【正文】 e measure of vehicle queue length are essential parts of intelligent transportation system. The identification of the license plate and the measure of vehicle queue length applicants many technologies, such as synthesize puter visiontechnology, the image processing, and the pattern recognition and so on. This paper mainly studied the algorithm of vehicle queue length detection. In the image preprocessing of grayscale image processing, image filtering and image processing two values. In the background modeling algorithm of median background model, Gauss background model and frame difference background model. The final difference method based on the vehicle queue length detection using background, in order to reduce the interference of environmental factors, discussed the elimination of shadow. [Key Words] vehicle queue length detection； vehicle detection； background modeling； shadow elimination 四川大學本科畢業(yè)論文 車輛排隊長度檢測技術(shù)研究 目 錄 1. 緒論 .............................................................................................................................................. 1 研究背景 ........................................................................................................................... 1 論文主要工作 ...................................................................................................................... 2 論文組織與結(jié)構(gòu) ................................................................................................................... 2 2. 背景知識介紹 ............................................................................................................................... 4 圖像處理簡介 ...................................................................................................................... 4 基于視頻的車輛檢測原理 ..................................................................................................... 4 本章小結(jié) ............................................................................................................................. 5 3. 車輛檢測算法研究 ........................................................................................................................ 6 圖像預(yù)處理 .......................................................................................................................... 6 背景建模算法研究 ............................................................................................................... 9 中值背景模型 ............................................................................................................ 9 高斯背景模型 ............................................................................................................ 9 幀差背景模型 ...........................................................................................................10 陰影消除算法研究 ..............................................................................................................12 車輛陰影特性 ...........................................................................................................12 陰影消除算法 ...........................................................................................................13 車輛排隊長度檢測算法研究 ................................................................................................14 本章小結(jié) ............................................................................................................................15 4. 實驗結(jié)果及分析 ..........................................................................................................................16 圖像預(yù)處理實驗結(jié)果及分析 ................................................................................................16 圖像灰度化實驗結(jié)果及分析 ......................................................................................16 圖像二值化實驗結(jié)果及分析 ......................................................................................17 背景建模實驗結(jié)果及分析 ....................................................................................................18 ..........................................................................................18 ......................................................................................18 陰影消除實驗結(jié)果和分析 ....................................................................................................19 車輛排隊檢測實驗結(jié)果 和分析 .............................................................................................20 本章小結(jié) ............................................................................................................................21 5. 相關(guān)工作 .....................................................................................................................................22 國外研究狀況 .....................................................................................................................22 國內(nèi)研究狀況 .....................................................................................................................22 本章小結(jié) ............................................................................................................................23 6. 小結(jié) ............................................................................................................................................24 工作總結(jié) ............................................................................................................................24 心得體會 ............................................................................................................................24 進一步的工作 .....................................................................................................................24 參考文獻 ..........................................................................................................................................26 聲 明 ................................................................................................................