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FOCUSING ON OUT-OF-FOCUS: ASSESSING DEFOCUS ESTIMATION ALGORITHMS FOR THE BENEFIT OF AUTOMATED IMAGE MASKING
Automated masking Defocus estimation Depth of field Edge extraction Image-based modelling Out-of-focus blur
2018/6/5
Acquiring photographs as input for an image-based modelling pipeline is less trivial than often assumed. Photographs should be correctly exposed, cover the subject sufficiently from all possible angle...
THE PARALLEL IMPLEMENTATION OF ALGORITHMS FOR FINDING THE REFLECTION SYMMETRY OF THE BINARY IMAGES
Reflection Symmetry of Images Binary Images High-Performance Computing Parallel Performance Evaluation
2017/6/19
In this paper, we investigate the exact method of searching an axis of binary image symmetry, based on brute-force search among all potential symmetry axes. As a measure of symmetry, we use the set-th...
FROM TLS POINT CLOUDS TO 3D MODELS OF TREES: A COMPARISON OF EXISTING ALGORITHMS FOR 3D TREE RECONSTRUCTION
Trees Terrestrial Laser Scanner Point Cloud 3D Model Reconstruction Algorithm Assessment Accuracy
2017/4/5
3D models of tree geometry are important for numerous studies, such as for urban planning or agricultural studies. In climatology, tree models can be necessary for simulating the cooling effect of tre...
GEOLOGICAL MAPPING USING MACHINE LEARNING ALGORITHMS
Geology Geological Mapping MLA Random Forest Spectral Imagery Rocks
2016/11/30
Remotely sensed spectral imagery, geophysical (magnetic and gravity), and geodetic (elevation) data are useful in a variety of Earth science applications such as environmental monitoring and mineral e...
THE EFFECT OF PANSHARPENING ALGORITHMS ON THE RESULTING ORTHOIMAGERY
Orthoimage Pansharpening Digital Surface Model (DSM) Accuracy Pleiades-1B
2016/11/23
This paper evaluates the geometric effects of pansharpening algorithms on automatically generated DSMs and thus on the resulting orthoimagery through a quantitative assessment of the accuracy on the e...
ALGORITHMS FOR RELATIVE RADIOMETRIC CORRECTION IN EARTH OBSERVING SYSTEMS “RESOURCE-P” AND “CANOPUS-V”
Pushbroom And Matrix Imagery Instruments Relative Radiometric Correction Reference Calibration Images
2016/11/15
The present paper has considered two algorithms of the relative radiometric correction of information obtained from a multimatrix imagery instrument of the spacecraft “Resource-P” and frame imagery sy...
VALIDATION OF POINT CLOUDS SEGMENTATION ALGORITHMS THROUGH THEIR APPLICATION TO SEVERAL CASE STUDIES FOR INDOOR BUILDING MODELLING
3D modelling laser scanning indoor point clouds space segmentation building elements datasets
2016/11/11
Laser scanners are widely used for the modelling of existing buildings and particularly in the creation process of as-built BIM (Building Information Modelling). However, the generation of as-built BI...
COMPARISON OF OPEN SOURCE COMPRESSION ALGORITHMS ON VHR REMOTE SENSING IMAGES FOR EFFICIENT STORAGE HIERARCHY
Lossless Data Compression LZMA LZO BWT PPMd GeoTIFF VHR SPOT open source
2016/11/8
High resolution level in satellite imagery came with its fundamental problem as big amount of telemetry data which is to be stored after the downlink operation. Moreover, later the post-processing and...
THE USE OF COMPUTER VISION ALGORITHMS FOR AUTOMATIC ORIENTATION OF TERRESTRIAL LASER SCANNING DATA
Feature Extraction Scan Registration Computer Vision analysis of image matching algorithms TLS
2016/7/27
The paper presents analysis of the orientation of terrestrial laser scanning (TLS) data. In the proposed data processing methodology, point clouds are considered as panoramic images enriched by the de...
DO THE VISUAL COMPLEXITY ALGORITHMS MATCH THE GENERALIZATION PROCESS IN GEOGRAPHICAL DISPLAYS?
Visual complexity feature congestion subband entropy
2016/7/8
In this study, we first develop a hypothesis that existing quantitative visual complexity measures will overall reflect the level of cartographic generalization, and test this hypothesis. Specifically...
PERFORMANCE EVALUATION OF DIFFERENT GROUND FILTERING ALGORITHMS FOR UAV-BASED POINT CLOUDS
Point Cloud Ground Filtering Unmanned Aerial Vehicle Aerial Photo Digital Elevation Model Adaptive TIN
2016/7/4
Digital Elevation Model (DEM) generation is one of the leading application areas in geomatics. Since a DEM represents the bare earth surface, the very first step of generating a DEM is to separate the...
Integrated use of spatial data and learning algorithms to detect water quality trends
Integrated spatial data learning algorithms detect water quality trends
2016/5/20
This paper presents the first results of a study which investigates river basin water quality management based on the ability of GIS to integrate different data sources into a common geographical data...
Cooperative algorithms and techniques of image analysis and GIS
Integration Fusion Revision Update Image Analysis Interpretation
2016/5/20
During the past data fusion has become an important issue in remote sensing image analysis. Image analysts benefit very much from fusion products, e.g. merged optical and radar imagery, which provide ...
VISION TEACHLETS–WEB-BASED VISUALISATION OF ALGORITHMS IN PHOTOGRAMMETRY AND IMAGE ANALYSIS
Vision Teachlets Visualisation Interaction Photogrammetric algorithms Image analysis Flash Java
2016/1/29
The paper describes concepts and the realisation of vision teachlets for an interactive visualisation of algorithms in the field of photogrammetry and image analysis. A series of web-based teachlets i...
A REVIEW OF MULTI-TEMPORAL REMOTE SENSING DATA CHANGE DETECTION ALGORITHMS
Remote Sensing Change Detection Classification Framework Accuracy Assessment
2015/12/31
Change information of the earth's surface is becoming more and more important in monitoring the local, regional and global resources and environment. The large collection of past and present remote se...