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Automatic Number Plate Recognition System

M. Rajni Marban, R. Prathiba, R. Sharmila

Abstract


Automatic Number Plate Recognition (ANPR) is an image-processing technology and an important field of research that identifies vehicles by their number plates in which   the   number   plate   information   is   extracted   from vehicle's image or from sequence of images without direct human intervention. ANPR consists of 4 phases: - Preprocessing, number plate extraction, character segmentation, character recognition. This paper presents an efficient approach for number plate extraction from preprocessed vehicle input image using morphological operations, thresholding, sobel vertical edge detection and connected component analysis. The input image is firstly preprocessed using iterative bilateral filter and adaptive histogram equalization.

Keywords


Automatic Number Plate Recognition, Iterative Bilateral Filter, Adaptive Histogram Equalization, Number Plate Extraction, Morphological Operations, Thresholding, Sobel Edge Detection, Connected Component Analysis.

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References


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