搜索结果: 1-15 共查到“摄影测量与遥感技术 shadow”相关记录19条 . 查询时间(0.049 秒)
BUILDING SHADOW DETECTION FROM GHOST IMAGERY
Ghost image Interior and exterior orientation elements Zenith angle of sun Region growing method Urban large-scale aerial imagines
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2018/5/17
Shadow is one of the basic features of remote sensing image, it expresses a lot of information of the object which is loss or interference, and the removal of shadow is always a difficult problem to r...
ANALYZING SPECTRAL CHARACTERISTICS OF SHADOW AREA FROM ADS-40 HIGH RADIOMETRIC RESOLUTION AERIAL IMAGES
Shadow shadow spectra ADS-40 high radiometric resolution
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2016/11/23
The shadows in optical remote sensing images are regarded as image nuisances in numerous applications. The classification and interpretation of shadow area in a remote sensing image are a challenge, b...
CLOUD AND CLOUD SHADOW MASKING USING MULTI-TEMPORAL CLOUD MASKING ALGORITHM IN TROPICAL ENVIRONMENTAL
Multitemporal Cloud Masking Algrithm Cloud Cloud Shadow
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2016/7/8
A cloud masking approach based on multi-temporal satellite images is proposed. The basic idea of this approach is to detect cloud and cloud shadow by using the difference reflectance values between cl...
ANISOTROPIC SCATTERING SHADOW COMPENSATION METHOD FOR REMOTE SENSING IMAGE WITH CONSIDERATION OF TERRAIN
Soft Shadow Shadow Compensation Anisotropy Diffuse Solar Radiation Sky View Factor
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2016/7/4
With the rapid development of sensor networks and earth observation technology, a large quantity of high resolution remote sensing data is available. However, the influence of shadow has become increa...
WAVELET ENHANCEMENT OF CLOUD-RELATED SHADOW AREAS IN SINGLE LANDSAT SATELLITE IMAGERY
Wavelet image fusion shadow frequency decomposition Landsat
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2015/12/31
Cloud-related shadows represent areas with low illumination conditions that affect remote sensing image quality. In this research, a wavelet-based image sharpening algorithm was developed to enhance s...
Shadow Detection of Urban Aerial Images Based on Partial Differential Equations
Shadow Detection Urban Aerial Image Partial Differential Equations Image Understanding Feature Detection
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2015/12/2
Shadow detection plays an important role in digital aerial image processing. In this paper, shadow is treated as a special kind of image degradation. Shadow region commonly has lower brightness than n...
QUANTITATIVE ANALYSIS OF SHADOW EFFECTS IN HIGH-RESOLUTION IMAGES OF URBAN AREAS
Shadow Object Extraction High resolution Classification Land Cover LIDAR
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2015/8/3
Shadow effects have drawn much attention by researchers with increasing use of high-resolution remote sensing images of urban areas. For correction or compensation to pixels that falling in shadow are...
AUTOMATIC EXTRACTION OF SHADOW REGIONS IN HIGH-RESOLUTION ADS40 IMAGES - By Robust Approach of Feature Spaces Analysis
Vision Urban detection extraction
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2015/6/2
Due to high object density and high proportion of shadow-covered areas, it is usually quite difficult to extract information in urban
high-resolution airborne images from Leica Geosystems' airborne ...
A SYSTEM OF THE SHADOW DETECTION AND SHADOW REMOVAL FOR HIGH RESOLUTION CITY AERIAL PHOTO
Aerial OrthoImage High resolution Surface
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2015/6/2
This paper presents a methodology to automatically detect and remove the shadows in high-resolution urban aerial images for urban
GIS applications. The system includes cast shadow computation, image...
RESTITUTION OF INFORMATION UNDER SHADOW IN REMOTE SENSING HIGH SPACE RESOLUTION IMAGES: APPLICATION TO IKONOS DATA OF SHERBROOKE CITY
Restitution Spatial High Resolution
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2015/6/1
hadow regions are very present in the high spatial resolution images, particularly in urban environment. Shades have negative effects.
They strongly disturb the classical techniques of image analysi...
SHADOW DETECTION FROM VERY HIGH RESOLUTON SATELLITE IMAGE USING GRABCUT SEGMENTATION AND RATIO-BAND ALGORITHMS
VHR Satellite Imagery Shadow Detection Shadow Context Image Segmentation Grab Cut partitioning Urban Area WorldView-3
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2015/4/1
Very-High-Resolution (VHR) satellite imagery is a powerful source of data for detecting and extracting information about urban constructions. Shadow in the VHR satellite imageries provides vital infor...
Shadow Analysis Technique for Extraction of Building Height using High Resolution Satellite Single Image and Accuracy Assessment P
High Resolution Satellite Data Automatic Extraction Shadow Analysis
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2014/12/16
These High resolution satellite data with metadata information is used to extract the height of the building using shadow. Proposed approach divides into two phases 1) rooftop and shadow extraction an...
Reducing false alarm rates during change detection by modeling relief, shade and shadow of multi-temporal imagery.
Change detection Orthorectification Rendering Radiometry Geometry
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2014/7/23
Change detection on the basis of multi-temporal imagery may lead to false alarms when the image has changed, whereas the scene has not. Geometric image differerences in an unchanged scene may be due t...
EXPLOITING SHADOW EVIDENCE AND ITERATIVE GRAPH-CUTS FOR EFFICIENT DETECTION OF BUILDINGS IN COMPLEX ENVIRONMENTS
Building Detection Shadow Evidence Iterative Graph-cuts Fuzzy Landscapes Optical Imagery
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2014/4/24
This paper presents an automated approach for efficient detection of building regions in complex environments. We investigate the shadow evidence to focus on building regions, and the shadow areas are...
FAST OCCLUSION AND SHADOW DETECTION FOR HIGH RESOLUTION REMOTE SENSING IMAGE COMBINED WITH LIDAR POINT CLOUD
Fast Occlusion Shadow High Resolution Remote Sensing LiDAR
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2014/4/29
The orthophoto is an important component of GIS database and has been applied in many fields. But occlusion and shadow causes the loss of feature information which has a great effect on the quality of...