Qt結(jié)合OpenCV部署yolov5的實(shí)現(xiàn)
更新時(shí)間：2022年04月07日 15:43:20 作者：SongpingWang
本文主要介紹了Qt結(jié)合OpenCV部署yolov5的實(shí)現(xiàn)，文中通過(guò)示例代碼介紹的非常詳細(xì)，對(duì)大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價(jià)值，需要的朋友們下面隨著小編來(lái)一起學(xué)習(xí)學(xué)習(xí)吧
分別使用了openvino，opencv_cuda進(jìn)行加速。
關(guān)于演示視頻及代碼講解請(qǐng)查看：
https://www.bilibili.com/video/BV13S4y1c7ea/
https://www.bilibili.com/video/BV1Dq4y1x7r6/
https://www.bilibili.com/video/BV1kT4y1S7hz/
一、新建項(xiàng)目 UI設(shè)計(jì)
二、代碼部分 mainwindow 類(lèi)
mainwindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QFileDialog>
#include <QFile>
#include <opencv2/opencv.hpp>
#include <opencv2/dnn.hpp>
#include <QMainWindow>
#include <QTimer>
#include <QImage>
#include <QPixmap>
#include <QDateTime>
#include <QMutex>
#include <QMutexLocker>
#include <QMimeDatabase>
#include <iostream>
#include <yolov5.h>
#include <chrono>
#pragma comment(lib,"C:\\Program Files (x86)\\Intel\\openvino_2021\\opencv\\lib\\opencv_core453.lib")
#pragma comment(lib,"C:\\Program Files (x86)\\Intel\\openvino_2021\\opencv\\lib\\opencv_imgcodecs453.lib")
#pragma comment(lib,"C:\\Program Files (x86)\\Intel\\openvino_2021\\opencv\\lib\\opencv_imgproc453.lib")
#pragma comment(lib,"C:\\Program Files (x86)\\Intel\\openvino_2021\\opencv\\lib\\opencv_videoio453.lib")
#pragma comment(lib,"C:\\Program Files (x86)\\Intel\\openvino_2021\\opencv\\lib\\opencv_objdetect453.lib")
#pragma comment(lib,"C:\\Program Files (x86)\\Intel\\openvino_2021\\opencv\\lib\\opencv_dnn453.lib")
#pragma comment(lib,"C:\\Program Files (x86)\\Intel\\openvino_2021\\deployment_tools\\inference_engine\\lib\\intel64\\Release\\inference_engine.lib")
#pragma comment(lib,"C:\\Program Files (x86)\\Intel\\openvino_2021\\deployment_tools\\inference_engine\\lib\\intel64\\Release\\inference_engine_c_api.lib")
#pragma comment(lib,"C:\\Program Files (x86)\\Intel\\openvino_2021\\deployment_tools\\inference_engine\\lib\\intel64\\Release\\inference_engine_transformations.lib")
//LIBS+= -L "C:\Program Files (x86)\Intel\openvino_2021\opencv\lib\*.lib"
//LIBS+= -L "C:\Program Files (x86)\Intel\openvino_2021\deployment_tools\inference_engine\lib\intel64\Release\*.lib"
//#ifdef QT_NO_DEBUG
//#pragma comment(lib,"C:\Program Files (x86)\Intel\openvino_2021\opencv\lib\opencv_core452.lib")
//#pragma comment(lib,"E:/opencv_build/install/x64/vc16/lib/opencv_imgcodecs452.lib")
//#pragma comment(lib,"E:/opencv_build/install/x64/vc16/lib/opencv_imgproc452.lib")
//#pragma comment(lib,"E:/opencv_build/install/x64/vc16/lib/opencv_imgcodecs452.lib")
//#pragma comment(lib,"E:/opencv_build/install/x64/vc16/lib/opencv_video452.lib")
//#pragma comment(lib,"E:/opencv_build/install/x64/vc16/lib/opencv_videoio452.lib")
//#pragma comment(lib,"E:/opencv_build/install/x64/vc16/lib/opencv_objdetect452.lib")
//#pragma comment(lib,"E:/opencv_build/install/x64/vc16/lib/opencv_shape452.lib")
