Right format to use to display an image cv::Mat CV_32F normalized

Rui f

I have an image cv::Mat CV_32F normalized like this:

depthImage.convertTo(depthImageNormalized, CV_32F, 1.0 / 65535, 0);
normalize(depthImageNormalized, depthImageNormalized, 0, 1, cv::NORM_MINMAX);

And I want to display it on a label

ui->label_phone_depth->setPixmap(QPixmap::fromImage(QImage(depth.data, depth.cols, depth.rows, depth.step, QImage::Format_Grayscale16)));

On the left image you can see the original image, and on the left what is outputted

SGaist

Hi and welcome to devnet,

You can't jump from a 32bit float image to 16bit integer one like that.

Convert your OpenCV image to 16 bit before making a QImage out of it.