Qt 5 and OpenCV 4 Computer Vision Projects

Navigating in the folder

Now that we have completed all of the actions in relation to a single image, let's go further and navigate all the images that reside in the directory in which the current image resides, that is, prevAction and nextAction.

To know what constitutes the previous or next image, we should be aware of two things as follows:

• Which is the current one
• The order in which we count them

So, first we add a new member field, QString currentImagePath, to the MainWindow class to save the path of the current image. Then, we save the image's path while showing it in showImage by adding the following line to the method:

     currentImagePath = path;

Then, we decide to count the images in alphabetical order according to their names. With ...