Qt 5 and OpenCV 4 Computer Vision Projects

Saving the filtered images

In the preceding subsection, we implemented a blur filter and successfully blurred an image with it—the blurred image was rendered on the OpenGL viewport. So, can we save that resulting image as a file on our local disk? Sure; let's do it as follows:

     void GLPanel::saveOutputImage(QString path)     {         QImage output(img.width(), img.height(), QImage::Format_RGB888);         glReadPixels(             0, 0, img.width(), img.height(), GL_RGB, GL_UNSIGNED_BYTE, output.bits());         output = output.mirrored(false, true);         output.save(path);     }

We add a new GLPanel::saveOutputImage method that accepts a file path as its argument to save the image. Another thing worth noting is that we change the original image, QImage img, from a local variable in the ...