[SOLVED]Image color Convert, stumbling upon answer

[2lights]

[Solved]
Changed from QLabel to QGraphicsView

QGraphicsColorizeEffect *effect;
    effect = new QGraphicsColorizeEffect;
 
    effect->setColor(QColor(Qt::red));

QGraphicsColorizeEffect *effect;
    effect = new QGraphicsColorizeEffect;

    effect->setColor(QColor(Qt::red));

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Apologies for any inconvenience
Next time will do my homework better before posting

Apologies

Kind Regards


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This is a similar thread to others, but not the same!

I was initially trying to convert an image to gray scale
when my code instead of converting everything to grayscale
took a black & white image kept the black as is & converted the the white to dark blue----> fantastic

Thats actually what i needed, the thing is how do I change what colour should the white be converted to?
because technically my code does not specify blue!

image1 = image1.convertToFormat(QImage::Format_RGB32);
 
    QRgb color;
    for (int i=0; f1<image1.width(); i++) {
        for (int j=0; j<image1.height(); j++) {
            color = image1.pixel(i, j);
            image1.setPixel(i, j, QColor((qRed(color) + qGreen(color) + qBlue(color))/3).rgb());
        }
    }

image1 = image1.convertToFormat(QImage::Format_RGB32);

    QRgb color;
    for (int i=0; f1<image1.width(); i++) {
        for (int j=0; j<image1.height(); j++) {
            color = image1.pixel(i, j);
            image1.setPixel(i, j, QColor((qRed(color) + qGreen(color) + qBlue(color))/3).rgb());
        }
    }

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Whenever i put the above code i my program it converts all white to blue

Initially i wanted grayscale but im more than happy with this result
though I want to choose which color

Ideas please


Kind Regards

[wysota]

How is the code you posted related to what you have written in the description?

[mergele]

I just started with Qt, but shouldn't line 4 be:

for (int i=0; i < image1.width(); i++)

for (int i=0; i < image1.width(); i++)

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[2lights]

[Solved]
Changed from QLabel to QGraphicsView

QGraphicsColorizeEffect *effect;
    effect = new QGraphicsColorizeEffect;
 
    effect->setColor(QColor(Qt::red));

QGraphicsColorizeEffect *effect;
    effect = new QGraphicsColorizeEffect;
     
    effect->setColor(QColor(Qt::red));

To copy to clipboard, switch view to plain text mode 

Apologies for any inconvenience
Next time will do my homework better before posting

Kind Regards

[wysota]

You can apply the colorize effect to the label as well.