Computer Vision with OpenCV 3 and Qt5

The QImageReader and QImageWriter classes

The QImageReader and QImageWriter classes can be used to have more control over the image read and write process. They support the same file types as QImage and QPixmap, but offer a lot more flexibility, provide error messages when something is wrong with the image reading or writing process, and you can also set and get a lot more image properties if you use the QImageReader and QImageWriter classes. As you'll see later in the upcoming chapters, we'll use these same classes in our comprehensive computer vision application to have better control over the reading and writing of images. For now, we'll suffice with this short introduction and move on to the next section.