3D Image for Optical Measurement System

• Main Authors: Zhi-Ping Su, 蘇治平
• Other Authors: none
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/07438875657971240900

碩士 === 國立中正大學 === 機械工程所 === 94 === This paper proposes to develop a fast optical measurement system for measuring large objects. This system, which is composed of a charge coupled device and a digital light process at calibration plane, can transform object measurement into digital, which can be used for further implication. The rationale of this system is based on the mapping function to transform two-dimensional image into three-dimensional image, in order to obtain a higher experimental result. The experiment uses gauss filter and normalized image to increase the quality of image and avoid other noises and non-uniform images. With the high quality image measured, it is easier to find the light plane by using center of area defuzzifier. The rationale of center of area defuzzifier concerns the largest slope as the boundary point. Using this method will calculate the exact boundary point. Finally, the experiment will transforms this point into three dimensional data. The experiment tries to measure various objects empirically. However, owing to the fact that each measurement cannot obtain the entire data, it is necessary to move or switch the object measured in order to achieve the full measurement. Nonetheless, iterative closest point registration method is used in the experiment in order to integrate each portion of the data into an integrated one.