Car Number Plate Detection With Edge Image Improvement

In an automatic car number plate reading system, edge density can be used to successfully detect a number plate location for character recognition process due to the characteristics of the number plate. However the initial false detection rate will be increased along with the noise presented in a car image. A method is developed to improve the edge image by suppressing unwanted detail of a car image. It increases the Edge Density Discrimination in a car number plate location and reduces the initial false detection rate to optimize the detection performance.