//#pragma comment(lib,"E:/opencv_build/install/x64/vc16/lib/opencv_dnn452.lib")
//#pragma comment(lib,"E:/opencv_build/install/x64/vc16/lib/opencv_dnn_objdetect452.lib")
//#else
//#pragma comment(lib,"E:/opencv_build/install/x64/vc16/lib/opencv_core452d.lib")
//#pragma comment(lib,"E:/opencv_build/install/x64/vc16/lib/opencv_imgcodecs452d.lib")
//#pragma comment(lib,"E:/opencv_build/install/x64/vc16/lib/opencv_imgproc452d.lib")
//#pragma comment(lib,"E:/opencv_build/install/x64/vc16/lib/opencv_imgcodecs452d.lib")
//#pragma comment(lib,"E:/opencv_build/install/x64/vc16/lib/opencv_video452d.lib")
//#pragma comment(lib,"E:/opencv_build/install/x64/vc16/lib/opencv_videoio452d.lib")
//#pragma comment(lib,"E:/opencv_build/install/x64/vc16/lib/opencv_objdetect452d.lib")
//#pragma comment(lib,"E:/opencv_build/install/x64/vc16/lib/opencv_shape452d.lib")
//#pragma comment(lib,"E:/opencv_build/install/x64/vc16/lib/opencv_dnn452d.lib")
//#pragma comment(lib,"E:/opencv_build/install/x64/vc16/lib/opencv_dnn_objdetect452d.lib")
//#endif
//#ifdef QT_NO_DEBUG
//#pragma comment(lib,"E:/opencv452_cuda/install/x64/vc16/lib/opencv_core452.lib")
//#pragma comment(lib,"E:/opencv452_cuda/install/x64/vc16/lib/opencv_imgcodecs452.lib")
//#pragma comment(lib,"E:/opencv452_cuda/install/x64/vc16/lib/opencv_imgproc452.lib")
//#pragma comment(lib,"E:/opencv452_cuda/install/x64/vc16/lib/opencv_imgcodecs452.lib")
//#pragma comment(lib,"E:/opencv452_cuda/install/x64/vc16/lib/opencv_video452.lib")
//#pragma comment(lib,"E:/opencv452_cuda/install/x64/vc16/lib/opencv_videoio452.lib")
//#pragma comment(lib,"E:/opencv452_cuda/install/x64/vc16/lib/opencv_objdetect452.lib")
//#pragma comment(lib,"E:/opencv452_cuda/install/x64/vc16/lib/opencv_shape452.lib")
//#pragma comment(lib,"E:/opencv452_cuda/install/x64/vc16/lib/opencv_dnn452.lib")
//#pragma comment(lib,"E:/opencv452_cuda/install/x64/vc16/lib/opencv_dnn_objdetect452.lib")
//#endif
QPixmap Mat2Image(cv::Mat src);
QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow(QWidget *parent = nullptr);
void Init();
~MainWindow();
private slots:
void readFrame(); //自定義信號(hào)處理函數(shù)
void on_openfile_clicked();
void on_loadfile_clicked();
void on_startdetect_clicked();
void on_stopdetect_clicked();
void on_comboBox_activated(const QString &arg1);
private:
Ui::MainWindow *ui;
QTimer *timer;
cv::VideoCapture *capture;
YOLOV5 *yolov5;
NetConfig conf;
NetConfig *yolo_nets;
std::vector<cv::Rect> bboxes;
int IsDetect_ok = 0;
};
#endif // MAINWINDOW_H
mainwindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
, ui(new Ui::MainWindow)
{
ui->setupUi(this);
setWindowTitle(QStringLiteral("YoloV5目標(biāo)檢測(cè)軟件"));
timer = new QTimer(this);
timer->setInterval(33);
connect(timer,SIGNAL(timeout()),this,SLOT(readFrame()));
ui->startdetect->setEnabled(false);
ui->stopdetect->setEnabled(false);
Init();
}
MainWindow::~MainWindow()
{
capture->release();
delete capture;
