一个基于像素编组和逐级质量控制的线段检测算子
Received:March 22, 2016  Revised:October 02, 2016  点此下载全文
引用本文:李畅,魏东.一个基于像素编组和逐级质量控制的线段检测算子[J].Journal of Infrared and Millimeter Waves,2016,35(6):681~687
Hits: 365
Download times: 438
Author NameAffiliationE-mail
LI Chang Central China Normal University lcshaka@126.com 
WEI Dong Central China Normal University  
中文摘要:针对现有线段提取算法存在的不足, 提出了一个点元梯度特征引导下的线段检测算子, 在编组的前、中和后三大环节进行逐级质量控制.基于梯度最优并结合邻近性、方向性等规则控制“欠提取”错误, 采用假设检验方法控制“过提取”错误.多源数据实验表明, 提出的算法在编组中不易受到弱梯度像素或噪声的干扰, 与经典的线段提取算子相比, 在线段提取的效率和稳健性都有一定的优势, 有利于实现从场景到结构的重要视觉符号描述.
中文关键词:线段检测  像素编组  质量控制  假设检验  欠提取  过提取
 
A line segment detector based on pixels grouping and step-by-step quality control
Abstract:To resolve the “false negative” and “false positive” problems in the current line segment detectors, we proposed a novel line segment detector which organizes pixels under the guidance of pixels’ gradient and improves reliability by step-by-step quality control. Before organizing pixels, initial optimized seed points were extracted according to image gradient. Under organizing, in order to solve the bad performance, e.g. noise of weak gradient, pixels were grouped and connected by considering proximity, orientation and gradient optimization to control false negative. After organizing pixels, chain division and hypothesis testing for quality control were employed to avoid false positive. When compared with state-of-the-art algorithms by visible light and color infrared (CIR) images, such as Probability Hough Transform (PHT), EDlines and LSD (Line Segment Detector), the proposed algorithm has advantages in efficiency and robustness, so it is of great significance for digital photogrammetry, computer vision and remotely sensed information extraction.
keywords:line segment detector, pixels grouping, quality control, hypothesis testing, false negative, false positive
View Full Text  View/Add Comment  Download reader

Copyright:《Journal of Infrared And Millimeter Waves》