專案實戰：Qt+OpenCV大家來找茬（Qt抓圖，穿透應用，識別區別，框選區別，微調位置）
前言
Demo演示效果
執行包下載地址（供測試學習）
執行包+原始碼包下載地址（供測試學習）
功能列表
Qt技術點
OpenCV技術點
專案模組化部署
Qt程式碼：DrawWdget
Ui介面
DrawWidegt.h
#ifndef DRAWWIDGET_H#define DRAWWIDGET_H#include <QWidget>namespace Ui {class DrawWidget;}class DrawWidget : public QWidget{
Q_OBJECTpublic:
explicit DrawWidget(QWidget *parent = 0);
~DrawWidget();public:
void setRect(int x, int y, int width, int height);
void setRect2(int x, int y, int width, int height);
void clearListRect();
void setListRect(QList<QRect> listRect);protected:
void initControl();protected:
void paintEvent(QPaintEvent *event);protected:
void drawSelectRect(QPainter *painter);
void drawListRect(QPainter *painter);private:
Ui::DrawWidget *ui;private:
QColor _colorRect;
QRect _rect;
QRect _rect2;
QList<QRect> _listRect;};#endif // DRAWWIDGET_HDrawWidget.cpp
#include "DrawWidget.h"#include "ui_DrawWidget.h"#include <QPainter>#include <windows.h>#include <QDebug>#include <QDateTime>//#define LOG qDebug()<<__FILE__<<__LINE__//#define LOG qDebug()<<__FILE__<<__LINE__<<__FUNCTION__//#define LOG qDebug()<<__FILE__<<__LINE__<<QThread()::currentThread()//#define LOG qDebug()<<__FILE__<<__LINE__<<QDateTime::currentDateTime().toString("yyyy-MM-dd")#define LOG qDebug()<<__FILE__<<__LINE__<<QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss:zzz")DrawWidget::DrawWidget(QWidget *parent) :
QWidget(parent),
ui(new Ui::DrawWidget),
_colorRect(Qt::red){
ui->setupUi(this);
setWindowFlag(Qt::FramelessWindowHint);
setAttribute(Qt::WA_TranslucentBackground);
setAttribute(Qt::WA_TransparentForMouseEvents);
initControl();}DrawWidget::~DrawWidget(){
delete ui;}void DrawWidget::setRect(int x, int y, int width, int height){
_rect.setRect(x, y, width, height);}void DrawWidget::setRect2(int x, int y, int width, int height){
_rect2.setRect(x, y, width, height);
LOG << _rect << _rect2;}void DrawWidget::clearListRect(){
_listRect.clear();
update();}void DrawWidget::setListRect(QList<QRect> listRect){
_listRect = listRect;
update();}void DrawWidget::initControl(){
// 置頂
::SetWindowPos(HWND(this->winId()), HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW);}void DrawWidget::paintEvent(QPaintEvent *event){
QPainter painter(this);
drawSelectRect(&painter);
drawListRect(&painter);}void DrawWidget::drawSelectRect(QPainter *painter){
painter->save();
painter->setPen(QPen(_colorRect, 4));
painter->drawRect(_rect);
painter->drawRect(_rect2);
painter->restore();}void DrawWidget::drawListRect(QPainter *painter){
painter->save();
painter->setPen(QPen(Qt::white, 2));
for(int index = 0; index < _listRect.size(); index++)
{
painter->drawRect(_rect.x() + _listRect.at(index).x(),
_rect.y() + _listRect.at(index).y(),
_listRect.at(index).width(),
_listRect.at(index).height());
}
painter->setPen(QPen(Qt::blue, 2));
for(int index = 0; index < _listRect.size(); index++)
{
painter->drawRect(_rect2.x() + _listRect.at(index).x(),
_rect2.y() + _listRect.at(index).y(),
_listRect.at(index).width(),
_listRect.at(index).height());
}
painter->restore();}Qt程式碼：FindDifferenceWidget
Ui介面
FindDifferenceWidget.h
#ifndef FINDDIFFERENCEWIDGET_H#define FINDDIFFERENCEWIDGET_H#include <QWidget>#include <QPainter>#include <QRect>#include <QRegion>#include <QList>#include "FindDifferenceManager.h"#include "DrawWidget.h"#include <QElapsedTimer>namespace Ui {class FindDifferenceWidget;}class FindDifferenceWidget : public QWidget{
