I would like to know how i can select a pixel with a mouse click in an image (QImge) and get pixel position and value.
Thanks
First you have to draw the image. You can do this my making a QLabel widget and call setPixmap. You need to convert your QImage to QPixmap before doing this (you can use QPixmap.fromImage(img)).
You can get mouse clicks by subclassing the QImage and intercepting mousePressEvent. Look up the pixel value with QImage.pixel().
Pyqt get pixel position and value when mouse click on the image