【摘要】：針對三維編織復(fù)合材料預(yù)制件表面編織角人工測量準(zhǔn)確性差、效率低等問題,提出了一種基于霍夫變換的三維編織復(fù)合材料預(yù)制件表面編織角測量方法.首先對圖像進(jìn)行傾斜校正,然后根據(jù)水平灰度投影曲線相鄰波峰、波谷的位置分割出每一行花節(jié),并計算編織材料的紋理方向;基于霍夫變換去除每一行第一個不完整的花節(jié),并在此基礎(chǔ)上分割出所有完整花節(jié);在每一個花節(jié)區(qū)域利用霍夫變換檢測直線,根據(jù)兩條交叉直線的斜率計算得到每一個花節(jié)的編織角.實驗結(jié)果表明:本文方法的測量絕對誤差小于0.5°.
[Abstract]:Aiming at the problems of poor accuracy and low efficiency in measuring the surface braiding angle of 3D braided composite preforms, a method of measuring the surface braiding angle of 3D braided composite preforms based on Hough transform is proposed. Firstly, the image is skew corrected, then each row of flower nodes is segmented according to the position of the wave peaks and troughs according to the horizontal gray projection curve, and the texture direction of the braided material is calculated. The first incomplete flower section of each row is removed based on the Hough transform and all the complete flower nodes are segmented on this basis. Hough transform is used to detect the straight line in each flower node region, and the weaving angle of each flower node is calculated according to the slope of two cross lines. The experimental results show that the absolute error of the method is less than 0.5 擄.
【作者單位】： 天津工業(yè)大學(xué)電子與信息工程學(xué)院;天津工業(yè)大學(xué)天津市光電檢測技術(shù)與系統(tǒng)重點實驗室;
【基金】：高等學(xué)校博士學(xué)科點專項科研基金項目(20131201110001) 中國紡織工業(yè)聯(lián)合會應(yīng)用基礎(chǔ)研究項目(J201509)
【分類號】：TB33;TP391.41
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本文編號：2341735