| 工业射线底片图像数字化系统的设计 |
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| 引用本文： | 刘军强,王建斐. 工业射线底片图像数字化系统的设计[J]. 西安工业大学学报, 2007, 27(3): 228-233 |
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| 作者姓名： | 刘军强 王建斐 |
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| 作者单位： | 西安工业大学机电工程学院 西安710032(刘军强)，西安陆军学院计算机应用教研室 西安710108(王建斐) |
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| 摘 要： | 工业射线底片由于其黑度大,图像信息量大而使其数字化成为一个难题.采用机器视觉的方法,设计了一套工业射线底片的图像的数字化系统,由光源、成像系统和计算机软硬件系统构成.采用平面亮度强光灯透照底片解决黑度大问题,用亮度无级可调灯解决不同黑度底片的数字化,用暗箱屏蔽环境光以提高图像质量,针对面阵CCD精度的不足,提出用双CCD的方法成像,同时提出了图像拼接的方法并实现拼接.实验结果表明,拍摄的图像质量较好,分辨率达到5.3 lp/mm,不同CCD拍摄的图像可实现无缝拼接.
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| 关 键 词： | 工业射线底片 数字化系统 黑度 图像分辨率 |
| 文章编号： | 1673-9965（2007）03-228-06 |
| 收稿时间： | 2006-12-28 |
| 修稿时间： | 2006-12-28 |
Design of Image Digitization System for Industrial Radiographic Films |
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| LIU Jun-qiang,WANG Jian-fei. Design of Image Digitization System for Industrial Radiographic Films[J]. Journal of Xi'an Institute of Technology, 2007, 27(3): 228-233 |
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| Authors: | LIU Jun-qiang WANG Jian-fei |
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| Abstract: | It is a difficult problem to digitize the image on an industrial radiographic film due to its high blackness and mass image information.A new image digitization system for industrial radiographic films is designed.The system is composed of a light source,an image-forming system,and computer hardware and softwares.A plane intensive light is used to transilluminate a film to resolve the high blackness.A lamp with adjustable brightness is introduced to digitize films with different blackness.A light-tight box is adopted to shield ambient light and improve quality of image.For the low precision of one CCD,two CCDs are used.A splicing method is advanced in order to splice two images together.Experiment results indicate that the image quality is perfect,image resolution ratio is up to 5.3lp/mm,and two images can be spliced without error. |
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| Keywords: | industrial radiographic film digitization system blackness image resolution ratio |
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