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作者：

郭培林，陳金水，盧建剛（浙江大學(xué)，浙江 杭州 310058）

戴柏炯（杭州朝陽橡膠有限公司，浙江 杭州 310018）

史敦禹（中策橡膠（建德）有限公司，浙江 建德 311607）

孫洪林（杭州中策清泉實(shí)業(yè)有限公司，浙江 杭州 314100）

摘要：輪胎是我國(guó)國(guó)民經(jīng)濟(jì)的重要支柱，利用X光機(jī)對(duì)輪胎進(jìn)行質(zhì)量檢測(cè)在整個(gè)輪胎生產(chǎn)過程中是極其重要的一道工序。目前國(guó)內(nèi)工廠普遍采用肉眼觀察輪胎X光圖像進(jìn)行識(shí)別，存在效率低下、人工成本高等一系列問題，因此采用計(jì)算機(jī)視覺技術(shù)進(jìn)行自動(dòng)識(shí)別是今后的發(fā)展方向。本文將目標(biāo)檢測(cè)算法Faster R-CNN應(yīng)用于輪胎質(zhì)檢，并加以改進(jìn)：（1）在模型中融合FPN（Feature Pyramid Network，特征金字塔網(wǎng)絡(luò)），用以解決輪胎瑕疵尺度變化大的問題；（2）在算法中融合背景特征信息，對(duì)候選框進(jìn)行重排名，增加檢測(cè)模型最終的檢測(cè)精度。通過對(duì)某輪胎廠提供的輪胎X光圖像進(jìn)行瑕疵檢測(cè)對(duì)比表明，這些改進(jìn)措施提高了檢測(cè)模型的mAP（mean Average Precision）指標(biāo)，具有良好的應(yīng)用前景。

關(guān)鍵詞：輪胎X光圖像；瑕疵檢測(cè)；深度學(xué)習(xí)；背景特征

Abstract: The tire industry is an important part of China's nationale conomy. The use of X-ray machines for tie quality inspection is an extremely important process in the tire production process.At present, domestic factories generally use the naked eye to observe tire X-ray images for recognition. There are a series of problems such as low efficiency and high labor cost. Therefore,automatic identification by computer vision technology is the future development direction. In this paper, the Faster R-CNN is applied to tire quality inspection, and the following improvements are made: Firstly, FPN is integrated in the model to solve the problem of large changes in tire defect scale; secondly, the background feature information is integrated in the algorithm, the RoIs is re-ranked to increase the final detection accuracy of the detection model. The comparison of defect detection on the tire X-ray image shows that these improvement measures improve the mAP value of the detection model and have a good application prospect.

Key words: Tire X-ray image; Defect detection; Deep learning; Background feature

在線預(yù)覽：輪胎X光圖像瑕疵檢測(cè)Faster R-CNN算法改進(jìn)研究

摘自《自動(dòng)化博覽》2020年8月刊