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Using Namespace Using Namespace New: #Include #Include

This document contains code for two OpenCV programs: 1. A program that reads an image file, displays the image, and waits for a key press. 2. A program that uses a Haar cascade classifier to detect faces in real-time video from a webcam. It draws rectangles around any detected faces and displays the number of faces detected.

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Duy Nguyễn Văn Nhật
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76 views2 pages

Using Namespace Using Namespace New: #Include #Include

This document contains code for two OpenCV programs: 1. A program that reads an image file, displays the image, and waits for a key press. 2. A program that uses a Haar cascade classifier to detect faces in real-time video from a webcam. It draws rectangles around any detected faces and displays the number of faces detected.

Uploaded by

Duy Nguyễn Văn Nhật
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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Đọc ảnh:

#include
<opencv2\highgui\highgui.hpp>#include<iostream>using
namespace cv;using namespace std;int main() {
char *DD = new char[100]; //Luu duong dan
cout << "Nhap duong dan: "; cin >> DD;
Mat image; //Tao ma tran anh image
image = imread(DD);//Doc anh dau vao
if (!image.data) { //Kiem tra anh co doc duoc khong
cout << "Khong the tim thay anh";
system("pause");
exit(0);
}
namedWindow("PICTURE", WINDOW_NORMAL);
imshow("PICTURE", image);
waitKey(0); }
Nhận diện gương mặt:
#include <iostream>#include
<opencv2\core\core.hpp>#include
<opencv2\highgui\highgui.hpp>#include
<opencv2\imgproc\imgproc.hpp>#include
<opencv2\objdetect\objdetect.hpp>
using namespace cv;using namespace std;int main() {Mat
image;
vector<Rect> faces;
CascadeClassifier nhandien;
VideoCapture camera;
camera.open(0);

nhandien.load("C:\\openCV\\build\\etc\\haarcascades\\haar
cascade_frontalface_alt.xml");
while (1) {
camera.read(image);
nhandien.detectMultiScale(image, faces, 1.1,
2, CV_HAAR_SCALE_IMAGE, Size(30, 30));
if (faces.empty()){
cout << "Khong phat hien mat nguoi!"
<< endl;
}
for (int i = 0; i < faces.size(); ++i)
rectangle(image, faces.at(i),
CV_RGB(200, 0, 0), 2);
cout << "So mat phat hien duoc: " <<
faces.size() << endl;
imshow("PHAT HIEN GUONG MAT", image);
cvWaitKey(10);
}
waitKey(0);}

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