中国科技论文
中國科技論文
중국과기논문
Sciencepaper Online
2015年
10期
1170-1173,1181
,共5页
王健%张振海%李科杰%张东红%李剑%柳新宇
王健%張振海%李科傑%張東紅%李劍%柳新宇
왕건%장진해%리과걸%장동홍%리검%류신우
无人车%焦散面%虚拟投影中心%全景视觉%探测距离
無人車%焦散麵%虛擬投影中心%全景視覺%探測距離
무인차%초산면%허의투영중심%전경시각%탐측거리
unmanned vehicles%caustic surface%virtual center of projection%panoramic vision%detection range
针对应用最多的2种单视点曲面反射式全景视觉系统———双曲面反射式和抛物面反射式全景视觉系统存在的安装精度高和远心透镜造价高等缺点,提出了多视点抛物面反射式全景视觉系统。首先分析了系统视点的分布情况,建立了系统成像的参数模型,利用类比单视点曲面反射式全景视觉系统模型进行投影点解算,然后分析了焦散面的特性。其次利用系统成像模型依次建立了系统的最大仰角、最大水平探测距离和分辨率的参数模型,讨论了对其产生影响的因数。在此分析的基础上研制了多视点抛物面反射式全景视觉系统样机,该样机成像效果好、安装精度高、成本低。最后实验验证了最大仰角参数模型、最大水平探测距离参数模型和分辨率的参数模型的正确性,最大仰角参数且与抛物面反射镜参数 p成反比,最大水平探测距离参数与目标大小成正比,分辨率的参数与目标大小成正比且与目标所处位置的远近成反比。
針對應用最多的2種單視點麯麵反射式全景視覺繫統———雙麯麵反射式和拋物麵反射式全景視覺繫統存在的安裝精度高和遠心透鏡造價高等缺點,提齣瞭多視點拋物麵反射式全景視覺繫統。首先分析瞭繫統視點的分佈情況,建立瞭繫統成像的參數模型,利用類比單視點麯麵反射式全景視覺繫統模型進行投影點解算,然後分析瞭焦散麵的特性。其次利用繫統成像模型依次建立瞭繫統的最大仰角、最大水平探測距離和分辨率的參數模型,討論瞭對其產生影響的因數。在此分析的基礎上研製瞭多視點拋物麵反射式全景視覺繫統樣機,該樣機成像效果好、安裝精度高、成本低。最後實驗驗證瞭最大仰角參數模型、最大水平探測距離參數模型和分辨率的參數模型的正確性,最大仰角參數且與拋物麵反射鏡參數 p成反比,最大水平探測距離參數與目標大小成正比,分辨率的參數與目標大小成正比且與目標所處位置的遠近成反比。
침대응용최다적2충단시점곡면반사식전경시각계통———쌍곡면반사식화포물면반사식전경시각계통존재적안장정도고화원심투경조개고등결점,제출료다시점포물면반사식전경시각계통。수선분석료계통시점적분포정황,건립료계통성상적삼수모형,이용류비단시점곡면반사식전경시각계통모형진행투영점해산,연후분석료초산면적특성。기차이용계통성상모형의차건립료계통적최대앙각、최대수평탐측거리화분변솔적삼수모형,토론료대기산생영향적인수。재차분석적기출상연제료다시점포물면반사식전경시각계통양궤,해양궤성상효과호、안장정도고、성본저。최후실험험증료최대앙각삼수모형、최대수평탐측거리삼수모형화분변솔적삼수모형적정학성,최대앙각삼수차여포물면반사경삼수 p성반비,최대수평탐측거리삼수여목표대소성정비,분변솔적삼수여목표대소성정비차여목표소처위치적원근성반비。
Multi‐viewpoint parabolic reflector based panoramic vision system was presented ,because of the disadvantages of the parabolic reflector and hyperboloid reflector based panoramic vision systems which are used most widely in the single viewpoint curved reflector based panoramic vision system .The distribution of the system viewpoint was first analyzed ,and then the param‐eter model of system imaging was established .The projection point was solved using single viewpoint curved reflector based pano‐ramic vision system by analogy and the caustic surface’s properties was analyzed .Secondly ,the relationship between parameters of the maximum elevation ,the maximum detection horizontal range and resolution was established ,and the influence factors were analyzed .Based on these ,a prototype of multi‐viewpoint parabolic reflector based panoramic vision system was designed with lower cost ,higher installation accuracy and better imaging quality .Finally ,the maximum elevation ,maximum horizontal detec‐tion range and the resolution were verified experimentally ,and it was found that the maximum elevation is inversely proportional to the parameter p of parabolic reflector ,the maximum horizontal detection range is proportional to the target size and the resolu‐tion is proportional to the target size but is inversely proportional to the distance of the target location .