本文選題：焊點(diǎn)定位 + 色彩特征��； 參考：《計(jì)算機(jī)輔助設(shè)計(jì)與圖形學(xué)學(xué)報(bào)》2017年10期

【摘要】：為防止集成電路由于元件相互影響及受到外部干擾而無法正常工作,對高集成度電路板進(jìn)行絕緣封裝必不可少.針對印刷電路板(printed circuit board,PCB)上焊點(diǎn)區(qū)域小、數(shù)量多、位置密集、形態(tài)多樣等問題,提出基于色彩特征與鄰域信息的多形態(tài)焊點(diǎn)定位方法.首先通過建立色彩特征模型,提取PCB的單色色度區(qū)間特征與多色色差特征;然后提出了基于色彩特征的多形態(tài)焊點(diǎn)定位方法,在完成焊點(diǎn)初定位的基礎(chǔ)上,采用窗口掃描法提取像素點(diǎn)的鄰域信息,進(jìn)一步提出基于鄰域信息的焊點(diǎn)精確定位優(yōu)化方法,能夠有效地提高PCB焊點(diǎn)區(qū)域的定位精度.實(shí)驗(yàn)結(jié)果表明,該方法能大幅提高焊點(diǎn)區(qū)域的填充率及濾除誤判像素點(diǎn),滿足對PCB上多形態(tài)焊點(diǎn)區(qū)域的精確定位需求.
[Abstract]:In order to prevent the integrated circuit from not working properly due to the mutual influence of components and external interference, it is necessary to package the high integrated circuit board with insulation. In order to solve the problems of small solder joint area, large number, dense position and diverse shape on printed circuit boardstick (PCB), a multi-shape solder joint location method based on color features and neighborhood information is proposed. Firstly, the monochromatic interval feature and polychromatic difference feature of PCB are extracted by establishing a color feature model, and then a multi-shape solder joint location method based on color feature is proposed, which is based on the initial location of solder joint. The neighborhood information of pixels is extracted by window scanning method, and the optimization method of solder joint location based on neighborhood information is put forward, which can effectively improve the location accuracy of PCB solder joint area. The experimental results show that this method can greatly improve the filling rate of solder joint area and filter out the misjudged pixel points, and meet the need of accurate location of multi-shape solder joint area on PCB.
【作者單位】： 南京師范大學(xué)電氣與自動(dòng)化工程學(xué)院;江蘇省三維打印裝備與制造重點(diǎn)實(shí)驗(yàn)室;東南大學(xué)儀器科學(xué)與工程學(xué)院;
【基金】：國家自然科學(xué)基金(61601228,51407095,61273243) 江蘇省自然科學(xué)基金(BK20161021,BK20151548) 江蘇省高校自然科學(xué)基金(15KJB510016) 江蘇省三維打印裝備與制造重點(diǎn)實(shí)驗(yàn)室項(xiàng)目(BM2013006)資助開放課題(3DL201607)
【分類號】：TN41;TP391.41
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本文編號：1940073