光电工程
光電工程
광전공정
OPTO-ELECTRONIC ENGINEERING
2013年
3期
81-86
,共6页
交通流监测%分水岭分割%种子点%道路模板
交通流鑑測%分水嶺分割%種子點%道路模闆
교통류감측%분수령분할%충자점%도로모판
traffic flow monitoring%watershed segmentation%road seed%road template
为了在面向交通流监测的航摄图像分析中,使用模板匹配的方法提取道路交通流信息,需要首先计算道路区域的位置和用于追踪道路的模板.实时自动地提取用于识别道路的种子点和追踪模板,为此提出了一种一维无标记分水岭分割方法,需要简单的图像特征计算,不需要人工标记.通过计算道路截面极值,提取波谷区域,然后计算区域相似度,合并相似区域得到分割结果;通过对区域进行排名,并进行区域内放射搜索,识别出道路区域,计算道路追踪模板.结果表明与Canny边缘提取和Hough直线提取结果相比,人工干预较少;且数据处理量减小、道路提取效率提高;模板计算结果较好.
為瞭在麵嚮交通流鑑測的航攝圖像分析中,使用模闆匹配的方法提取道路交通流信息,需要首先計算道路區域的位置和用于追蹤道路的模闆.實時自動地提取用于識彆道路的種子點和追蹤模闆,為此提齣瞭一種一維無標記分水嶺分割方法,需要簡單的圖像特徵計算,不需要人工標記.通過計算道路截麵極值,提取波穀區域,然後計算區域相似度,閤併相似區域得到分割結果;通過對區域進行排名,併進行區域內放射搜索,識彆齣道路區域,計算道路追蹤模闆.結果錶明與Canny邊緣提取和Hough直線提取結果相比,人工榦預較少;且數據處理量減小、道路提取效率提高;模闆計算結果較好.
위료재면향교통류감측적항섭도상분석중,사용모판필배적방법제취도로교통류신식,수요수선계산도로구역적위치화용우추종도로적모판.실시자동지제취용우식별도로적충자점화추종모판,위차제출료일충일유무표기분수령분할방법,수요간단적도상특정계산,불수요인공표기.통과계산도로절면겁치,제취파곡구역,연후계산구역상사도,합병상사구역득도분할결과;통과대구역진행배명,병진행구역내방사수색,식별출도로구역,계산도로추종모판.결과표명여Canny변연제취화Hough직선제취결과상비,인공간예교소;차수거처리량감소、도로제취효솔제고;모판계산결과교호.
In order to extract the road traffic flow information using UAV images, it is necessary to calculate the location of the road area and generate the road template for road tracking. Real-time calculation requires automated seed points extraction for identifying road and generating tracing template. A one-dimensional unmarked watershed segmentation method is proposed, which needs to calculate using the simple image feature, and don't need manual seed points mark. Firstly, by recognizing sectional extremum in the profile of source image road, the valley regions are extracted between extremums and the similarity is calculated through the region. Then, combine the nearly similar regions, get the segmentation results. Secondly, rank the segmentation regions, search radiology in the ranked regions, and identify the road area and calculate road track template. Experimental results show that the method need less manual intervention and more efficiency than the Canny edge extraction and Hough line extraction under the same conditions. By fitting the road edge points by the least squares method to get the direction of the road, the calculation of road direction is accurate, and the calculated tracking template is consistent with the actual that.