Improved image enhancement method for license plate detection

被引：4

作者：

Abolghasemi, Vahid ^{[1
]}

Ahmadyfard, Alireza ^{[1
]}

机构：

[1] Shahrood Univ Technol, Shahrood, Iran

来源：

PROCEEDINGS OF THE 2007 15TH INTERNATIONAL CONFERENCE ON DIGITAL SIGNAL PROCESSING | 2007年

关键词：

license plate recognition; image processing; edge analysis; morphological processing;

D O I：

10.1109/ICDSP.2007.4288612

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

A novel approach based on vertical edge extraction is proposed for car plate detection. III order to manage the detection in low quality images (low contrast, blurred images etc), we first enhance image contrast at candidate regions for car plate. The vertical edges of the enhanced image are then extracted. Using morpholological Filtering, several candidates are Constituted as license plate. Some distinctive features for car plate such as shape, aspect ratio is used to filter out false candidates. Using the correlation between the candidate regions and the model of car plate, the most probable region in the image is declared as the car plate. The experimental results on out-door images confirms the robustness of the proposed method against the severe imaging condition.

引用

页码：435 / +

页数：2

共 11 条

[1]

CHANG SL, 2004, P IEEE INT C INT TRA

[2] A neural network based artificial vision system for licence plate recognition [J].

Draghici, S .

INTERNATIONAL JOURNAL OF NEURAL SYSTEMS, 1997, 8 (01) :113-126

[3]

Gonzalez R. C., 2002, DIGITAL IMAGE PROCES

[4]

MAHINI H, 2006, P IEEE INT C PATT RE

[5]

Martin F., 2002, P IASTED INT C SPPRA

[6]

NIKOLAOS EC, 2006, IEEE T INTELLIGENT T, V7

[7]

PARISI R, 1998, P IEEE INT S CIRC SY, V3, P195

[8]

Shi XF, 2005, LECT NOTES COMPUT SC, V3483, P1159

[9]

Sirithinaphong T., 1998, P 5 INT S SIGN PROC, P455

[10]

Yung N. H. C., 1999, Proceedings 199 IEEE/IEEJ/JSAI International Conference on Intelligent Transportation Systems (Cat. No.99TH8383), P418, DOI 10.1109/ITSC.1999.821094

← 1 2 →