delete [] yolo_nets;
delete yolov5;
delete ui;
}
void MainWindow::Init()
{
capture = new cv::VideoCapture();
yolo_nets = new NetConfig[4]{
{0.5, 0.5, 0.5, "yolov5s"},
{0.6, 0.6, 0.6, "yolov5m"},
{0.65, 0.65, 0.65, "yolov5l"},
{0.75, 0.75, 0.75, "yolov5x"}
};
conf = yolo_nets[0];
yolov5 = new YOLOV5();
yolov5->Initialization(conf);
ui->textEditlog->append(QStringLiteral("默認(rèn)模型類(lèi)別：yolov5s args: %1 %2 %3")
.arg(conf.nmsThreshold)
.arg(conf.objThreshold)
.arg(conf.confThreshold));
}
void MainWindow::readFrame()
{
cv::Mat frame;
capture->read(frame);
if (frame.empty()) return;
auto start = std::chrono::steady_clock::now();
yolov5->detect(frame);
auto end = std::chrono::steady_clock::now();
std::chrono::duration<double, std::milli> elapsed = end - start;
ui->textEditlog->append(QString("cost_time: %1 ms").arg(elapsed.count()));
// double t0 = static_cast<double>(cv::getTickCount());
// yolov5->detect(frame);
// double t1 = static_cast<double>(cv::getTickCount());
// ui->textEditlog->append(QStringLiteral("cost_time: %1 ").arg((t1 - t0) / cv::getTickFrequency()));
cv::cvtColor(frame, frame, cv::COLOR_BGR2RGB);
QImage rawImage = QImage((uchar*)(frame.data),frame.cols,frame.rows,frame.step,QImage::Format_RGB888);
ui->label->setPixmap(QPixmap::fromImage(rawImage));
}
void MainWindow::on_openfile_clicked()
{
QString filename = QFileDialog::getOpenFileName(this,QStringLiteral("打開(kāi)文件"),".","*.mp4 *.avi;;*.png *.jpg *.jpeg *.bmp");
if(!QFile::exists(filename)){
return;
}
ui->statusbar->showMessage(filename);
QMimeDatabase db;
QMimeType mime = db.mimeTypeForFile(filename);
if (mime.name().startsWith("image/")) {
cv::Mat src = cv::imread(filename.toLatin1().data());
if(src.empty()){
ui->statusbar->showMessage("圖像不存在！");
return;
}
cv::Mat temp;
if(src.channels()==4)
cv::cvtColor(src,temp,cv::COLOR_BGRA2RGB);
else if (src.channels()==3)
cv::cvtColor(src,temp,cv::COLOR_BGR2RGB);
else
cv::cvtColor(src,temp,cv::COLOR_GRAY2RGB);
auto start = std::chrono::steady_clock::now();
yolov5->detect(temp);
auto end = std::chrono::steady_clock::now();
std::chrono::duration<double, std::milli> elapsed = end - start;
ui->textEditlog->append(QString("cost_time: %1 ms").arg(elapsed.count()));
QImage img = QImage((uchar*)(temp.data),temp.cols,temp.rows,temp.step,QImage::Format_RGB888);
ui->label->setPixmap(QPixmap::fromImage(img));
ui->label->resize(ui->label->pixmap()->size());
filename.clear();
}else if (mime.name().startsWith("video/")) {
capture->open(filename.toLatin1().data());
if (!capture->isOpened()){
ui->textEditlog->append("fail to open MP4!");
return;
}
IsDetect_ok +=1;
if (IsDetect_ok ==2)
ui->startdetect->setEnabled(true);
ui->textEditlog->append(QString::fromUtf8("Open video: %1 succesfully!").arg(filename));
//獲取整個(gè)幀數(shù)QStringLiteral
long totalFrame = capture->get(cv::CAP_PROP_FRAME_COUNT);
ui->textEditlog->append(QStringLiteral("整個(gè)視頻共 %1 幀").arg(totalFrame));
