A Vertical Edge Detection Algorithm for Car License Plate Detection

IJCA Proceedings on Emerging Applications of Electronics System, Signal Processing and Computing Technologies
© 2015 by IJCA Journal
NCESC 2015 - Number 1
Year of Publication: 2015
Vijaya B. Ghule
Amol B. Jagadale

Vijaya B Ghule and Amol B Jagadale. Article: A Vertical Edge Detection Algorithm for Car License Plate Detection. IJCA Proceedings on Emerging Applications of Electronics System, Signal Processing and Computing Technologies NCESC 2015(1):26-29, September 2015. Full text available. BibTeX

	author = {Vijaya B. Ghule and and Amol B. Jagadale},
	title = {Article: A Vertical Edge Detection Algorithm for Car License Plate Detection},
	journal = {IJCA Proceedings on Emerging Applications of Electronics System, Signal Processing and Computing Technologies},
	year = {2015},
	volume = {NCESC 2015},
	number = {1},
	pages = {26-29},
	month = {September},
	note = {Full text available}


Edges characterize boundaries and are therefore a problem of fundamental importance in image processing. Edge detection is one of the most critical tasks in automatic image analysis. There exists no universal edge detection method which works well under all conditions. This paper shows the new approach based on the one of the most efficient techniques for edge detection, which has advantages of its robustness and its flexibility. Edge detection is a very important process for many image processing applications, especially in Car License Plate Detection and Recognition Systems (CLPDRS). The need to distinguish the desired details is a very important pre-process in order to give good results in short time processing. We proposed a new and fast Vertical Edge Detection Algorithm (VEDA) which is based on the contrast between the gray scale values. After binarizing the input image using adaptive thresholding (AT), an unwanted-line elimination algorithm (ULEA) is proposed to enhance the image, and then, the VEDA is applied. The results revealed accurate edge detection performance and demonstrated the great efficiency of using VEDA in order to highlight license plate details.


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