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结合区域增长与RANSAC的机载LiDAR点云屋顶面分割
屋顶面分割 迭代区域增长 RANSAC 机载LiDAR点云
2021/6/30
建筑物屋顶面大小差异较大、形状复杂、数量不确定等特点，以及机载LiDAR点云密度不均、分布不规则、缺乏语义信息等特性，对屋顶面的准确分割造成了很大干扰，因此现有分割方法的精度和适用性仍有待提高。针对上述问题，本文提出一种结合区域增长与RANSAC的机载LiDAR点云屋顶面分割方法。首先，引入稳健的法向量估计算法计算点云法向量，利用提出的迭代区域增长策略和RANSAC提取多个可靠屋顶面片；然后，基于...
AUTOMATED BUILDING DETECTION USING RANSAC FROM CLASSIFIED LIDAR POINT CLOUD DATA
LiDAR RANSAC Building Detection Plane Detection Python LAS Point Cloud
2018/11/8
For the past 10 years, the Philippines has seen and experienced the growing force of different natural disasters and because of this the Philippine governement started an initiative to use LiDAR techn...
AN INTEGRATED RANSAC AND GRAPH BASED MISMATCH ELIMINATION APPROACH FOR WIDE-BASELINE IMAGE MATCHING
Image Matching Outlier Detection Epipolar Line Graph Matching Wide-baseline Matching
2016/1/15
In this paper we propose an integrated approach in order to increase the precision of feature point matching. Many different algorithms have been developed as to optimizing the short-baseline image ma...
Generation of Roof Topologies Using Plane Fitting with RANSAC
LIDAR RANSAC building reconstruction roof topology city models rule-based approach
2015/12/4
For the acquisition of Digital Surface Models (DSM), LIDAR has proven a reliable and accurate observation technique. In contrast to the generation of a Digital Terrain Model, which can be derived from...
HOUGH-TRANSFORM AND EXTENDED RANSAC ALGORITHMS FOR AUTOMATIC DETECTION OF 3D BUILDING ROOF PLANES FROM LIDAR DATA
LIDAR Processing Detection Extraction Building Segmentation Modelling
2015/11/10
Airborne laser scanner technique is broadly the most appropriate way to acquire rapidly and with high density 3D data over a city.Once the 3D Lidar data are available, the next task isthe automatic da...
ESTIMATING THE ESSENTIAL MATRIX:GOODSAC VERSUS RANSAC
essential matrix robust estimation RANSAC structure from motion
2015/8/31
GOODSAC is a paradigm for estimation of model parameters given measurements that are contaminated by outliers. Thus, it is an alternative to the well known RANSAC strategy. GOODSAC’s search for a prop...
ESTIMATING THE ESSENTIAL MATRIX: GOODSAC VERSUS RANSAC
essential matrix robust estimation RANSAC structure from motion
2015/8/28
GOODSAC is a paradigm for estimation of model parameters given measurements that are contaminated by outliers. Thus, it is an alternative to the well known RANSAC strategy. GOODSAC’s search for a prop...
Epipolar Rectification for CARTOSAT-1 Stereo Images Using SIFT and RANSAC
Epi-polar rectification image matching SIFT, Ransac Cartosat-1 stereo
2014/12/16
Cartosat-1 provides stereo images of spatial resolution 2.5 m with high fidelity of geometry. Stereo camera on the spacecraft has look angles of +26 degree and -5 degree respectively that yields effec...
Improving HySpex Sensor Co-registration Accuracy using BRISK and Sensor-model based RANSAC
Matching Estimation Orthorectification Photogrammetry Hyper spectral
2014/12/4
In this paper a method to improve the co-registration accuracy of two separate HySpex SWIR and VNIR cameras is proposed. The first step of the presented approach deals with the detection of point feat...
视觉传感器网络中基于RANSAC的顽健定位算法
视觉传感器网络 目标定位 顽健定位 RANSAC
2014/3/21
视觉传感器网络由于节点故障或环境变化将导致节点对目标的观测数据出现错误，而基于最小二乘的多视觉信息融合定位方法将因此造成较大的定位误差。针对此问题提出一种基于集中式RANSAC的顽健定位算法，将错误数据进行筛选剔除，从而提高定位精度，进一步针对集中式RANSAC将会导致单个节点的计算复杂度过高而导致网络节点能耗不平衡问题，提出基于分布式RANSAC的顽健定位算法，从而将大量的迭代计算平均分布在各个...
QUALITY ANALYSIS ON RANSAC-BASED ROOF FACETS EXTRACTION FROM AIRBORNE LIDAR DATA
Analysis Quality Algorithms Extraction LIDAR Building
2014/4/28
RANSAC algorithm is a robust method for model estimation. It is widely used in the extraction of geometry primitives and 3D model reconstruction. However, there has been relatively little comprehensiv...
RANSAC平面估计算法在路面物体体积测量中的应用
体积测量 点云优化 RANSAC算法 路面三维重建
2014/4/23
在利用车载单线式激光扫描仪实施路面三维重建及路面目标物体积测量的应用中，使用RANSAC平面估计算法获得了路面的零高度平面，提高了路面目标物体积计算的精度。实际测试表明，对路面上一不规则形状坑，采用注水法测量得到的坑体积为2.25立方米，点云经优化前后计算得到的坑体积分别为1.86立方米和2.10立方米，误差分别为17.3%和6.7%，点云优化过程耗时约7秒。因此，本文的路面三维点云优化方法速度快...
Video Stabilization based on Saliency driven SIFT Matching and discriminative Ransac
Visual Attention Model discriminative SIFT feature Motion Analysis Video Stabilization
2013/7/24
Inspired by the stability functions of human vision system, we present a novel video stabilization method based on saliency driven SIFT matching and discriminative RANSAC. Firstly, a saliency detectio...