本文關(guān)鍵詞： 測量 條紋中心 迭代調(diào)整 灰度分布 非對稱　出處：《中國激光》2017年05期 　論文類型：期刊論文

【摘要】：針對結(jié)構(gòu)光測量中條紋灰度非對稱分布使條紋中心提取精度降低的問題,提出了一種應(yīng)用于條紋中心提取的條紋灰度非對稱調(diào)整方法。首先對初始灰度進(jìn)行冪運(yùn)算,將初始灰度和冪運(yùn)算結(jié)果相減,并對相減結(jié)果進(jìn)行灰度補(bǔ)償,然后利用補(bǔ)償后的灰度再進(jìn)行迭代,直至滿足迭代終止條件。此外,分析了條紋灰度非對稱分布的影響因素,提出了條紋灰度分布的評價(jià)參數(shù),并對所提方法進(jìn)行了實(shí)驗(yàn)驗(yàn)證。實(shí)驗(yàn)結(jié)果表明,該方法可以根據(jù)條紋灰度的初始分布情況對條紋灰度進(jìn)行有效調(diào)整,迭代結(jié)果突出了最大值附近的灰度信息,降低了灰度非對稱分布對條紋中心提取的影響,提高了條紋中心提取的精度。上述結(jié)果驗(yàn)證了該方法的有效性和可靠性。
[Abstract]:In order to reduce the precision of stripe center extraction due to the asymmetric distribution of stripe gray in structured light measurement, a new method to adjust the intensity of fringe center is proposed. Firstly, the initial gray level is operated by power operation. The results of initial gray scale and power operation are subtracted, and the subtraction results are compensated by gray scale compensation, and then iterated by the compensated gray scale until the iterative termination condition is satisfied. In addition, the factors influencing the asymmetric distribution of fringe gray scale are analyzed. The evaluation parameters of fringe grayscale distribution are put forward, and the experimental results show that the method can effectively adjust the fringe gray level according to the initial distribution of the fringe gray level. The iterative results highlight the gray level information near the maximum value, reduce the influence of asymmetric gray distribution on the fringe center extraction, and improve the accuracy of the fringe center extraction. The above results verify the effectiveness and reliability of the method.
【作者單位】： 西安交通大學(xué)機(jī)械工程學(xué)院;
【基金】：國家自然科學(xué)基金(51375377)
【分類號】：O43

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本文編號：1547804