搜索结果: 1-15 共查到“知识库 SLAM”相关记录45条 . 查询时间(0.064 秒)
针对移动机器人视觉同步定位与地图创建中由于相机大角度转动造成的帧间匹配失败以及跟踪丢失等问题,提出了一种基于局部图像熵的细节增强视觉里程计优化算法.建立图像金字塔,划分图像块进行均匀化特征提取,根据图像块的信息熵判断其信息量大小,将对比度低以及梯度变化小的图像块进行删除,减小图像特征点计算量.对保留的图像块进行亮度自适应调整,增强局部图像细节,尽可能多地提取能够表征图像信息的局部特征点作为相邻帧匹...
淋巴细胞信号活化分子(SLAM)是小反刍兽疫病毒(PPRV)在淋巴细胞的主要受体。本研究旨在探索PPRV感染细胞源外泌体对山羊SLAM表达的影响。通过荧光定量PCR法、流式细胞术和Western blot技术检测PPRV疫苗毒株N75-1感染山羊外周血单核细胞(PBMCs)源外泌体(Exo-PPRV)共育对接纳细胞(正常山羊PBMCs)中SLAM表达水平和细胞因子分泌水平的影响。结果表明,与正常细...
为研究山羊源novel_miR218对小反刍兽疫病毒(PPRV)在淋巴细胞的主要受体——淋巴细胞信号活化分子(SLAM)表达水平的调节作用,通过荧光定量PCR法和Western blot技术检测PPRV疫苗毒N75-1株接种山羊外周血单核细胞(PBMCs)中SLAM和novel_miR218表达变化以及病毒增殖水平,然后检测novel_miR218模拟物(novel_miR218 mimic)和拮...
旨在构建稳定表达SLAM受体的SLAM-Vero细胞系和SLAM-BHK21细胞系,并比较其对犬瘟热病毒(CDV)野毒株的敏感性,为CDV野毒株的快速分离与研究提供一种有效的工具。将真核表达载体Pcag-SLAM分别转染Vero细胞和BHK21细胞。经G418压力筛选结合有限稀释法筛选阳性克隆株,并通过RT-PCR、间接免疫荧光鉴定(IFA)和Western blot等方法对稳定表达SLAM受体的...
“TORINO 1911” PROJECT: A CONTRIBUTION OF A SLAM-BASED SURVEY TO EXTENSIVE 3D HERITAGE MODELING
SLAM photogrammetry LiDAR Zeb Revo RT Mobile Mapping Systems landscape Cultural Heritage
2018/6/4
In the framework of the digital documentation of complex environments the advanced Geomatics researches offers integrated solution and multi-sensor strategies for the 3D accurate reconstruction of str...
OPEN PIT MINE 3D MAPPING BY TLS AND DIGITAL PHOTOGRAMMETRY: 3D MODEL UPDATE THANKS TO A SLAM BASED APPROACH
TLS digital photogrammetry open pit mine SLAM mapping automatic localization
2018/6/5
The state of the art of 3D surveying technologies, if correctly applied, allows to obtain 3D coloured models of large open pit mines using different technologies as terrestrial laser scanner (TLS), wi...
A VARIANT OF LSD-SLAM CAPABLE OF PROCESSING HIGH-SPEED LOW-FRAMERATE MONOCULAR DATASETS
monocular visual odometry filter-based visual odometry Augmented Reality
2018/3/6
We develop a new variant of LSD-SLAM, called C-LSD-SLAM, which is capable of performing monocular tracking and mapping in high-speed low-framerate situations such as those of the KITTI datasets. The m...
基于点特征的视觉SLAM(同时定位与地图构建)算法存在计算量大、环境存储空间负荷高、定位误差较大的问题,为此,提出了一种基于点、线段、平面特征融合的视觉SLAM算法—PLP-SLAM.在扩展卡尔曼滤波(EKF)框架下,首先利用点特征估计机器人当前位姿,然后构建了基于点、线、平面特征的观测模型,最后建立了带平面约束的线段特征数据关联方法及系统状态更新模型,并利用线段和平面特征描述环境信息.在公开数据...
A LASER-SLAM ALGORITHM FOR INDOOR MOBILE MAPPING
SLAM Bayes Filter Graph Optimization Sub-maps Virtual Landmark Indoor Mobile Mapping
2016/11/8
A novel Laser-SLAM algorithm is presented for real indoor environment mobile mapping. SLAM algorithm can be divided into two classes, Bayes filter-based and graph optimization-based. The former is oft...
A FAST AND FLEXIBLE METHOD FOR META-MAP BUILDING FOR ICP BASED SLAM
LiDAR 3D point cloud ICP SLAM Mobile Mapping
2016/7/27
Recent developments in LiDAR sensors make mobile mapping fast and cost effective. These sensors generate a large amount of data which in turn improves the coverage and details of the map. Due to the l...
Augmenting ViSP’s 3D Model-Based Tracker with RGB-D SLAM for 3D Pose Estimation in Indoor Environments
Pose estimation ViSP RGB-D SLAM tracking
2016/7/5
This paper presents a novel application of the Visual Servoing Platform’s (ViSP) for pose estimation in indoor and GPS-denied outdoor environments. Our proposed solution integrates the trajectory solu...
PPRV属副黏病毒科麻疹病毒属,主要感染小反刍动物,特别是山羊较为易感,易感羊群发病率通常达 60%以上,病死率高达 50%以上。主要结构蛋白包含有蛋白N、P、M、F、H、L蛋白,病毒H蛋白与细胞膜上受体蛋白相结合,启动病毒侵入细胞,是引起细胞病变(CPE) 的决定因素。
无人机SLAM避障技术研究
无人机 同时定位与地图创建 避障 人工势场
2016/10/12
针对无人机没有考虑障碍规避而导致无人机的同时定位与地图构建(simultaneous localization and mapping, SLAM)任务无法完成的问题,提出一种改进的人工势场法。通过建立一个包含无人机到目标点的距离、无人机到障 碍物的距离及障碍物方差的势场函数,制定避障策略,从而解决无人机SLAM 的障碍规避问题,并在构建的无人机 运动模型基础上,对提出的算法进行仿真验证。仿真结果...
空间翻滚非合作目标相对位姿估计的视觉SLAM方法
相对位姿估计 同步定位与建图 贝叶斯滤波
2015/7/27
针对空间翻滚非合作目标相对位姿测量中目标先验信息缺失和模型不确定问题,将移动机器人视觉同步定位与建图(SLAM)贝叶斯滤波估计模型推广到非合作目标相对位姿测量中,提出一种基于视觉SLAM的翻滚非合作目标相对位姿估计方法。首先,构建了相对位姿估计的贝叶斯滤波状态转移模型和量测更新模型。其次,为避免平动噪声协方差过大导致滤波性能下降的问题,对状态转移方程进行优化,采用最小二乘估计方法预测位置参数。最后...