ui->label->resize(QSize(capture->get(cv::CAP_PROP_FRAME_WIDTH), capture->get(cv::CAP_PROP_FRAME_HEIGHT)));
//設(shè)置開(kāi)始幀()
long frameToStart = 0;
capture->set(cv::CAP_PROP_POS_FRAMES, frameToStart);
ui->textEditlog->append(QStringLiteral("從第 %1 幀開(kāi)始讀").arg(frameToStart));
//獲取幀率
double rate = capture->get(cv::CAP_PROP_FPS);
ui->textEditlog->append(QStringLiteral("幀率為: %1 ").arg(rate));
}
}
void MainWindow::on_loadfile_clicked()
{
QString onnxFile = QFileDialog::getOpenFileName(this,QStringLiteral("選擇模型"),".","*.onnx");
if(!QFile::exists(onnxFile)){
return;
}
ui->statusbar->showMessage(onnxFile);
if (!yolov5->loadModel(onnxFile.toLatin1().data())){
ui->textEditlog->append(QStringLiteral("加載模型失敗！"));
return;
}
IsDetect_ok +=1;
ui->textEditlog->append(QString::fromUtf8("Open onnxFile: %1 succesfully!").arg(onnxFile));
if (IsDetect_ok ==2)
ui->startdetect->setEnabled(true);
}
void MainWindow::on_startdetect_clicked()
{
timer->start();
ui->startdetect->setEnabled(false);
ui->stopdetect->setEnabled(true);
ui->openfile->setEnabled(false);
ui->loadfile->setEnabled(false);
ui->comboBox->setEnabled(false);
ui->textEditlog->append(QStringLiteral("================\n"
" 開(kāi)始檢測(cè)\n"
"================\n"));
}
void MainWindow::on_stopdetect_clicked()
{
ui->startdetect->setEnabled(true);
ui->stopdetect->setEnabled(false);
ui->openfile->setEnabled(true);
ui->loadfile->setEnabled(true);
ui->comboBox->setEnabled(true);
timer->stop();
ui->textEditlog->append(QStringLiteral("================\n"
" 停止檢測(cè)\n"
"================\n"));
}
void MainWindow::on_comboBox_activated(const QString &arg1)
{
if (arg1.contains("s")){
conf = yolo_nets[0];
}else if (arg1.contains("m")) {
conf = yolo_nets[1];
}else if (arg1.contains("l")) {
conf = yolo_nets[2];
}else if (arg1.contains("x")) {
conf = yolo_nets[3];}
yolov5->Initialization(conf);
ui->textEditlog->append(QStringLiteral("使用模型類(lèi)別：%1 args: %2 %3 %4")
.arg(arg1)
.arg(conf.nmsThreshold)
.arg(conf.objThreshold)
.arg(conf.confThreshold));
}
yolov5類(lèi)
yolov5.h
#ifndef YOLOV5_H
#define YOLOV5_H
#include <opencv2/opencv.hpp>
#include <opencv2/dnn.hpp>
#include <fstream>
#include <sstream>
#include <iostream>
#include <exception>
#include <QMessageBox>
struct NetConfig
{
float confThreshold; // class Confidence threshold
float nmsThreshold; // Non-maximum suppression threshold
float objThreshold; //Object Confidence threshold
std::string netname;
};
class YOLOV5
{
public:
YOLOV5(){}
void Initialization(NetConfig conf);
bool loadModel(const char* onnxfile);
void detect(cv::Mat& frame);
private:
const float anchors[3][6] = {{10.0, 13.0, 16.0, 30.0, 33.0, 23.0}, {30.0, 61.0, 62.0, 45.0, 59.0, 119.0},{116.0, 90.0, 156.0, 198.0, 373.0, 326.0}};
const float stride[3] = { 8.0, 16.0, 32.0 };
std::string classes[80] = {"person", "bicycle", "car", "motorbike", "aeroplane", "bus",
