opencv移植2

来源：互联网发布：香港人怎么看大陆知乎编辑：程序博客网时间：2024/06/18 17:16

上次移植时候，出现用Qt调用opencv库会出现段错误，没办法尝试了各种办法还是没有效果，换了一个版本的opencv就可以了，可能是版本不兼容吧。

ubantu13.04

Qt4.8.3

arm-liunx-gcc 4.3.3

opencv2.4.3(成功)

opencv2.4.8(或出现段错误)

还是上篇那个程序，将一副彩色图像转为灰度图，用QLabel显示出来

pro文件

QT       += core guiINCLUDEPATH+=   /usr/local/arm/opencvarm/include/opencv     \                     /usr/local/arm/opencvarm/include/opencv2    \                     /usr/local/arm/opencvarm/includeLIBS += -L/usr/local/arm/opencvarm/lib  -lopencv_core  -lopencv_highguigreaterThan(QT_MAJOR_VERSION, 4): QT += widgetsTARGET = opencvtestTEMPLATE = appSOURCES += main.cpp\        dialog.cppHEADERS  += dialog.h

main.cpp

#include <QApplication>#include <QLabel>#include "opencv2/core/core.hpp"#include "opencv2/highgui/highgui.hpp"#include "opencv2/imgproc/imgproc.hpp"int main(int argc, char *argv[]){    QApplication a(argc, argv);    IplImage* pImg; //声明IplImage指针      //载入图像，强制转化为Gray    if( (pImg = cvLoadImage( "/jiemian/2/startn.png", 0)) != 0 ) {    IplImage* pImg2 = cvCreateImage(cvGetSize(pImg),                    pImg->depth,                    pImg->nChannels);    cvCopy(pImg, pImg2, NULL);    cvSaveImage("/jiemian/result.png", pImg2);//把图像写入文件    cvReleaseImage( &pImg ); //释放图像    cvReleaseImage( &pImg2 ); //释放图像    QLabel *label1 = new QLabel;    QLabel *label2 = new QLabel;    label1->setGeometry(10,10,155,100);    label1->setPixmap(QPixmap("/jiemian/2/startn.png"));    label1->show();    label2->setGeometry(200,200,155,100);    label2->setPixmap(QPixmap("/jiemian/result.png"));    label2->show();}    return a.exec();}

结果：

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