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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...
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...
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...