Qt+opencv+vs2017实现灰度

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原创最新推荐文章于 2026-04-12 16:29:26 发布 685 阅读 AI 写同款· GEO 优化 ›

Win11下VS2017与Qt5.12开发环境搭建：OpenCV4.5.5配置全攻略本文详细介绍了在Windows 11系统下，搭建Visual Studio 2017与Qt 5.12开发环境，并完成OpenCV 4.5.5配置的全过程。文章重点解决了源码编译OpenCV时的依赖下载、CMake配置等常见难题，并指导如何将OpenCV与Qt项目集成，实现计算机视觉与GUI界面的联合开发，为开发者提供了一套稳定、高效的经典环境配置方案。阅读详情

生成灰度图打开图片

`//--------------------------------------------------------------------
QString Qfilename = QFileDialog::getOpenFileName(this, tr(“选择图像”), “”, tr(“Images (*.png *.bmp *.jpg)”));
if (Qfilename.isEmpty() && isFirst_open)
{
QMessageBox::information(this, tr(“打开图像失败”), tr(“没有选择图片”));
return;
}
else if (Qfilename.isEmpty() && !isFirst_open)
{
}
else
{
filename = Qfilename.toStdString();
srcImg = imread(filename);
cvtColor(srcImg, grayImg, COLOR_BGR2GRAY);
isFirst_open = 0;
}

Mat temp;
QImage Qtemp;
cvtColor(srcImg, temp, COLOR_BGR2RGB);//BGR convert to RGB
Qtemp = QImage((const unsigned char*)(temp.data), temp.cols, temp.rows, temp.step, QImage::Format_RGB888);
ui.label->setPixmap(QPixmap::fromImage(Qtemp));
ui.label->resize(Qtemp.size());
ui.label->show();`![打开图片](https://img-blog.csdnimg.cn/20190818212337600.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1FMQkZB,size_16,color_FFFFFF,t_70)

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