Q_OBJECTpublic:
explicit FindDifferenceWidget(QWidget *parent = 0);
~FindDifferenceWidget();protected:
void initControl();
void updateGameRect();protected slots:
void slot_initControl();protected:
void paintEvent(QPaintEvent *event);
void resizeEvent(QResizeEvent *event);
void moveEvent(QMoveEvent *event);
void closeEvent(QCloseEvent *event);protected slots:
void slot_valueChanged(int value);protected slots:
void slot_findResult(bool result, QList<QRect> listRect = QList<QRect>());private slots:
void on_pushButton_do_clicked();
void on_pushButton_up_clicked();
void on_pushButton_left_clicked();
void on_pushButton_right_clicked();
void on_pushButton_down_clicked();
void on_pushButton_clear_clicked();private:
Ui::FindDifferenceWidget *ui;private:
FindDifferenceManager *_pFindDifferenceManager;
QRect _rectGame;
QRect _rectApplication;
int _captionHeigh;
int _margin;
DrawWidget *_pDrawWidget;};#endif // FINDDIFFERENCEWIDGET_HFindDifferenceWidget.cpp
#include "FindDifferenceWidget.h"#include "ui_FindDifferenceWidget.h"#include <windows.h>#include <QApplication>#include <QDesktopWidget>#include <QScreen>#include <QTimer>#include <QDebug>#include <QDateTime>//#define LOG qDebug()<<__FILE__<<__LINE__//#define LOG qDebug()<<__FILE__<<__LINE__<<__FUNCTION__//#define LOG qDebug()<<__FILE__<<__LINE__<<QThread()::currentThread()//#define LOG qDebug()<<__FILE__<<__LINE__<<QDateTime::currentDateTime().toString("yyyy-MM-dd")#define LOG qDebug()<<__FILE__<<__LINE__<<QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss:zzz")FindDifferenceWidget::FindDifferenceWidget(QWidget *parent) :
QWidget(parent),
ui(new Ui::FindDifferenceWidget),
_pFindDifferenceManager(0),
_pDrawWidget(0){
ui->setupUi(this);
QString version = "v1.0.0";
setWindowTitle(QString("大家來找茬(僅供學習Qt+OpenCV實戰專案) Demo %1(作者:長沙紅胖子 QQ:21497936 WX:15173255813 blog:hpzwl.blog.csdn.net").arg(version));
resize(1230, 785);
initControl();
QTimer::singleShot(0, this, SLOT(slot_initControl()));}FindDifferenceWidget::~FindDifferenceWidget(){
delete ui;}void FindDifferenceWidget::initControl(){
// 置頂
::SetWindowPos(HWND(this->winId()), HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW);
// 識別類
_pFindDifferenceManager = new FindDifferenceManager();
connect(_pFindDifferenceManager, SIGNAL(signal_findResult(bool,QList<QRect>)),
this, SLOT(slot_findResult(bool,QList<QRect>)));
// 初始化
_captionHeigh = 26;
_margin = 3;
updateGameRect();
_pDrawWidget = new DrawWidget();
_pDrawWidget->show();
connect(ui->spinBox_image1X, SIGNAL(valueChanged(int)),
this, SLOT(slot_valueChanged(int)));
connect(ui->spinBox_image1Y, SIGNAL(valueChanged(int)),
this, SLOT(slot_valueChanged(int)));
connect(ui->spinBox_image1Width, SIGNAL(valueChanged(int)),
this, SLOT(slot_valueChanged(int)));
connect(ui->spinBox_image1Height, SIGNAL(valueChanged(int)),
this, SLOT(slot_valueChanged(int)));
connect(ui->spinBox_image2X, SIGNAL(valueChanged(int)),
this, SLOT(slot_valueChanged(int)));
connect(ui->spinBox_image2Y, SIGNAL(valueChanged(int)),
this, SLOT(slot_valueChanged(int)));
connect(ui->spinBox_image2Width, SIGNAL(valueChanged(int)),
this, SLOT(slot_valueChanged(int)));
connect(ui->spinBox_image2Height, SIGNAL(valueChanged(int)),
this, SLOT(slot_valueChanged(int)));
_pDrawWidget->setRect(ui->spinBox_image1X->value(),
ui->spinBox_image1Y->value(),
ui->spinBox_image1Width->value(),
ui->spinBox_image1Height->value());
