搜索结果: 1-6 共查到“地图制图技术 Shadow”相关记录6条 . 查询时间(0.078 秒)
Research on the Building Shadow Extraction and Elimination Method
Building Shadow Extraction Shadow Removal Multiple Constraints Edge Detection
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2015/12/9
This paper first generalizes the significance and present research situation of the building shadow extraction and elimination method. Then, an approach of automatic extracting shadows of building fro...
Rendering 3D Vector Data Using the Theory of Stencil Shadow Volume
Stencil Buffer Shadow Volume Vector Data Real-time Visualization Terrain Rendering
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2015/12/2
In geographical information systems vector data has important applications in the analysis and management of virtual landscapes. Therefore, methods that allow combined visualization of terrain and geo...
AUTOMATED PRODUCTION OF CLOUD-FREE AND CLOUD SHADOW-FREE IMAGE MOSAICS FROM CLOUDY SATELLITE IMAGERY
Mosaic Feature Detection Algorithms
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2015/6/2
The humid tropical region is always under partial or complete cloud covers. As a result, optical remote sensing images of this region
always encounter the problem of cloud covers and associated shad...
SHADOW DETECTION IMPROVEMENT USING SPECTRAL INDICES AND MORPHOLOGICAL OPERATORS IN URBAN AREAS IN HIGH RESOLUTION IMAGES
Shadow detection high resolution
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2015/5/6
While high-resolution remote sensing images have increased application possibilities for urban studies, the large number of shadow areas has created challenges to processing and extracting informati...
THE STUDY ON HEIGHT INFORMATION EXTRACTION OF CULTURAL FEATURES IN REMOTE SENSING IMAGES BASED ON SHADOW AREAS
Cultural Features Photogrammetry Regional Segmentation Shadow Area Sun Altitude Angle
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2014/6/5
Cultural feature is important element in geospatial information library and the height information is important information of cultural features. The existences of the height information and its preci...
AUTOMATIC DETECTION OF SHADOW POINTS IN DIGITAL IMAGES FOR AUTOMATIC TRIANGULATION
digital extraction image photogrammetry
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2015/6/1
This paper presents a novel method for automatic detection of shadow points in digital images in order to improve the reliability of
automatic triangulation. The new method is based on the model of ...