svm과 머신러닝

This commit is contained in:
USW
2025-05-28 12:11:05 +09:00
parent d65e1aeed5
commit 007ed02f59
13 changed files with 1018 additions and 0 deletions

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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