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Title |
Development of Shape Determination Program for Suspension Bridge Using Digital Image Processing
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Keywords |
현수교 ; 정밀측량 ; 화상변위측정 ; 렌즈왜곡 ; CCD ; 디지털카메라 ; Suspension bridge ; Precision Survey ; Digital Image Processing ; Geometrical Lens Distortion ; Charge Coupled Device ; Digital Camera |
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Abstract |
In this paper, it is presented a digital image processing method and the program (Visual C++) to determine the shape of the suspension bridge. To investigate the precision of this method, a suspension bridge is divided into 5, 13 and 19 images, respectively, by using the 6.3M pixels digital camera with 300mm zoom lens. Obtained results of the Kwang-Ahn Grand Bridge by using this method are fairly close to the real precision surveyed data. The accuracy is more improved by increasing the number of divided images of the structure. The total cost, man power and time of field survey by this method presented in this study could be much more reduced and the developed program could be applied with little modification for other structures like cable-stayed bridges, if lens compensation algorithms and program access capabilities are improved.
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