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Shen Bangxing
Wu Wenjun
Zhang Yepeng
School of Mechanical Engineering,
Hubei University of Technology,
Wuhan 430068, China
Shen Gang
Software College,
Huazhong University of Science
and Technology,
Wuhan 430074, China
Yang Liangen
School of Mechanical Engineering,
Hubei University of Technology,
Wuhan 430068, China |
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CHARACTER DETECTION AND
RECOGNITION SYSTEM OF BEER
BOTTLES*
Abstract:
An optical imaging system and a configuration characteristic algorithm are presented to reduce the difficulties in extracting intact characters image with weak contrast, in recognizing characters on fast moving beer bottles. The system consists of a hardware subsystem, including a rotating device, CCD, 16 mm focus lens, a frame grabber card, a penetrating lighting and a computer, and a software subsystem. The software subsystem performs pretreatment, character segmentation and character recognition. In the pre-treatment, the original image is filtered with preset threshold to remove isolated spots. Then the horizontal projection and the vertical projection are used respectively to retrieve the character segmentation. Subsequently, the configuration characteristic algorithm is applied to recognize the characters. The experimental results demonstrate that this system can recognize the characters on beer bottles accurately and effectively; the algorithm is proven fast, stable and robust, making it suitable in the industrial environment.
Key words:
Optical imaging system Raised character recognition Configuration characteristic algorithm |