【摘要】：通過對目前常用的傳統(tǒng)視頻測速的基本原理的分析,提出了一種基于地面參考系的視頻圖像測速方法。分析了攝像機的標(biāo)定誤差和車速檢測誤差,并提出了減小誤差的解決方案。以地面網(wǎng)格為固定參考系對攝像機進(jìn)行標(biāo)定,提高了攝像機標(biāo)定精度,減少了速度檢測誤差。利用再標(biāo)定的攝像機去抖動方法,有效的消除了攝像機抖動帶來的測量誤差。實驗結(jié)果表明,以地面網(wǎng)格為固定參考系的攝像機標(biāo)定誤差為1%,系統(tǒng)測速誤差為1%�；诘孛鎱⒖枷档囊曨l測速方法,過程簡單,計算量小且測速精度高,很好地滿足了車輛視頻圖像測速系統(tǒng)的要求。
[Abstract]:Based on the analysis of the basic principles of traditional video velocimetry, a method of video image velocimetry based on ground reference system is proposed. The calibration error and the speed measurement error of the camera are analyzed, and the solution to reduce the error is put forward. The camera is calibrated with ground grid as a fixed reference system, which improves the accuracy of camera calibration and reduces the error of speed detection. The measurement error caused by camera jitter is effectively eliminated by using the camera de-jitter method. The experimental results show that the camera calibration error is 1 and the system velocity measurement error is 1 with the ground grid as the fixed reference system. The video velocimetry method based on ground reference system has the advantages of simple process, small computation and high accuracy, which can meet the requirements of vehicle video image speed measurement system.
【作者單位】： 寧波大學(xué)信息科學(xué)與工程學(xué)院;
【基金】：浙江省教育廳科研項目(Y201121170) 寧波市自然科學(xué)基金項目(2012A610042)
【分類號】：TP391.41;U495

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