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光电信息大讲堂第210期：From discovery of random Raman lasing via natural Rayleigh scattering in ultra-long fibers to unique lasing and sensing features of multimode and multicore fibers with fs-inscribed regular and random 3D refractive-index structures
拉曼光纤激光器 输出光束 折射率光纤
2023/4/17
在二极管泵浦的拉曼光纤激光器的多模渐变折射率光纤中，通过飞秒脉冲刻写FBG，可产生接近衍射极限的输出光束。这一技术已经应用于工业（通信、生物医学、材料加工、基础设施和能源行业）中的各种激光和传感器系统。从超长光纤自然瑞利散射引起的随机拉曼激光的发现出发，主讲人将介绍使用fs脉冲刻写具有规则/随机的3D折射率结构的多模、多芯光纤的技术，以及新型光纤所具有的独特激光和传感性能，这种新型光纤有望在物理上...
AUTOMATED DETECTION AND LAYOUT REGULARIZATION OF SIMILAR FEATURES IN INDOOR POINT CLOUD
Layout regularization Pattern detection Point cloud analysis Indoor modeling
2019/3/4
Automated identification of high-level structures in unorganized point cloud of indoor spaces Indoor space is an important aspect of scene analysis that provides essential information for many applica...
QUALITY FEATURES FOR THE INTEGRATION OF TERRESTRIAL AND UAV IMAGES
photogrammetry data fusion terrestrial images UAV
2019/3/1
The paper presents an innovative approach for improving the orientation results when terrestrial and UAV images are jointly processed. With the existing approaches, the processing of images coming fro...
FEATURES OF GEODETIC MAINTENANCE FOR WATER SUPPLY PROJECTS IN AZERBAIJAN
Water supply Sewerage system GIS Programme support Geodetic monitoring Environment Plan-height positioning
2019/2/27
Drinking water supply and sewerage system designing and reconstruction projects are being extensively conducted in Azerbaijan Republic. During implementation of such projects, collecting large amount ...
IDENTIFICATION OF SIMILARITIES AND PREDICTION OF UNKNOWN FEATURES IN AN URBAN STREET NETWORK
urban traffic traffic analysis machine learning clustering
2018/11/9
Accurate predictions of the characteristics of urban streets in particular with respect to the typical traffic situations are crucial for numerous real world applications such as navigation, schedulin...
CHANGE DETECTION OF HIGH-RESOLUTION REMOTE SENSING IMAGES BASED ON ADAPTIVE FUSION OF MULTIPLE FEATURES
Change Detection Color Gistogram Linear Gradient Histogram EMD distance Histogram Curvature
2018/5/15
In view of the traditional change detection algorithm mainly depends on the spectral information image spot, failed to effectively mining and fusion of multi-image feature detection advantage, the art...
AUTOMATIC GLOBAL REGISTRATION BETWEEN AIRBORNE LIDAR DATA AND REMOTE SENSING IMAGE BASED ON STRAIGHT LINE FEATURES
Registration Automatic LiDAR Remote Sensing Straight Line Similarity Measure
2018/5/15
An automatic global registration approach for point clouds and remote sensing image based on straight line features is proposed which is insensitive to rotational and scale transformation. First, the ...
AUTOMATIC GENERALIZABILITY METHOD OF URBAN DRAINAGE PIPE NETWORK CONSIDERING MULTI-FEATURES
Stroke Urban Drainage Pipe Network Generalization Similarity Criterion Multi-features
2018/5/17
Urban drainage systems are indispensable dataset for storm-flooding simulation. Given data availability and current computing power, the structure and complexity of urban drainage systems require to b...
SUBTYPE COASTLINE DETERMINATION IN URBAN COAST BASED ON MULTISCALE FEATURES: A CASE STUDY IN TIANJIN, CHINA
Subtype Coastline Multiscale Feature Uncertainty Remote Sensing Tianjin
2018/5/15
In urban coast, coastline is a direct factor to reflect human activities. It is of crucial importance to the understanding of urban growth, resource development and ecological environment. Due to comp...
APPLICATION OF MLS DATA TO THE ASSESSMENT OF SAFETY-RELATED FEATURES IN THE SURROUNDING AREA OF AUTOMATICALLY DETECTED PEDESTRIAN CROSSINGS
Mobile Mapping System 3D Point Cloud Processing Road Marking Classification Accessibility Analysis
2018/6/5
During the last few years, there has been a huge methodological development regarding the automatic processing of 3D point cloud data acquired by both terrestrial and aerial mobile mapping systems, mo...
MULTI-SCALE SEGMENTATION OF HIGH RESOLUTION REMOTE SENSING IMAGES BY INTEGRATING MULTIPLE FEATURES
High resolution remote sensing images multi-scale segmentation canny edge detector texture feature Mumford Shah–standard Kruskal algorithm
2017/7/12
Most of multi-scale segmentation algorithms are not aiming at high resolution remote sensing images and have difficulty to communicate and use layers’ information. In view of them, we proposes a metho...
AN ENHANCED ALGORITHM FOR AUTOMATIC RADIOMETRIC HARMONIZATION OF HIGH-RESOLUTION OPTICAL SATELLITE IMAGERY USING PSEUDOINVARIANT FEATURES AND LINEAR REGRESSION
Radiometric Harmonization Pseudo-Invariant Features Sentinel-2 Remote Sensing Copernicus GIO HRL Forest
2017/7/12
The growing number of available optical remote sensing data providing large spatial and temporal coverage enables the coherent and gapless observation of the earth’s surface on the scale of whole coun...
ACCURATE AND FAST BUILDING DETECTION USING BINARY BAG-OF-FEATURES
Building Detection Simple Linear Iterative Clustering Binary Bag-Of-Features Machine Learning Local Feature Descriptor Classification
2017/7/13
This paper presents a non-interactive building detection approach employing binary bag-of-features (BBOF), namely, extracting building roof contours in remote sensing images automatically, rapidly and...
Combination of Features Produces New Android Vulnerability
Combination Features Produces Android Vulnerability
2017/7/20
A new vulnerability affecting Android mobile devices results not from a traditional bug, but from the malicious combination of two legitimate permissions that power desirable and commonly-used feature...
MAIN FEATURES OF A 3D GIS FOR A MONUMENTAL COMPLEX WITH AN HISTORICAL-CULTURAL RELEVANCE
3D model 3D GIS Cultural Heritage BIM technologies
2017/6/20
The last achievements of technologies in geomatics especially in survey and restitution of 3D models (UAV/drones and laser scanner technologies) generated new procedures and higher standards of qualit...