A STUDY OF THREE DIMENSIONAL MACHINE VISION SURFACE BLENDING TECHNIQUE
碩士 === 國立臺灣大學 === 機械工程學系研究所 === 85 === An Optical noncontact 3-D range scanning measurement technique based o n the principle of triangulation is developed. This system is composed of a ha rmless laser light emitter, two CCD cameras, a frame-grabber card, a motor-dri...
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| Format: | Others |
| Language: | zh-TW |
| Online Access: | http://ndltd.ncl.edu.tw/handle/09283226059872973390 |
| Summary: | 碩士 === 國立臺灣大學 === 機械工程學系研究所 === 85 === An Optical noncontact 3-D range scanning measurement technique based o
n the principle of triangulation is developed. This system is composed of a ha
rmless laser light emitter, two CCD cameras, a frame-grabber card, a motor-dri
ven positioning stage and a rotary stage. The relationship between the laser s
tripe image in the image plane and the related absolute spatial coordinates is
constructed by using the least-squares method. The image noises are removed b
y linear smoothing filters and Gaussian filters. Moreover, the construction of
B-spline Surface reduces the amount of sampled data. This noncontact 3
-D range scanning measurement system is intended for the surface profilometic
measurement and 360-deg profilometry. For the large part or complex surface, a
complete 3D profile can be integrated through the least-squares method and op
timization algorithm of shape error analysis to blend the matching points from
two groups of scanned data.
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