【摘 要】
:
针对彩色物体的配准问题,提出一种面向RGB-D数据的初始配准方法.通过几何和颜色的邻域信息构建混合特征,并根据混合特征在源点云中获取物体的特征点;由归一化后的颜色值和混合特征构造特征描述符,通过该特征描述符搜索对应点;再由分块对齐策略,进一步剔除相似性较小的点对,将剩余特征点进行分块配准,选择最优的刚性变换.为了验证该初始配准方法的有效性,通过精确配准算法进一步细化配准结果.实验结果表明,基于混合
论文部分内容阅读
针对彩色物体的配准问题,提出一种面向RGB-D数据的初始配准方法.通过几何和颜色的邻域信息构建混合特征,并根据混合特征在源点云中获取物体的特征点;由归一化后的颜色值和混合特征构造特征描述符,通过该特征描述符搜索对应点;再由分块对齐策略,进一步剔除相似性较小的点对,将剩余特征点进行分块配准,选择最优的刚性变换.为了验证该初始配准方法的有效性,通过精确配准算法进一步细化配准结果.实验结果表明,基于混合特征的RGB-D数据初始配准方法对于两片部分重叠点云配准是有效的.
其他文献
本文采用云南测震台网的观测报告数据,利用双差定位方法对2014年鲁甸M_S6.5地震及其强余震序列进行了重定位,获得了3 658个地震事件的震源参数。重定位后地震序列的震中分布显示,余震分布存在两个优势方向,分别为近EW向和SES向,呈共轭型分布,近EW向条带展布长度为30 km,SES向条带展布长度为20 km;震源深度的分布显示,地震序列总体表现为主震附近震源较深,沿近EW向和SES向逐渐变浅
This study constructs a 3 D velocity structure model of the Ludian region in the Yunnan province, southwestern China, and simulates ground motion propagation of the 2014 Ludian Ms 6.5 earthquake. It a
This study is aimed at developing statistical equations to estimate the inelastic displacement ratio of singledegree-of-freedom systems subjected to far fault repeated earthquakes. In the study, peak
Modern Earthquake Risk Assessment(ERA) methods usually require seismo-tectonic information for Probabilistic Seismic Hazard Assessment(PSHA) that may not be readily available in developing countries.
Numerical simulation in transverse isotropic media with tilted symmetry axis(TTI) using the standard staggered-grid finite-difference scheme(SSG)results in errors caused by averaging or interpolation.
In modern society, the population, wealth and social functions are increasingly concentrated in a few large cities. Such concentration brings about efficiency while at the same time it increases the v
It is now common practice to perform simultaneous traveltime inversion for the velocity field and the reflector geometry in reflection/refraction tomography, or the velocity field and the hypocenter l
当地时间8月12日凌晨,"帕克"太阳探测器从美国佛罗里达州卡纳维拉尔角空军基地发射升空。据报道,帕克太阳探测器价值15亿美元,这将是人造航天器首次抵达恒星大气层,"触摸"太阳。
Computer-generated holography(CGH) is a technique for converting a three-dimensional(3D) object scene into a two-dimensional(2D), complex-valued hologram. One of the major bottlenecks of CGH is the in
北京时间8月12日15:31分,众所瞩目的帕克太阳探测器在美国卡纳维拉尔角空军基地搭乘德尔塔4重型火箭发射升空,开启了为期七年的太阳探索之旅。这个由美国航天局耗资15亿美元研制的太阳探测器将以每小时69万千米的速度穿越太阳外日冕层,通过搭载的科学仪器来对太阳风、太阳风暴及日冕层进行探测。探测器上搭载的探测设备有:"太阳风电子、阿尔法粒子与质子探测仪","太阳风宽视场成像仪","电磁场探测仪","太