Qt图像处理技术五:图像的翻转(横向,竖向)

Qt图像处理技术五:图像的翻转(横向,竖向)

效果图

竖直翻转(两种方法):

QImage Vertical(const QImage &origin)
{
    QImage newImage(QSize(origin.width(), origin.height()), QImage::Format_ARGB32);
    QColor tmpColor;
    int r, g, b;
    for (int x = 0; x < newImage.width(); x++) {
        for (int y = 0; y < newImage.height(); y++) {
            tmpColor = QColor(origin.pixel(x, y));
            r = tmpColor.red();
            g = tmpColor.green();
            b = tmpColor.blue();

            newImage.setPixel(x, newImage.height() - y - 1, qRgb(r, g, b));

        }
    }
    return newImage;
}

QImage QImageAPI::Vertical(const QImage &origin)
{
    QImage newImage(QSize(origin.width(), origin.height()), QImage::Format_ARGB32);
    newImage=origin.mirrored(false, true);
    return newImage;
}

水平翻转(两种方法):

QImage QImageAPI::Horizontal(const QImage &origin)
{
    QImage newImage(QSize(origin.width(), origin.height()), QImage::Format_ARGB32);
    QColor tmpColor;
    int r, g, b;
    for (int x = 0; x < newImage.width(); x++) {
        for (int y = 0; y < newImage.height(); y++) {
            tmpColor = QColor(origin.pixel(x, y));
            r = tmpColor.red();
            g = tmpColor.green();
            b = tmpColor.blue();

            newImage.setPixel(newImage.width() - x - 1, y, qRgb(r, g, b));

        }
    }
    return newImage;
}

QImage QImageAPI::Horizontal(const QImage &origin)
{
    QImage newImage(QSize(origin.width(), origin.height()), QImage::Format_ARGB32);
newImage=origin.mirrored(true, false);
    return newImage;
}