INCLUDEPATH += F:\OpenCV4.5.0\opencv\buildmingw\install\include
CONFIG(debug, debug|release): {
LIBS += F:\OpenCV4.5.0\opencv\buildmingw\install\x64\mingw\bin\libopencv_*d.dll
} else:CONFIG(release, debug|release): {
LIBS += -LF:\OpenCV4.5.0\opencv\buildmingw\install\x64\mingw\bin\
    -llibopencv_core450 \
    -llibopencv_highgui450 \
    -llibopencv_imgcodecs450 \
    -llibopencv_imgproc450 \
    -llibopencv_features2d450 \
-llibopencv_calib3d450
}

/**********************界面初始化**************************/
void PictureEnhance::initMainWindow()
{
    QString     imgPath = "D:\\Qt\\QtOpencvEnhance\\lena.jpg"; //本地路徑（圖片直接放在項目目錄下）
    Mat         imgData = imread(imgPath.toLatin1().data());   //讀取圖片數(shù)據(jù)
 
    cvtColor(imgData,imgData, COLOR_BGR2RGB);                  //圖片格式轉(zhuǎn)換
 
    myImg               = imgData;
 
    myQImg  = QImage((const unsigned char*)(imgData.data), imgData.cols, imgData.rows, QImage::Format_RGB888);
 
    imgShow();
}
 
 
/**********************處理圖片*****************************/
void PictureEnhance::imgProc(float con, int bri)
{
    Mat     imgSrc = myImg;
    Mat     imgDst = Mat::zeros(imgSrc.size(),imgSrc.type());  //初始生成空的零像素陣列
    imgSrc.convertTo(imgDst,-1,con,bri);
    myQImg = QImage((const unsigned char*)(imgDst.data), imgDst.cols,imgDst.rows, QImage::Format_RGB888);
    imgShow();
}
 
/**********************顯示圖片******************************/
void PictureEnhance::imgShow()
{
    ui->ViewLabel->setPixmap(QPixmap::fromImage(myQImg.scaled(ui->ViewLabel->size(),Qt::KeepAspectRatio)));
    ui->ViewLabel->setScaledContents(true);
}

/***********************對比度滑動條拖動槽*********************************/
void PictureEnhance::on_contrastVerticalSlider_sliderMoved(int position)
{
    imgProc(position / 33.3,0);
}
 
 
/***********************對比度滑動條值改變槽***************************/
void PictureEnhance::on_contrastVerticalSlider_valueChanged(int value)
{
    imgProc(value / 33.3,0);
}
 
/****************************亮度滑動條拖動槽*****************************/
void PictureEnhance::on_brightnessVerticalSlider_sliderMoved(int position)
{
    imgProc(1.0,position);
}
 
/**************************亮度滑動條值改變槽************************/
void PictureEnhance::on_brightnessVerticalSlider_valueChanged(int value)
{
    imgProc(1.0,value);
}