"train", "truck", "boat", "traffic light", "fire hydrant",
"stop sign", "parking meter", "bench", "bird", "cat", "dog",
"horse", "sheep", "cow", "elephant", "bear", "zebra", "giraffe",
"backpack", "umbrella", "handbag", "tie", "suitcase", "frisbee",
"skis", "snowboard", "sports ball", "kite", "baseball bat",
"baseball glove", "skateboard", "surfboard", "tennis racket",
"bottle", "wine glass", "cup", "fork", "knife", "spoon", "bowl",
"banana", "apple", "sandwich", "orange", "broccoli", "carrot",
"hot dog", "pizza", "donut", "cake", "chair", "sofa", "pottedplant",
"bed", "diningtable", "toilet", "tvmonitor", "laptop", "mouse",
"remote", "keyboard", "cell phone", "microwave", "oven", "toaster",
"sink", "refrigerator", "book", "clock", "vase", "scissors",
"teddy bear", "hair drier", "toothbrush"};
const int inpWidth = 640;
const int inpHeight = 640;
float confThreshold;
float nmsThreshold;
float objThreshold;
cv::Mat blob;
std::vector<cv::Mat> outs;
std::vector<int> classIds;
std::vector<float> confidences;
std::vector<cv::Rect> boxes;
cv::dnn::Net net;
void drawPred(int classId, float conf, int left, int top, int right, int bottom, cv::Mat& frame);
void sigmoid(cv::Mat* out, int length);
};
static inline float sigmoid_x(float x)
{
return static_cast<float>(1.f / (1.f + exp(-x)));
}
#endif // YOLOV5_H
yolov5.cpp
#include "yolov5.h"
using namespace std;
using namespace cv;
void YOLOV5::Initialization(NetConfig conf)
{
this->confThreshold = conf.confThreshold;
this->nmsThreshold = conf.nmsThreshold;
this->objThreshold = conf.objThreshold;
classIds.reserve(20);
confidences.reserve(20);
boxes.reserve(20);
outs.reserve(3);
}
bool YOLOV5::loadModel(const char *onnxfile)
{
try {
this->net = cv::dnn::readNetFromONNX(onnxfile);
return true;
} catch (exception& e) {
QMessageBox::critical(NULL,"Error",QStringLiteral("模型加載出錯(cuò)，請(qǐng)檢查重試！\n %1").arg(e.what()),QMessageBox::Yes,QMessageBox::Yes);
return false;
}
this->net.setPreferableBackend(cv::dnn::DNN_BACKEND_INFERENCE_ENGINE);
this->net.setPreferableTarget(cv::dnn::DNN_TARGET_CPU);
// this->net.setPreferableBackend(cv::dnn::DNN_BACKEND_CUDA);
// this->net.setPreferableTarget(cv::dnn::DNN_TARGET_CUDA);
// try {
// this->net.setPreferableBackend(cv::dnn::DNN_BACKEND_CUDA);
// this->net.setPreferableTarget(cv::dnn::DNN_TARGET_CUDA);
// } catch (exception& e2) {
// this->net.setPreferableBackend(cv::dnn::DNN_BACKEND_DEFAULT);
// this->net.setPreferableTarget(cv::dnn::DNN_TARGET_CPU);
// QMessageBox::warning(NULL,"warning",QStringLiteral("正在使用CPU推理！\n %1").arg(e2.what()),QMessageBox::Yes,QMessageBox::Yes);
// return false;
// }
}
void YOLOV5::detect(cv::Mat &frame)
{
cv::dnn::blobFromImage(frame, blob, 1 / 255.0, Size(this->inpWidth, this->inpHeight), Scalar(0, 0, 0), true, false);
this->net.setInput(blob);
this->net.forward(outs, this->net.getUnconnectedOutLayersNames());
/generate proposals
classIds.clear();
confidences.clear();
