoints1, keypoints2;
Mat desc1, desc2;
feature->detectAndCompute(src1, Mat(), keypoints1, desc1);
feature->detectAndCompute(src2, Mat(), keypoints2, desc2);
Ptr<DescriptorMatcher> matcher = BFMatcher::create(NORM_HAMMING);
vector<DMatch> matches;
matcher->match(desc1, desc2, matches);
Mat dst;
drawMatches(src1, keypoints1, src2, keypoints2, matches, dst);
imshow("dst", dst);
waitKey(0);
destroyAllWindows();
}
void good_matching() {
Mat src1 = imread("../../resources/images/box.png", IMREAD_GRAYSCALE);
Mat src2 = imread("../../resources/images/box_in_scene.png", IMREAD_GRAYSCALE);
Ptr<Feature2D> feature = ORB::create();
vector<KeyPoint> keypoints1, keypoints2;
Mat desc1, desc2;
feature->detectAndCompute(src1, Mat(), keypoints1, desc1);
feature->detectAndCompute(src2, Mat(), keypoints2, desc2);
Ptr<DescriptorMatcher> matcher = BFMatcher::create(NORM_HAMMING);
vector<DMatch> matches;
matcher->match(desc1, desc2, matches);
sort(matches.begin(), matches.end());
vector<DMatch> good_matches(matches.begin(), matches.begin() + 50);
Mat dst;
drawMatches(src1, keypoints1, src2, keypoints2, good_matches, dst, Scalar::all(-1), Scalar::all(-1), vector<char>(), DrawMatchesFlags::NOT_DRAW_SINGLE_POINTS);
imshow("dst", dst);
waitKey(0);
destroyAllWindows();
}
void find_homography() {
Mat src1 = imread("../../resources/images/box.png", IMREAD_GRAYSCALE);
Mat src2 = imread("../../resources/images/box_in_scene.png", IMREAD_GRAYSCALE);
Ptr<Feature2D> orb = ORB::create();
vector<KeyPoint> keypoints1, keypoints2;
Mat desc1, desc2;
orb->detectAndCompute(src1, Mat(), keypoints1, desc1);
orb->detectAndCompute(src2, Mat(), keypoints2, desc2);
Ptr<DescriptorMatcher> matcher = BFMatcher::create(NORM_HAMMING);
vector<DMatch> matches;
matcher->match(desc1, desc2, matches);
sort(matches.begin(), matches.end());
vector<DMatch> good_matches(matches.begin(), matches.begin() + 50);
Mat dst;
drawMatches(src1, keypoints1, src2, keypoints2, good_matches, dst, Scalar::all(-1), Scalar::all(-1), vector<char>(), DrawMatchesFlags::NOT_DRAW_SINGLE_POINTS);
vector<Point2f> pts1, pts2;
for (size_t i = 0; i < good_matches.size(); i++) {
pts1.push_back(keypoints1[good_matches[i].queryIdx].pt);
pts2.push_back(keypoints2[good_matches[i].trainIdx].pt);
}
Mat H = findHomography(pts1, pts2, RANSAC);
vector<Point2f> corners1, corners2;
corners1.emplace_back(0.f, 0.f);
corners1.emplace_back(src1.cols - 1.f, 0.f);
corners1.emplace_back(src1.cols - 1.f, src1.rows - 1.f);
corners1.emplace_back(0.f, src1.rows - 1.f);
perspectiveTransform(corners1, corners2, H);
vector<Point> corners_dst;
for (Point2f pt : corners2) {
corners_dst.emplace_back(cvRound(pt.x + src1.cols), cvRound(pt.y));
}
polylines(dst, corners_dst, true, Scalar(0, 255, 0), 2, LINE_AA);
imshow("dst", dst);
waitKey(0);
destroyAllWindows();
}
int main() {
find_homography();
}

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ch15/knndigits/main.cpp Normal file
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#include "opencv2/opencv.hpp"
#include <iostream>
using namespace cv;
using namespace cv::ml;
using namespace std;
Ptr<KNearest> train_knn();
void on_mouse(int event, int x, int y, int flags, void* userdata);
int main() {
Ptr<KNearest> knn = train_knn();
Mat img = Mat::zeros(400, 400, CV_8U);
imshow("img", img);
setMouseCallback("img", on_mouse, (void*)&img);
while (true) {
int c = waitKey(0);
if (c == 27)
