Qt Painter和Image保存

void playPainter() {    QSize size(200,200);    QImage picture(size,  QImage::Format_RGB32);    picture.fill(32);    QPainter painter;    painter.begin(&picture);    painter.setRenderHint(QPainter::Antialiasing);    painter.setBackgroundMode(Qt::TransparentMode);    QPen pen;    QColor color(255,0,0);    pen.setColor(color);    pen.setWidth(5);    pen.setCapStyle(Qt::RoundCap);    painter.setPen(pen);    painter.drawEllipse(10,10, 80,80);    painter.end();    QImageWriter  imagefile;    imagefile.setFileName("circle.png");    imagefile.setFormat("png");    imagefile.setQuality(100);    qDebug()<< imagefile.write(picture)<<imagefile.errorString();}

画画保存图片挺好玩的

Question:

不知道有没有算法可以把图片转成可读文本, 然后由Qt读取文本再还原图片 (不是Pixmap)