FreeApe's profile - activity

...The channels is related to the second pram of imread() function

THanks.^_^ How to judge whether the image has an alpha channel?

@berak,and the value of IMERAD_ANYCOLOR can't be find ,though i konw the value is 4

I tested that your said,but the result is the same

QString fileName = QFileDialog::getOpenFileName(this,
                                                tr("Open Image"),".",
                                                tr("Image Files(*.png *.jpg *.jpeg *.bmp)"));
image = cv::imread(fileName.toUtf8().data());
if(!image.data){
    qDebug()<< "Could not open or find the image";
    return ;
}
QString status = QString::number(image.rows) + "x" + QString::number(image.cols);
ui->label_2->setText(status);
//show 
cv::namedWindow("Original Image");
cv::imshow("Original Image",image);

```

I can't understand this situration,Where is the problem?