Capture of emotions

We are working on a project where emotion is recognized, it is that the user at the time of entering the camera will be activated and must perform the same emotion as in the image, when performing the emotion an image must be captured automatically and it will be saved in a folder, then another scene will be created where it will be for a gallery, all the captured images will be shown in that one, I already have an advanced code, it would only be to add that part.