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AUTOMATIC EXTRACTION OF ROAD MARKINGS FROM MOBILE LASER-POINT CLOUD USING INTENSITY DATA
Laser Scanning Road Marking Point Cloud High Precision Map Adaptive Threshold Segmentation
2018/5/16
With the development of intelligent transportation, road’s high precision information data has been widely applied in many fields. This paper proposes a concise and practical way to extract road marki...
INFORMATION EXTRACTION IN TOMB PIT USING HYPERSPECTRAL DATA
Hyperspectral data Principal component analysis Historical remains Band math Density slice Morphology
2018/5/16
Hyperspectral data has characteristics of multiple bands and continuous, large amount of data, redundancy, and non-destructive. These characteristics make it possible to use hyperspectral data to stud...
SEMANTIC SEGMENTATION OF CONVOLUTIONAL NEURAL NETWORK FOR SUPERVISED CLASSIFICATION OF MULTISPECTRAL REMOTE SENSING
Semantic Segmentation Multi Spectral Remote Sensing Convolutional Neural Network U-net multi-scale image
2018/5/16
Semantic segmentation is a fundamental research in remote sensing image processing. Because of the complex maritime environment, the classification of roads, vegetation, buildings and water from remot...
SHARPENDING OF THE VNIR AND SWIR BANDS OF THE WIDE BAND SPECTRAL IMAGER ONBOARD TIANGONG-II IMAGERY USING THE SELECTED BANDS
Sharpening band selection Tiangong-II VNIR and SWIR bands Wide band spectral imager
2018/5/15
The Tiangong-II space lab was launched at the Jiuquan Satellite Launch Center of China on September 15, 2016. The Wide Band Spectral Imager (WBSI) onboard the Tiangong-II has 14 visible and near-infra...
3D RECONSTRUCTION FROM UAV-BASED HYPERSPECTRAL IMAGES
Cubert UHD185 Hyperspectral images Structure from motion 3D reconstruction Database
2018/5/15
Reconstructing the 3D profile from a set of UAV-based images can obtain hyperspectral information, as well as the 3D coordinate of any point on the profile. Our images are captured from the Cubert UHD...
3D RECONSTRUCTION-REVERSE ENGINEERING – DIGITAL FABRICATION OF THE EGYPTIAN PALERMO STONE USING BY SMARTPHONE AND LIGHT STRUCTURED SCANNER
Cultural Heritage Structured Light Scanning Smartphone 3D modeling 3D sculpting Digital Fabrication
2018/6/4
This paper presents a pipeline that has been developed to acquire a shape with particular features both under the geometric and radiometric aspects. In fact, the challenge was to build a 3D model of t...
SPECTRAL AND 3D CULTURAL HERITAGE DOCUMENTATION USING A MODIFIED CAMERA
Spectral imaging image-based 3D reconstruction cultural heritage camera characterisation image quality
2018/6/5
Spectral and 3D imaging techniques are used for museum imaging and cultural heritage documentation providing complementary information to aid in documenting the condition, informing the care, and incr...
MASSIVE LINKING OF PS-INSAR DEFORMATIONS TO A NATIONAL AIRBORNE LASER POINT CLOUD
Airborne Laser Scanning PS-InSAR geolocation deformation monitoring local surface reconstruction data fusion
2018/6/5
Build on soft soil, close to sea level the Netherlands is at high risk for the effects of subsidence and deformation. Interferometric Synthetic Aperture Radar (InSAR) is successfully used to monitor t...
塔克拉玛干沙漠腹地沙粒胶结体的粒度特征
沙粒胶结体 粒度参数 形成环境
2018/4/18
对塔克拉玛干沙漠腹地沙粒胶结体进行溶蚀分散获取组成沙粒，采用激光粒度仪分析粒度成分，并与区域内沙丘沙、垄间平地沙和风沙流输沙的粒度特征进行对比，分析沙粒胶结体的粒度特征。结果表明：（1）沙粒胶结体中沙粒粒径呈多峰态分布，垄间平地沙呈双峰态分布，而沙丘沙和风沙流输沙呈单峰态分布；（2）沙粒胶结体内沙粒分选性较差，偏度属正偏，平均粒径（3.17 Φ）介于沙丘沙（3.10 Φ）和垄间地沙（3.28 Φ）...
飞秒激光诱导硅表面高频周期结构
双温方程 高频周期性结构 德鲁德模型 二次谐波
2018/3/7
通过引入双温方程电子数密度模型，德鲁德模型和波纹间隔理论Λ=λ/2ñ，得到高频波纹周期具有波长依赖性的特点，分析了在辐射光通量接近损伤阈值时，高频周期波纹在一定范围内接近λ/6~λ/4，且随入射激光通量近似成正比。同时基于时域有限差分法（FDTD）的方法对飞秒激光辐照硅表面电场分布进行数值仿真，在初始脉冲形成近波长波纹的情况下，硅表面的电场再分布使得激光能量大多沉积在凹槽边缘，产生高频周...
为了获得性能优良的医学植入体，需对热处理后的激光选区熔化（SLM）成型零件的性能进行研究。应用拉伸试验机和冲击试验机分别对成型件进行拉伸和冲击实验；显微硬度计测试CoCrMo合金在不同条件下的硬度差别；通过金相显微镜和扫描电子显微镜（SEM）对其表面形貌进行观察，研究其断裂机理。结果表明：未处理的SLM成型件具有较高的抗拉强度，1 200℃退火炉冷条件下具有较高的延伸率；硬度随热处理温度的升高逐渐...
POSSIBILITIES OF THE JOINT USE OF OPTICAL AND RADAR DATA IN FLOOD SPACE MONITORING
Remote Sensing Space Monitoring High Waters Flood Radar Data Radar Polarimetry
2018/5/8
The article gives a brief description of the system of space monitoring of high water and floods. Its main tasks are the operational dynamics of snow and ice cover melting and the passage of flood wat...
为了研究可见/近红外光谱法估算渭北旱塬区黄绵土钾含量的可行性，以陕西省乾县试验田采集的120个土壤样品为研究对象，在室内进行土壤全钾、速效钾含量及反射光谱数据测量的基础上，应用多元线性回归（MLR）和偏最小二乘回归（PLSR）方法建立土壤钾含量的估算模型，并用独立样本进行验证。结果表明，以土壤光谱反射率一阶微分（DSSR）为自变量建立的多元线性回归模型（MLR）能进行土壤全钾含量准确估算。以波段深...
干旱区典型绿洲土壤有机质的反演及影响因素研究
高光谱 Landsat 8 OLI 土壤有机质 影响因素
2018/4/28
为了大面积、高精度地反演土壤有机质含量，为农业可持续发展提供数据支撑。以新疆渭干河-库车河三角洲绿洲为研究区，采用波段平均法将实测高光谱窄波段拟合为Landsat 8 OLI遥感影像的宽波段，建立土壤有机质含量的估算模型，并将最优估算模型应用到经过波段校正的Landsat 8 OLI遥感影像中。结果表明：（1）反射率进行倒数、对数、平方、一阶微分等数学变换后与有机质含量的相关性显著提高；（2）土壤...
提出基于空时块码（STBC）调制的自适应多输入多输出正交频分复用（MIMO-OFDM）可见光通信（VLC）系统，该系统能够克服MIMO信道相关性并实现可靠通信。同时，引入功率比特分配（PBA）与OFDM相结合，以适应信道传输条件从而有效提高频谱效率。通过搭建一个2×2的MIMOOFDM VLC演示系统，实现了80 cm距离的传输，实验中测得的误码率始终保持在7%的前向纠错阈值3.8×10-3之下。...