基于QT+Opencv的摄像头采集程序

#include "camera.h" #include "ui_camera.h" #include<QDebug> Camera::Camera(QWidget *parent) : QWidget(parent), ui(new Ui::Camera) { ui->setupUi(this); timer=new QTimer(this); vd=NULL; connect(ui->btn_Start,SIGNAL(clicked()),this,SLOT(slotStart())); connect(ui->btn_Catch,SIGNAL(clicked()),this,SLOT(slotCatch())); connect(ui->btn_Continue,SIGNAL(clicked()),this,SLOT(slotContinue())); connect(ui->btn_Save,SIGNAL(clicked()),this,SLOT(slotSave())); connect(timer,SIGNAL(timeout()),this,SLOT(slotUpdata())); ui->btn_Catch->setEnabled(false); ui->btn_Save->setEnabled(false); ui->btn_Continue->setEnabled(false); } Camera::~Camera() { vd->CloseDev(); delete ui; } void Camera::slotStart() { if (ui->btn_Start->text()=="Start") { if (ui->rbn_Out->isChecked()) dev=0; else dev=1; vd=new VideoDevice(this,dev); vd->OpenDev(); timer->start(33); ui->btn_Start->setText("Stop"); ui->btn_Catch->setEnabled(true); } else { ui->btn_Start->setText("Start"); ui->btn_Catch->setEnabled(false); ui->btn_Continue->setEnabled(false); ui->btn_Save->setEnabled(false); timer->stop(); vd->CloseDev(); ui->lbl_Image->clear(); } } void Camera::slotUpdata() { frame=vd->GetFrame(); ui->lbl_Image->setPixmap(QPixmap::fromImage(frame)); } void Camera::slotCatch() { ui->btn_Continue->setEnabled(true); ui->btn_Save->setEnabled(true); timer->stop(); } void Camera::slotContinue() { timer->start(); } void Camera::slotSave() { QString imageName=NULL; imageName=QFileDialog::getSaveFileName(this,tr("Save image"),"",tr("(*.jpg)")); if (imageName!=NULL) frame.save(imageName,"JPG",-1); }