boxes.clear();
float ratioh = (float)frame.rows / this->inpHeight, ratiow = (float)frame.cols / this->inpWidth;
int n = 0, q = 0, i = 0, j = 0, nout = 8 + 5, c = 0;
for (n = 0; n < 3; n++) ///尺度
{
int num_grid_x = (int)(this->inpWidth / this->stride[n]);
int num_grid_y = (int)(this->inpHeight / this->stride[n]);
int area = num_grid_x * num_grid_y;
this->sigmoid(&outs[n], 3 * nout * area);
for (q = 0; q < 3; q++) ///anchor數(shù)
{
const float anchor_w = this->anchors[n][q * 2];
const float anchor_h = this->anchors[n][q * 2 + 1];
float* pdata = (float*)outs[n].data + q * nout * area;
for (i = 0; i < num_grid_y; i++)
{
for (j = 0; j < num_grid_x; j++)
{
float box_score = pdata[4 * area + i * num_grid_x + j];
if (box_score > this->objThreshold)
{
float max_class_socre = 0, class_socre = 0;
int max_class_id = 0;
for (c = 0; c < 80; c++) get max socre
{
class_socre = pdata[(c + 5) * area + i * num_grid_x + j];
if (class_socre > max_class_socre)
{
max_class_socre = class_socre;
max_class_id = c;
}
}
if (max_class_socre > this->confThreshold)
{
float cx = (pdata[i * num_grid_x + j] * 2.f - 0.5f + j) * this->stride[n]; ///cx
float cy = (pdata[area + i * num_grid_x + j] * 2.f - 0.5f + i) * this->stride[n]; ///cy
float w = powf(pdata[2 * area + i * num_grid_x + j] * 2.f, 2.f) * anchor_w; ///w
float h = powf(pdata[3 * area + i * num_grid_x + j] * 2.f, 2.f) * anchor_h; ///h
int left = (cx - 0.5*w)*ratiow;
int top = (cy - 0.5*h)*ratioh; ///坐標(biāo)還原到原圖上
classIds.push_back(max_class_id);
confidences.push_back(max_class_socre);
boxes.push_back(Rect(left, top, (int)(w*ratiow), (int)(h*ratioh)));
}
}
}
}
}
}
// Perform non maximum suppression to eliminate redundant overlapping boxes with
// lower confidences
vector<int> indices;
cv::dnn::NMSBoxes(boxes, confidences, this->confThreshold, this->nmsThreshold, indices);
for (size_t i = 0; i < indices.size(); ++i)
{
int idx = indices[i];
Rect box = boxes[idx];
this->drawPred(classIds[idx], confidences[idx], box.x, box.y,
box.x + box.width, box.y + box.height, frame);
}
}
void YOLOV5::drawPred(int classId, float conf, int left, int top, int right, int bottom, Mat &frame)
{
rectangle(frame, Point(left, top), Point(right, bottom), Scalar(0, 0, 255), 3);
string label = format("%.2f", conf);
label = this->classes[classId] + ":" + label;
int baseLine;
Size labelSize = getTextSize(label, FONT_HERSHEY_SIMPLEX, 0.5, 1, &baseLine);
top = max(top, labelSize.height);
putText(frame, label, Point(left, top), FONT_HERSHEY_SIMPLEX, 0.75, Scalar(0, 255, 0), 1);
}
void YOLOV5::sigmoid(Mat *out, int length)
{
float* pdata = (float*)(out->data);
int i = 0;
for (i = 0; i < length; i++)
{
pdata[i] = 1.0 / (1 + expf(-pdata[i]));
}
}
三、效果演示
到此這篇關(guān)于Qt結(jié)合OpenCV部署yolov5的實(shí)現(xiàn)的文章就介紹到這了,更多相關(guān)Qt OpenCV部署yolov5內(nèi)容請(qǐng)搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！
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