c/c++语言开发共享Qt5.14 与 OpenCV4.5 教程之图片增强效果

  includepath += f:opencv4.5.0opencvbuildmingwinstallinclude  config(debug, debug|release): {  libs += f:opencv4.5.0opencvbuildmingwinstallx64mingwbinlibopencv_*d.dll  } else:config(release, debug|release): {  libs += -lf:opencv4.5.0opencvbuildmingwinstallx64mingwbin      -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"; //本地路径（图片直接放在项目目录下）      mat         imgdata = imread(imgpath.tolatin1().data());   //读取图片数据         cvtcolor(imgdata,imgdata, color_bgr2rgb);                  //图片格式转换         myimg               = imgdata;         myqimg  = qimage((const unsigned char*)(imgdata.data), imgdata.cols, imgdata.rows, qimage::format_rgb888);         imgshow();  }        /**********************处理图片*****************************/  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阵列      imgsrc.convertto(imgdst,-1,con,bri);      myqimg = qimage((const unsigned char*)(imgdst.data), imgdst.cols,imgdst.rows, qimage::format_rgb888);      imgshow();  }     /**********************显示图片******************************/  void pictureenhance::imgshow()  {      ui->viewlabel->setpixmap(qpixmap::fromimage(myqimg.scaled(ui->viewlabel->size(),qt::keepaspectratio)));      ui->viewlabel->setscaledcontents(true);  }

  /***********************对比度滑动条拖动槽*********************************/  void pictureenhance::on_contrastverticalslider_slidermoved(int position)  {      imgproc(position / 33.3,0);  }        /***********************对比度滑动条值改变槽***************************/  void pictureenhance::on_contrastverticalslider_valuechanged(int value)  {      imgproc(value / 33.3,0);  }     /****************************亮度滑动条拖动槽*****************************/  void pictureenhance::on_brightnessverticalslider_slidermoved(int position)  {      imgproc(1.0,position);  }     /**************************亮度滑动条值改变槽************************/  void pictureenhance::on_brightnessverticalslider_valuechanged(int value)  {      imgproc(1.0,value);  }