Digital drum camera for dynamic recording

被引:6
作者
Asundi, AK
Sajan, MR
机构
[1] University of Hong Kong, Department of Mechanical Engineering, Hong Kong
关键词
digital imaging; high-speed photography; dynamic photoelasticity; visual inspection; machine vision;
D O I
10.1117/1.600746
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Currently, digital imaging and hard copy techniques are extensively used in photomechanics research. However, the slow speed of popular video systems limits their use in dynamic photomechanics. New devices and sensors are being introduced to meet the high-speed requirements in dynamic applications. We report the applications of a low-cost, high-speed time delay and integration (TDI) camera in some of the dynamic photomechanics experiments. TDI is a special operating mode built on the traditional full-frame imager architecture. In this mode, the charge-coupled device (CCD) camera functions similarly to a drum camera. The high sensitivity of the CCD enables the use of low-cost, low-power semiconductor light sources. After a brief description and comparison of TDI operation with conventional recording schemes, two applications are demonstrated. First, dynamic photoelasticity experiments using streak and strobe recording are exemplified. In the second demonstration, imaging and inspection of curved objects rotating at high speeds are presented. (C) 1996 Society of Photo-Optical Instrumentation Engineers.
引用
收藏
页码:1707 / 1713
页数:7
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