lt66ds的专栏

首先在openCV官方网站http://opencv.org/下载源码包，本文以2.4.8为例下载好以后 sudo apt-get install build-essential若没有安装cmake 则执行 sudo apt-get install cmakeunzip opencv-2.4.8.zipcd opencv-2.4.8mkdir releasecd

void MainWindow::on_pushButton_clicked(){ Mat image; image = imread("test.bmp", CV_LOAD_IMAGE_COLOR); // Read the file if(! image.data ) // Check for invali