Mathematical Morphology Methodology for Extraction of Vehicle Number Plates

In this paper, the authors present a methodology for extraction of the vehicle number plates from the vehicle images using hybrid mathematical morphology techniques. The main idea is to use different morphological operations in such a way so that the number plate of the vehicle can be identified precisely. The methodology makes the task of extraction of the number plate independent of color, size and location of number plate. The proposed approach involves five different processes, these are, image enhancement, morphing transformation, morphological gradient, combination of resultant images and extracting the number plate from the objects that are left in the image. This algorithm can quickly and correctly detect the number plate area from the vehicle image.