break;
else if (c == ' ') {
Mat img_resize, img_float, img_flatten, res;
resize(img, img_resize, Size(20, 20), 0, 0, INTER_AREA);
img_resize.convertTo(img_float, CV_32F);
img_flatten = img_float.reshape(1, 1);
knn->findNearest(img_flatten, 3, res);
cout << cvRound(res.at<float>(0, 0)) << endl;
img.setTo(0);
imshow("img", img);
}
}
return 0;
}
Ptr<KNearest> train_knn() {
Mat digits = imread("../../resources/images/digits.png", IMREAD_GRAYSCALE);
Mat train_images, train_labels;
for (int j = 0; j < 50; j++) {
for (int i = 0; i < 100; i++) {
Mat roi, roi_float, roi_flatten;
roi = digits(Rect(i * 20, j * 20, 20, 20));
roi.convertTo(roi_float, CV_32F);
roi_flatten = roi_float.reshape(1, 1);
train_images.push_back(roi_flatten);
train_labels.push_back(j / 5);
}
}
Ptr<KNearest> knn = KNearest::create();
knn->train(train_images, ROW_SAMPLE, train_labels);
return knn;
}
Point ptPrev(-1, -1);
void on_mouse(int event, int x, int y, int flags, void* userdata) {
Mat img = *(Mat*)userdata;
if (event == EVENT_LBUTTONDOWN) {
ptPrev = Point(x, y);
}
else if (event == EVENT_LBUTTONUP) {
ptPrev = Point(-1, -1);
}
else if (event == EVENT_MOUSEMOVE && (flags & EVENT_FLAG_LBUTTON)) {
line(img, ptPrev, Point(x, y), Scalar::all(255), 40, LINE_AA, 0);
ptPrev = Point(x, y);
imshow("img", img);
}
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98
ch15/knnplane/main.cpp Normal file
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#include "opencv2/opencv.hpp"
#include <iostream>
using namespace cv;
using namespace cv::ml;
using namespace std;
Mat img;
Mat train, label;
Ptr<KNearest> knn;
int k_value = 1;
void on_k_changed(int k, void* userdata);
void addPoint(const Point& pt, int cls);
void trainAndDisplay();
int main() {
img = Mat::zeros(Size(500, 500), CV_8UC3);
knn = KNearest::create();
const int NUM = 30;
Mat rn(NUM, 2, CV_32SC1);
randn(rn, 0, 50);
for (int i = 0; i < NUM; i++) {
addPoint(Point(rn.at<int>(i, 0) + 150, rn.at<int>(i, 1) + 150), 0);
}
randn(rn, 0, 50);
for (int i = 0; i < NUM; i++) {
addPoint(Point(rn.at<int>(i, 0) + 350, rn.at<int>(i, 1) + 150), 1);
}
randn(rn, 0, 70);
for (int i = 0; i < NUM; i++) {
addPoint(Point(rn.at<int>(i, 0) + 250, rn.at<int>(i, 1) + 400), 2);
}
namedWindow("knn");
createTrackbar("k", "knn", &k_value, 10, on_k_changed);
trainAndDisplay();
waitKey();
destroyAllWindows();
return 0;
}
void on_k_changed(int k, void* userdata) {
if (k_value < 1) {
k_value = 1;
} else {
k_value = k;
}
trainAndDisplay();
}
void addPoint(const Point& pt, int cls) {
Mat new_sample = (Mat_<float>(1, 2) << pt.x, pt.y);
train.push_back(new_sample);
Mat new_label = (Mat_<int>(1, 1) << cls);
label.push_back(new_label);
}
void trainAndDisplay() {
knn->train(train, ROW_SAMPLE, label);
for (int i = 0; i < img.rows; i++) {
for (int j = 0; j < img.cols; j++) {
Mat sample = (Mat_<float>(1, 2) << j, i);
Mat res;
knn->findNearest(sample, k_value, res);
int response = cvRound(res.at<float>(0, 0));
if (response == 0)
img.at<Vec3b>(i, j) = Vec3b(128, 128, 255);
if (response == 1)
img.at<Vec3b>(i, j) = Vec3b(128, 255, 128);
if (response == 2)
img.at<Vec3b>(i, j) = Vec3b(255, 128, 128);
}
}
for (int i = 0; i < train.rows; i++) {
int x = cvRound(train.at<float>(i, 0));
int y = cvRound(train.at<float>(i, 1));
int l = label.at<int>(i, 0);
if (l == 0)
circle(img, Point(x, y), 5, Scalar(0, 0, 128), -1, LINE_AA);
if (l == 1)