_pDrawWidget->setRect2(ui->spinBox_image2X->value(),
ui->spinBox_image2Y->value(),
ui->spinBox_image2Width->value(),
ui->spinBox_image2Height->value());}void FindDifferenceWidget::updateGameRect(){
_rectApplication = QRect(-_margin,
-_captionHeigh,
rect().width() + _margin*2,
rect().height() + _captionHeigh + _margin);
_rectGame = QRect(_margin, rect().height() - _margin - 780, 1032, 780);}void FindDifferenceWidget::slot_initControl(){
_pDrawWidget->setGeometry(ui->frame_mask->mapToGlobal(QPoint(0, 0)).x(),
ui->frame_mask->mapToGlobal(QPoint(0, 0)).y(),
ui->frame_mask->width(),
ui->frame_mask->height());}void FindDifferenceWidget::paintEvent(QPaintEvent *event){#if 1
QRegion r1(_rectApplication);
QRegion r2(_rectGame);
QRegion r3 = r1 - r2;
setMask(r3);#endif
QWidget::paintEvent(event);}void FindDifferenceWidget::resizeEvent(QResizeEvent *event){
// 初始化
updateGameRect();
if(_pDrawWidget)
{
_pDrawWidget->setGeometry(ui->frame_mask->mapToGlobal(QPoint(0, 0)).x(),
ui->frame_mask->mapToGlobal(QPoint(0, 0)).y(),
ui->frame_mask->width(),
ui->frame_mask->height());
}}void FindDifferenceWidget::moveEvent(QMoveEvent *event){
if(_pDrawWidget)
{
_pDrawWidget->setGeometry(ui->frame_mask->mapToGlobal(QPoint(0, 0)).x(),
ui->frame_mask->mapToGlobal(QPoint(0, 0)).y(),
ui->frame_mask->width(),
ui->frame_mask->height());
}
LOG << geometry();}void FindDifferenceWidget::closeEvent(QCloseEvent *event){
_pDrawWidget->hide();
_pDrawWidget->deleteLater();}void FindDifferenceWidget::slot_valueChanged(int value){
_pDrawWidget->setRect(ui->spinBox_image1X->value(),
ui->spinBox_image1Y->value(),
ui->spinBox_image1Width->value(),
ui->spinBox_image1Height->value());
_pDrawWidget->setRect2(ui->spinBox_image2X->value(),
ui->spinBox_image2Y->value(),
ui->spinBox_image2Width->value(),
ui->spinBox_image2Height->value());
_pDrawWidget->update();
QSpinBox *pSpinBox = dynamic_cast<QSpinBox *>(sender());
if(pSpinBox == ui->spinBox_image1Width)
{
ui->spinBox_image2Width->setValue(value);
}else if(pSpinBox == ui->spinBox_image2Width)
{
ui->spinBox_image1Width->setValue(value);
}else if(pSpinBox == ui->spinBox_image1Height)
{
ui->spinBox_image2Height->setValue(value);
}else if(pSpinBox == ui->spinBox_image2Height)
{
ui->spinBox_image1Height->setValue(value);
}}void FindDifferenceWidget::slot_findResult(bool result, QList<QRect> listRect){
if(result)
{
LOG << listRect;
_pDrawWidget->setListRect(listRect);
}}void FindDifferenceWidget::on_pushButton_do_clicked(){
_pDrawWidget->clearListRect();
QElapsedTimer elapsedTimer;
elapsedTimer.start();
while(elapsedTimer.elapsed() < 500)
{
qApp->processEvents();
}
QScreen * pScreen = QApplication::primaryScreen();
QImage gameImage = pScreen->grabWindow(QApplication::desktop()->winId(),
ui->frame_mask->mapToGlobal(QPoint(0, 0)).x(),
ui->frame_mask->mapToGlobal(QPoint(0, 0)).y(),
ui->frame_mask->width(),
ui->frame_mask->height()).toImage();
QImage image1 = gameImage.copy(ui->spinBox_image1X->value(),
ui->spinBox_image1Y->value(),
ui->spinBox_image1Width->value(),
ui->spinBox_image1Height->value());
QImage image2 = gameImage.copy(ui->spinBox_image2X->value(),
ui->spinBox_image2Y->value(),
ui->spinBox_image2Width->value(),
ui->spinBox_image2Height->value());
_pFindDifferenceManager->slot_findDiffrence(image1, image2);}void FindDifferenceWidget::on_pushButton_up_clicked(){
setGeometry(geometry().x(), geometry().y() - 1, geometry().width(), geometry().height());}void FindDifferenceWidget::on_pushButton_left_clicked(){
