基于圖像的前車狀態(tài)警示系統(tǒng)設(shè)計與實現(xiàn)
本文選題:圖像采集 + 車牌定位; 參考:《大連海事大學》2017年碩士論文
【摘要】:我國汽車保有量逐年增加給道路交通安全帶來了巨大壓力,每年追尾交通事故均造成大量的人員傷亡和巨大的經(jīng)濟損失,因此,降低或避免此類事故發(fā)生將對改善國內(nèi)交通安全環(huán)境起到重要作用。為此,本課題研究一種基于圖像的前車狀態(tài)警示系統(tǒng),輔助駕駛員感知前車狀態(tài)。該系統(tǒng)通過圖像傳感器采集本車前方車輛和路面情況,經(jīng)圖像處理后可識別前車車牌及前車車燈狀態(tài)。本文完成的主要工作包括:1.通過對機器視覺在智能交通領(lǐng)域的應(yīng)用分析,給出了現(xiàn)有主流機器視覺方法在道路交通領(lǐng)域應(yīng)用時的優(yōu)缺點,確定了課題的研究內(nèi)容和方案。2.從前車狀態(tài)檢測需求出發(fā),經(jīng)過可行性及成本等分析后給出了基于圖像的前車狀態(tài)警示系統(tǒng)的解決方案,明確了系統(tǒng)中圖像采集單元、圖像處理單元和警示單元的功能及其他們之間的關(guān)系。3.針對前車狀態(tài)警示系統(tǒng)的圖像采集和處理單元硬件,給出了基于海思HI3518E處理器平臺和OV9712圖像傳感器的圖像采集系統(tǒng)的組成和開發(fā)環(huán)境。4.針對前車狀態(tài)警示系統(tǒng)的車燈狀態(tài)識別算法中車燈位置,本文提出了一種簡易的車牌算法,可快速有效的識別前車車牌區(qū)域,從而可進一步獲得前車車燈位置,并通過實驗驗證了該方法的有效性。5.針對前車狀態(tài)警示系統(tǒng)的車燈狀態(tài)識別算法中車燈狀態(tài),給出了一種在圖像HSI空間根據(jù)車燈亮度信息判斷車燈明暗的方法,并通過實驗驗證了該方法的有效性。綜上所述,通過本文給出的前車狀態(tài)警示系統(tǒng),可在一定程度上有效檢測前車狀態(tài)并告知本車駕駛員,從而能夠有效降低或避免追尾事故的發(fā)生。
[Abstract]:The increase in the number of cars in our country has brought great pressure to road traffic safety year by year. Every year, rear-end traffic accidents cause a large number of casualties and huge economic losses. Reducing or avoiding such accidents will play an important role in improving the domestic traffic safety environment. Therefore, this paper studies an image-based warning system to assist drivers to perceive the state of the front car. The system collects the vehicle and road conditions in front of the vehicle through the image sensor, and after image processing, it can recognize the status of the vehicle license plate and the vehicle lamp in front of the vehicle. The main work accomplished in this paper includes 1: 1. Based on the analysis of the application of machine vision in the field of intelligent transportation, the advantages and disadvantages of the existing mainstream machine vision methods in the field of road traffic are given, and the research content and scheme of the subject are determined. Based on the analysis of the feasibility and cost of the former vehicle status detection system, the solution of the vehicle status warning system based on the image is given, and the image acquisition unit in the system is defined. The function of image processing unit and warning unit and their relationship. Aiming at the hardware of the image acquisition and processing unit of the vehicle status warning system, the composition and development environment of the image acquisition system based on Hayes HI3518E processor platform and OV9712 image sensor are presented. In this paper, a simple license plate algorithm is proposed to recognize the position of vehicle lights in the vehicle lamp status recognition algorithm of the warning system, which can quickly and effectively identify the front car license plate area, and thus further obtain the position of the headlight. The effectiveness of the method is verified by experiments. Aiming at the vehicle lamp state recognition algorithm of the vehicle state warning system in front, this paper presents a method to judge the light and shade of the vehicle lamp in the image HSI space according to the luminance information of the vehicle lamp, and the validity of the method is verified by experiments. To sum up, the warning system can effectively detect the state of the front car and inform the driver of the vehicle to a certain extent, so as to effectively reduce or avoid the occurrence of rear-end accident.
【學位授予單位】:大連海事大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:TP391.41
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