circle(img, Point(x, y), 5, Scalar(0, 128, 0), -1, LINE_AA);
if (l == 2)
circle(img, Point(x, y), 5, Scalar(128, 0, 0), -1, LINE_AA);
}
imshow("knn", img);
}

91
ch15/svmdigits/main.cpp Normal file
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#include "opencv2/opencv.hpp"
#include <iostream>
using namespace cv;
using namespace cv::ml;
using namespace std;
Ptr<SVM> train_hog_svm(const HOGDescriptor& hog);
void on_mouse(int event, int x, int y, int flags, void* userdata);
int main() {
HOGDescriptor hog(Size(20, 20), Size(10, 10), Size(5, 5), Size(5, 5), 9);
Ptr<SVM> svm = train_hog_svm(hog);
Mat img = Mat::zeros(400, 400, CV_8U);
imshow("img", img);
setMouseCallback("img", on_mouse, (void*)&img);
while (true) {
int c = waitKey(0);
if (c == 27)
break;
else if (c == ' ') {
Mat img_resize;
resize(img, img_resize, Size(20, 20), 0, 0, INTER_AREA);
vector<float> desc;
hog.compute(img_resize, desc);
Mat desc_mat(desc);
int res = cvRound(svm->predict(desc_mat.t()));
cout << res << endl;
img.setTo(0);
imshow("img", img);
}
}
return 0;
}
Ptr<SVM> train_hog_svm(const HOGDescriptor& hog) {
Mat digits = imread("../../resources/images/digits.png", IMREAD_GRAYSCALE);
Mat train_hog, train_labels;
for (int j = 0; j < 50; j++) {
for (int i = 0; i < 100; i++) {
Mat roi = digits(Rect(i * 20, j * 20, 20, 20));
vector<float> desc;
hog.compute(roi, desc);
Mat desc_mat(desc);
train_hog.push_back(desc_mat.t());
train_labels.push_back(j / 5);
}
}
Ptr<SVM> svm = SVM::create();
svm->setType(SVM::Types::C_SVC);
svm->setKernel(SVM::KernelTypes::RBF);
svm->setC(2.5);
svm->setGamma(0.50625);
svm->train(train_hog, ROW_SAMPLE, train_labels);
return svm;
}
Point ptPrev(-1, -1);
void on_mouse(int event, int x, int y, int flags, void* userdata) {
Mat img = *(Mat*)userdata;
if (event == EVENT_LBUTTONDOWN) {
ptPrev = Point(x, y);
}
else if (event == EVENT_LBUTTONUP) {
ptPrev = Point(-1, -1);
}
else if (event == EVENT_MOUSEMOVE && (flags & EVENT_FLAG_LBUTTON)) {
line(img, ptPrev, Point(x, y), Scalar::all(255), 40, LINE_AA, 0);
ptPrev = Point(x, y);
imshow("img", img);
}
}

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48
ch15/svmplane/main.cpp Normal file
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#include "opencv2/opencv.hpp"
#include <iostream>
using namespace cv;
using namespace cv::ml;
using namespace std;
int main() {
Mat train = Mat_<float>({ 8, 2 }, {
150, 200, 200, 250, 100, 250, 150, 300,
350, 100, 400, 200, 400, 300, 350, 400 });
Mat label = Mat_<int>({ 8, 1 }, { 0, 0, 0, 0, 1, 1, 1, 1 });
Ptr<SVM> svm = SVM::create();
svm->setType(SVM::Types::C_SVC);
svm->setKernel(SVM::KernelTypes::RBF);
svm->trainAuto(train, ROW_SAMPLE, label);
Mat img = Mat::zeros(Size(500, 500), CV_8UC3);
for (int j = 0; j < img.rows; j++) {
for (int i = 0; i < img.cols; i++) {
Mat test = Mat_<float>({ 1, 2 }, { (float)i, (float)j });
int res = cvRound(svm->predict(test));
if (res == 0)
img.at<Vec3b>(j, i) = Vec3b(128, 128, 255);
else
img.at<Vec3b>(j, i) = Vec3b(128, 255, 128);
}
}
for (int i = 0; i < train.rows; i++) {
int x = cvRound(train.at<float>(i, 0));
int y = cvRound(train.at<float>(i, 1));
int l = label.at<int>(i, 0);
if (l == 0)
circle(img, Point(x, y), 5, Scalar(0, 0, 128), -1, LINE_AA);
else
circle(img, Point(x, y), 5, Scalar(0, 128, 0), -1, LINE_AA);
}
imshow("img", img);
waitKey();
return 0;
}

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