【摘要】：針對傳統(tǒng)測量物體撓度/位移方法的準(zhǔn)確率低、誤差率高,提出了激光掃描圖像撓度/位移測量方法。首先對激光光斑圖像進行預(yù)處理,通過色彩識別和閾值判定去除激光的衍射和散射,采用重心法調(diào)整光斑的灰度值,求解出激光束中心,然后根據(jù)多條激光束中心線與物體截面不同傾角和曲率值,采用最小二乘法擬合連續(xù)光滑的撓度曲線,測量得出更可靠的撓度值,最后試驗結(jié)果表明,本文方法能夠?qū)崿F(xiàn)對物體撓度/位移更精確的測量。
[Abstract]:Aiming at the low accuracy and high error rate of traditional methods for measuring deflection / displacement of objects, a laser scanning image deflection / displacement measurement method is proposed. Firstly, the laser spot image is preprocessed, the diffraction and scattering of laser are removed by color recognition and threshold, the gray value of spot is adjusted by the method of gravity center, and the center of laser beam is solved. Then according to the different inclination and curvature value between the center line of the laser beam and the section of the object, the continuous smooth deflection curve is fitted by the least square method, and the more reliable deflection value is obtained. Finally, the experimental results show that, The method in this paper can be used to measure the deflection / displacement of an object more accurately.
【作者單位】： 蘭州文理學(xué)院數(shù)字媒體學(xué)院;
【基金】：甘肅省教育廳研究生導(dǎo)師項目(1215-04)
【分類號】：TN249;TP391.41

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