Variogram maps from LiDAR data as fingerprints of surface morphology on scree slopes
نویسندگان
چکیده
منابع مشابه
Scree Representation on Topographic Maps
Scree patterns are an important element of mountain maps in Swiss style. The size and density of scree dots vary with the exposition towards a source of illumination, which makes the dots extremely labour intensive to map without specialized algorithms. This paper identifies design principles for the symbolisation of scree fields on mountain slopes and presents a digital method for the quick pl...
متن کاملAutomatic Scree Representation for Topographic Maps
Scree – a mass of small stones covering a slope on a mountain – is extremely labour-intensive to reproduce on topographic maps when each stone is drawn separately. Th is is due to the large number of stones – typically several hundreds of stones per square centimetre in a scree fi eld. An automatic procedure to produce scree representations would therefore greatly simplify and accelerate the pr...
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The advent of Light Detection and Ranging (LIDAR) technique provides a promising resource for three-dimensional building detection. Most current methods commonly fuse LIDAR data with other multi-spectral images to help remove vegetation based on NDVI or other vegetation indices; however, the fusing process may cause errors that are introduced by resolution differences, geo-referencing, time dif...
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توابع درهم نقش بسیار مهم در سیستم های رمزنگاری و پروتکل های امنیتی دارند. در سیستم های رمزنگاری برای دستیابی به احراز درستی و اصالت داده دو روش مورد استفاده قرار می گیرند که عبارتند از توابع رمزنگاری کلیددار و توابع درهم ساز. توابع درهم ساز، توابعی هستند که هر متن با طول دلخواه را به دنباله ای با طول ثابت تبدیل می کنند. از جمله پرکاربردترین و معروف ترین توابع درهم می توان توابع درهم ساز md4, md...
Analyzing Glacier Surface Motion Using LiDAR Data
Understanding glacier motion is key to understanding how glaciers are growing, shrinking, and responding to changing environmental conditions. In situ observations are often difficult to collect and offer an analysis of glacier surface motion only at a few discrete points. Using light detection and ranging (LiDAR) data collected from surveys over six glaciers in Greenland and Antarctica, partic...
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ژورنال
عنوان ژورنال: Natural Hazards and Earth System Sciences
سال: 2009
ISSN: 1684-9981
DOI: 10.5194/nhess-9-129-2009