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An image enhancement algorithm for detecting the license plate region using the image of the car personal recorder
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 Title & Authors
An image enhancement algorithm for detecting the license plate region using the image of the car personal recorder
Yun, Jong-Ho; Choi, Myung-Ryul; Lee, Sang-Sun;
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 Abstract
We propose an adaptive histogram stretching algorithm for application to a car`s personal recorder. The algorithm was used for pre-processing to detect the license plate region in an image from a personal recorder. The algorithm employs a Probability Density Function (PDF) and Cumulative Distribution Function (CDF) to analyze the distribution diagram of the images. These two functions are calculated using an image obtained by sampling at a certain pixel interval. The images were subjected to different levels of stretching, and experiments were done on the images to extract their characteristics. The results show that the proposed algorithm provides less deterioration than conventional algorithms. Moreover, contrast is enhanced according to the characteristics of the image. The algorithm could provide better performance than existing algorithms in applications for detecting search regions for license plates.
 Keywords
Cumulative Distribution Function;Histogram Equalization;Image Enhancement;Car Personal Recorder;car license plate;
 Language
Korean
 Cited by
 References
1.
Rafael C. Gonzalez, Digital Image Processing, Prentice-Hall, pp.88-102, 2002.

2.
Y. T. Kim, "Contrast Enhancement Using Brightness Preserving Bi-Histogram Equalization", IEEE Trans. On Consumer Electronics, vol.43, no. 1, pp.1-8, Feb. 1997. crossref(new window)

3.
Randy Crane, Simplified Approach to Image Processing, Prentice-Hall, pp. 55-83, 1994.

4.
Bernd jahne, Digital Video Processing, Springer-Verlag, pp. 77-94, 1993.

5.
Y. Koo, et al., "An Image Resolution Enhancing Technique Using Adaptive Sub-Pixel Interpolation for Digital Still Camera system", IEEE Transaction on Consumer Electronics, vol. 45, no. 1, pp. 118-122, 1999. crossref(new window)

6.
Haoliang Li, Tao Qin. "A License Plate Location Algorithm based on Multicomponent Edge Combination of the HSI color space" IEEE International Congress on Image and Signal Processing, vol. 2, pp.1127-1129, 2011.

7.
Md.Mostafa Kamal Sarker, Sook Yoon, Jaehwan Lee, Dong Sun Park. "Novel License Plate Detection Method Based on Heuristic Energy Map", J-KICS, vol 38C No.12, pp. 1114-1125, 2013.