4 添加槽函数OpenImage的响应代码：void ImageView::OpenImage(){ QString lstFile = QFileDialog::getOpenFileName(this, tr("Open Image"), "", tr("JPG (*.jpg);; BMp (*.bmp)")); if (lstFile.isEmpty()) { return; } m_img.load(lstFile); // 加载文件 repaint(); // 激发绘图函数} ...
image.isNull()) { videoThread->setVideoSize(QString("%1x%2").arg(image.width()).arg(image.height())); this->setImage(image); return; } //采用已经存在的采集线程/如果处于解码正常阶段则还要发几个信号通知 if (videoThread->getIsOk()) { QMetaObject::invokeMethod(this, "receivePlayStart...
image.isNull()) { int ret = DBR_DecodeBuffer(reader, (unsigned char *)image.bits(), image.width(), image.height(), image.bytesPerLine(), IPF_ARGB_8888, ""); } } } void MainWindow::startCamera() { surface->reset(); thread = new QThread(this); worker = new Work(ui, reader...
QPixmap::scaled: Pixmap is a null pixmap 我的配置如下:一. 移植的时候注意: 1. 配置(configure)的时候加上 -qt-libjpeg 好像默认是加上的。 2. make install 后, 看看安装的目录(前缀/plugins/imageformats)有没有 libjpeg.so 二. 开发板 1. QT 源码修改: 在Qt的pro文件中增加QTPLUGIN += jpeg...
if(!image.isNull()) { if(image.valid(0,0)) { //获取 QPixmap 对象颜色 QColorcolor=image.pixel(0,0); red=color.red(); green=color.green(); blue=color.blue(); /** * arg(int a, int fieldWidth, int base, QChar fillChar): ...
Provide feedback We read every piece of feedback, and take your input very seriously. Include my email address so I can be contacted Cancel Submit feedback Saved searches Use saved searches to filter your results more quickly Cancel Create saved search Sign in Sign up {...
#include<QtGui/QImage>#include<QtCore/QByteArray>voidconvertRGBToYUV420P(constQString&imagePath,int width,int height,QByteArray&yuvData){QImageimage(imagePath);if(image.isNull()){// 加载图片失败return;}// 将图片转换为指定大小image=image.scaled(width,height,Qt::IgnoreAspectRatio,Qt::SmoothTrans...
if(!image.isNull()) { emit sigCurrentImage(image); } QTimer::singleShot(5, this, SLOT(onTimerGrabImage())); } } int SBaslerCameraControl::OpenCamera(QString cameraSN) { try { CDeviceInfo cInfo; String_t str = String_t(cameraSN.toStdString().c_str()); ...
ColorImage 并不是一个标准的Qt或QML类型。可能是指在Qt中处理图像时涉及的颜色空间或图像格式,但在Qt的官方文档中并没有直接名为ColorImage的类型。 相关优势 Qt 的优势在于其跨平台能力,一次编写,到处运行。它提供了丰富的组件和工具,便于快速开发复杂的GUI应用。 QML 的优势在于其声明式语法,使得界面设计更加直...
mouseDelta);if(!newGeometry.isNull()) {// boudary checkif(newGeometry.x() < image.width() - dx && newGeometry.y() < image.height() - dy && newGeometry.width() + newGeometry.x() > dx && newGeometry.height() + newGeometry.y() > dy) ...