Vehicle License Plate Preprocessing Techniques Using Graphical Interface

This work consists in the development of a graphical user interaction interface that enables the application of image preprocessing techniques in a region that includes the license plate, so that the input and output of the process are images. Five images preprocessing techniques are contemplated in this paper, to remove noise, enhance the image and detect characters, namely: Gaussian Filter, Sharpness Filter (Unsharp Mask), Otsu Threshold Filter, Sobel Edge Detector and Canny Edge Detector. The interface was built using the GUIDE (Graphical User Interface Development Environment) of the MATLAB software.