基于圖像循環(huán)相關(guān)的列車速度測試方法
發(fā)布時間:2019-07-05 15:15
【摘要】:針對鐵路建筑限界檢測中列車速度測試的要求,提出一種基于雙高頻線陣CCD紅外成像技術(shù)循環(huán)相關(guān)算法速度測試模型,對線陣CCD采集的圖像進(jìn)行循環(huán)相關(guān)仿真分析。利用同一時刻2個線陣相機(jī)采集的圖像循環(huán)相關(guān)計算的像素數(shù)除以相機(jī)的軸心距得到每個像素表征的實際距離K_0,對相鄰時刻同一相機(jī)采集的圖像進(jìn)行循環(huán)相關(guān)計算得到采樣周期內(nèi)移動的像素數(shù)P,K_0與P相乘并除以相機(jī)采樣周期?t得到列車運(yùn)行速度。在此基礎(chǔ)上,設(shè)計一套測速設(shè)備,并在試驗車上進(jìn)行實驗驗證。研究結(jié)果表明:去除背景影響后,圖像循環(huán)相關(guān)算法具有較高的精度;實測速度變化符合列車減速規(guī)律;速度計算誤差為0.007 m/s,能夠滿足限界檢測的要求。
文內(nèi)圖片:
圖片說明:圖1雙高頻線陣CCD紅外成像技術(shù)測速原理
[Abstract]:In order to meet the requirements of train speed test in railway building boundary detection, a cyclic correlation algorithm speed test model based on double high frequency linear CCD infrared imaging technology is proposed, and the cyclic correlation simulation analysis of linear CCD images is carried out. The actual distance K 鈮,
本文編號:2510615
文內(nèi)圖片:
圖片說明:圖1雙高頻線陣CCD紅外成像技術(shù)測速原理
[Abstract]:In order to meet the requirements of train speed test in railway building boundary detection, a cyclic correlation algorithm speed test model based on double high frequency linear CCD infrared imaging technology is proposed, and the cyclic correlation simulation analysis of linear CCD images is carried out. The actual distance K 鈮,
本文編號:2510615
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