A novel image sensor for raised characters based on structured-light

被引：2

作者：

Li, Xueyong ^{[1
]}

Lu, Changhou ^{[1
]}

Xiao, Rujing ^{[1
]}

Zhang, Jianchuan ^{[1
]}

Ding, Jie ^{[1
]}

机构：

[1] Shandong Univ, Jinan 250100, Peoples R China

来源：

SENSOR REVIEW | 2013年 / 33卷 / 02期

关键词：

Image sensor; Line structured-light; Raised characters; Image processing; Sensors; RECOGNITION;

D O I：

10.1108/02602281311299671

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Purpose - The purpose of this paper is to present a novel image sensor technology for raised characters based on line structured-light. It can convert raised character's three-dimensional (3D) features into image's grayscale levels. Design/methodology/approach - The measurement principle and mathematical model are described. An experimental device is established and system parameters are calibrated. A grayscale conversion algorithm is proposed to convert the distortion of laser stripe to the grayscale intensity of image. The article also introduces a four-factor method to assess the image quality of characters. Findings - Experimental results show that the method can get high-contrast images of raised characters that are conventionally low-contrast with the background. Besides, the method does not need complicated calibration and mass computation, which makes the system structure simple and increases the speed of image acquisition. Originality/value - The paper presents a novel image acquisition method for raised characters.

引用

页码：134 / 140

页数：7

共 13 条

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[2]

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[3]

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