Simulation conditions: The simulation conditions considered during the simulation of the presented schemeare as follows.
i). Input image must have a recognized format i.e.(.jpg, .tif, .png, .gif etc).
ii). Input image must not be captured totally in front of camera i.e. not at a great angle to the camera.
iii). The number plate must not be captured in rotated direction.
In this paper work a scheme is presented for the automatic number plate recognition. All the simulation has been performed on MATLAB R2013a using generalized MATLAB toolbox and image processing toolbox. The elements such as noise or environmental changes play an intruding role in license plate verification. These factors can make the extracted region of the image incomplete. The recovery stage is applied to reconstruct the license plate image before the recognition step is taken. A typical algorithm used for the recovery process is vertical intensity projection, by which the average width and height of alphanumeric characters in the segment are measured, and according to this information, the whole plate is recovered. A data set of 7 number plate images has been taken for evaluation of performance of proposed algorithm as shown in table1. Although, there are many steps from inputting of image to number extraction. These steps are shown by figures below. Fig.4. shows the original input test image. Fig.5. is the snapshot of number plate after morphological operations, binarization and thresholding. Fig.6. is the snapshot of number plate with boundary on selected region for segmentation. Fig.7. shows segmented alphanumeric and characters present on the number plate. After this process,
segmented numbers and characters will be tested for recognition purpose. Table1 is showing number plates with their respective segmented characters and numbers. Also, final message box containing a string comprised of an alphanumeric number. Fig.4. Capturing of input image.