setGeometry(geometry().x() - 1, geometry().y(), geometry().width(), geometry().height());}void FindDifferenceWidget::on_pushButton_right_clicked(){
setGeometry(geometry().x() + 1, geometry().y(), geometry().width(), geometry().height());}void FindDifferenceWidget::on_pushButton_down_clicked(){
setGeometry(geometry().x(), geometry().y() + 1, geometry().width(), geometry().height());}void FindDifferenceWidget::on_pushButton_clear_clicked(){
_pDrawWidget->setListRect(QList<QRect>());}OpenCV程式碼：FindDifferenceManager
FindDifferenceManager.h
#ifndef FINDDIFFERENCEMANAGER_H#define FINDDIFFERENCEMANAGER_H#include <QObject>#include <QImage>// opencv#include "opencv/highgui.h"#include "opencv/cxcore.h"#include "opencv2/core/core.hpp"#include "opencv2/highgui/highgui.hpp"#include "opencv2/opencv.hpp"#include "opencv2/xphoto.hpp"#include "opencv2/dnn/dnn.hpp"// opencv_contrib#include <opencv2/xphoto.hpp>#include <opencv2/ximgproc.hpp>#include <opencv2/calib3d.hpp>#include <opencv2/features2d.hpp>#include <opencv2/xfeatures2d.hpp>#include <opencv2/xfeatures2d/nonfree.hpp>class FindDifferenceManager : public QObject{
Q_OBJECTpublic:
explicit FindDifferenceManager(QObject *parent = 0);private:
bool getRunning() const;signals:
void signal_findResult(bool result, QList<QRect> listRect = QList<QRect>());public slots:
void slot_start();
void slot_stop();public slots:
void slot_findDiffrence(QImage image, QImage image2, int thresh = 20, QRect minRect = QRect(0, 0, 4, 4));protected:
cv::Mat image2Mat(QImage image);private:
bool _running;};#endif // FINDDIFFERENCEMANAGER_HFindDifferenceManager.cpp
# include "FindDifferenceManager.h" # include <QTimer> # include <QDebug> # include <QDateTime> //#define LOG qDebug()<<__FILE__<<__LINE__ //#define LOG qDebug()<<__FILE__<<__LINE__<<__FUNCTION__ //#define LOG qDebug()<<__FILE__<<__LINE__<<QThread()::currentThread() //#define LOG qDebug()<<__FILE__<<__LINE__<<QDateTime::currentDateTime().toString("yyyy-MM-dd") # define LOG qDebug ( ) << __FILE__ << __LINE__ << QDateTime :: currentDateTime ( ) . toString ( "yyyy-MM-dd hh:mm:ss:zzz" ) FindDifferenceManager :: FindDifferenceManager (QObject *parent ) : QObject (parent ) , _running ( false ) { qRegisterMetaType <QList <QRect >> ( "QList<QRect> " ) ; } bool FindDifferenceManager :: getRunning ( ) const { return _running ; } void FindDifferenceManager :: slot_start ( ) { if (_running ) { LOG << "Failed to" << __FUNCTION__ << ", it's already running." ; return ; } _running = true ; } void FindDifferenceManager :: slot_stop ( ) { if ( !_running ) { LOG << "Failed to" << __FUNCTION__ << ", it's not running." ; return ; } _running = false ; } void FindDifferenceManager :: slot_findDiffrence (QImage image , QImage image2 , int thresh , QRect minRect ) { QList <QRect > listRect ; // 將QImage轉換為cv::Mat cv ::Mat srcMat = image2Mat (image ) ; cv ::Mat srcMat2 = image2Mat (image2 ) ; if ( (srcMat .rows != srcMat2 .rows ) || (srcMat .cols != srcMat2 .cols ) ) { emit signal_findResult ( false ) ; } cv ::Mat srcMatGray ; cv ::Mat srcMat2Gray ; // 轉灰度圖 cv :: cvtColor (srcMat , srcMatGray , cv ::COLOR_BGR2GRAY ) ; cv :: cvtColor (srcMat2 , srcMat2Gray , cv ::COLOR_BGR2GRAY ) ; // cv::imshow("1", srcMatGray); // cv::imshow("2", srcMat2Gray); cv ::Mat diffMatGray ; // 圖1減去圖2：檢視差異（灰度，可能差距不大，0-255， 0 1 2 3差距小看不出） cv :: subtract (srcMatGray , srcMat2Gray , diffMatGray , cv :: Mat ( ) , CV_16SC1 ) ; // 絕對值（有負數，變正數） // cv::imshow("3", diffMatGray); cv ::Mat diffAbsMatGray = cv :: abs (diffMatGray ) ; // 改變位深（歸一化試過，但是可能存在0和255，導致漏掉一些） diffAbsMatGray . convertTo (diffAbsMatGray , CV_8UC1 , 1 , 0 ) ; // cv::imshow("4", diffAbsMatGray); # if 0 // 整個畫素降低5個點的誤差（色差） for ( int row = 0 ; row < diffAbsMatGray .rows ; row ++ ) { for ( int col = 0 ; col < diffAbsMatGray .cols ; col ++ ) { if (diffAbsMatGray . at <uchar > (row , col ) < 3 ) { diffAbsMatGray . at <uchar > (row , col ) = 0 ; } else { diffAbsMatGray . at <uchar > (row , col ) = diffAbsMatGray . at <uchar > (row , col ) - 5 ; } } } # endif cv ::Mat threshMat ; //閾值處理 cv :: threshold (diffAbsMatGray , threshMat , thresh , 255 , cv ::THRESH_BINARY ) ; // cv::imshow("5", threshMat); cv ::Mat mdianMat ; # if 0 //中值濾波 cv :: medianBlur (threshMat , mdianMat , 3 ) ; cv :: imshow ( "6" , mdianMat ) ; # else mdianMat = threshMat . clone ( ) ; # endif cv ::Mat closeMat ; # if 0 // 閉運算: 用擬合小裂縫，消除小型黑洞，並且在平滑較大物體的邊界的同時不明顯改變其面積。 cv ::Mat kernel = cv :: getStructuringElement (cv ::MORPH_RECT , cv :: Size ( 3 , 3 ) , cv :: Point ( - 1 , - 1 ) ) ; cv :: morphologyEx (mdianMat , closeMat , cv ::MORPH_CLOSE , kernel , cv :: Point ( - 1 , - 1 ) , 2 , cv ::BORDER_REPLICATE ) ; # else closeMat = mdianMat . clone ( ) ; # endif // cv::imshow("7", closeMat); // 尋找邊界 std ::vector <std ::vector <cv ::Point >> contours ; std ::vector <cv ::Vec4i > hierarchy ; cv :: findContours (closeMat , contours , hierarchy , CV_RETR_EXTERNAL , CV_CHAIN_APPROX_SIMPLE , cv :: Point ( 0 , 0 ) ) ; std ::vector <std ::vector <cv ::Point >> contoursPoly (contours . size ( ) ) ; for ( int index = 0 ; index < contours . size ( ) ; index ++ ) { cv :: approxPolyDP (cv :: Mat (contours [index ] ) , contoursPoly [index ] , 5 , true ) ; cv ::Rect rect = cv :: boundingRect (cv :: Mat (contoursPoly [index ] ) ) ; # if 0 // 小於最小矩形則忽略 if (rect .width < minRect . width ( ) || rect .height < minRect . height ( ) ) { continue ; } # endif listRect . append ( QRect (rect .x , rect .y , rect .width , rect .height ) ) ; // cv::rectangle(srcMat, rect, cv::Scalar(0, 255, 0), 2); // cv::rectangle(srcMat2, rect, cv::Scalar(0, 255, 0), 2); } // cv::imshow("8", srcMat2); // cv::waitKey(0); emit signal_findResult ( true , listRect ) ; }cv ::Mat FindDifferenceManager :: image2Mat (QImage image ) { cv ::Mat mat ; switch (image . format ( ) ) { case QImage ::Format_ARGB32 : case QImage ::Format_RGB32 : case QImage ::Format_ARGB32_Premultiplied : mat = cv :: Mat (image . height ( ) , image . width ( ) , CV_8UC4 , ( void * )image . constBits ( ) , image . bytesPerLine ( ) ) ; cv :: cvtColor (mat , mat , CV_BGRA2BGR ) ; break ; case QImage ::Format_RGB888 : mat = cv :: Mat (image . height ( ) , image . width ( ) , CV_8UC3 , ( void * )image . constBits ( ) , image . bytesPerLine ( ) ) ; cv :: cvtColor (mat , mat , CV_BGR2RGB ) ; break ; case QImage ::Format_Indexed8 : case QImage ::Format_Grayscale8 : mat = cv :: Mat (image . height ( ) , image . width ( ) , CV_8UC1 , ( void * )image . constBits ( ) , image . bytesPerLine ( ) ) ; break ; default : qDebug ( ) << __FILE__ << __LINE__ << "error to image2Mat !!! imge.format =" << image . format ( ) ; } return mat ; }
來自 “ ITPUB部落格 ” ，連結：http://blog.itpub.net/70010283/viewspace-2894375/，如需轉載，請註明出處，否則將追究法律責任。
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