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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...
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...
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...
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...
EFFECTIVENESS OF BOOSTING ALGORITHMS IN FOREST FIRE CLASSIFICATION
Forest fire SPOT 4 Adaboost Logitboost Multilayer Perseptron Regression Tree
2015/12/31
In this paper, it is aimed to investigate the capabilities of boosting classification approach for forest fire detection using SPOT-4 imagery. The study area, Bodrum in the province of Muğla, isl...
PERFORMANCE EVALUATION FOR SCENE MATCHING ALGORITHMS BY SVM
Scene matching Classification Support vector machine Performance evaluation Measure descriptor Training
2015/12/31
Scene matching is the process of locating a region of an image with the corresponding region of another image where both image regions represent the same scene. Although a lot of algorithms have appea...
A COMPARATIVE STUDY OF THREE ALGORITHMS FOR FOREST FIRE DETECTION IN IRAN
Multi-Spectral Remote Sensing Detection Image Understanding Comparative Analysis Forest Fire
2015/12/28
Fire as a natural disaster plays a major role in deforestation; is a major source of trace gases, aerosols and carbon fluxes. Approximately 7 percent of Iran area is covered by forests/and wooded land...
USING SMOS PASSIVE MICROWAVE DATA TO DEVELOP SMAP FREEZE/THAW ALGORITHMS ADAPTED FOR THE CANADIAN SUBARCTIC
Passive Microwave Freeze-Thaw Frozen Soil SMOS Remote Sensing
2016/1/15
Seasonal terrestrial Freeze/Thaw cycle in Northern Quebec Tundra (Nunavik) was determined and evaluated with passive microwave observations. SMOS time series data were analyzed to examine seasonal var...