نتایج جستجو برای: aerial photos
تعداد نتایج: 37790 فیلتر نتایج به سال:
One of the quickest and most efficient methods to study urbanism conditions and determine critical conditions of regions and rate of losses after earthquake is the use of aerial photos. The critical conditions are more severe in cities and mountainous regions due to the steep slope of traffic routes, snow and frosting, and use of aggregates. Using satellite images and GIS maps different regions...
This paper describes an approach to classification of noisy signals using a technique based on the fuzzy ARTMAP neural network (FAMNN). The proposed method is a modification of the testing phase of the fuzzy ARTMAP that exhibits superior generalization performance compared to the generalization performance of the standard fuzzy ARTMAP in the presence of noise. An application to textured gray-sc...
A relevant issue in Remote Sensing (RS) and GIS is related to the analysis and the characterization of Land Use Land Cover (LULC) changes, very useful for a wide range of environmental applications and to efficiently undertake landscape planning and management policies. The methodology described has been applied to a case-study conducted in the area of the Province of Avellino (Southern Italy)....
Missouri ranks second in cow-calf numbers in the United States and its pastureland has experienced invasion of various plant species. As one of the invasive weeds, sericea lespedeza is becoming a serious threat to pasturelands in this state. The in-situ field survey in these vast pastures is time consuming and often impossible because of accessibility. Typical aerial survey is also difficult to...
Abstract Plant growth and biomass assessments are required in production and research. Such assessments are followed by major decisions (e.g., harvest timing) that channel resources and influence outcomes. In research, resources required to assess crop status affect other aspects of experimentation and, therefore, discovery. Destructive harvests are important because they influence treatment s...
In the data acquisition and processing of Unmanned Aerial Vehicle(UAV) oblique photography monomer modeling, it is hard to balance model quality production efficiency. This research applied Analytic Hierarchy Process (AHP) evaluation method in field systems engineering management decision UAV modeling. Firstly, AHP constructed by expert survey method, relative weights 6 indicators first hierarc...
Galveston Island is a fragile environment beset by a number of related problems. The impacts of storms and hurricanes are widely publicized; less well known are the cumulative effects of recreation, beachfront construction and long-term coastal erosion. A year-long study of Galveston Island, using color infrared aerial pho tography taken at three-month intervals, gave significant insight into t...
America’s 95,000 miles of coastline are subject to natural and man-made processes that continually alter its shape and character. The accuracy, consistency, and currency of our national shoreline need to be frequently ensured, especially during this era of rapid coastal development. Countless applications depend on NOAA’s National Spatial Reference System to determine where the land meets the s...
This paper evaluates accuracies of selected image classification strategies, as applied to Landsat imagery to assess urban impervious surfaces by comparing them to reference data manually delineated from high-resolution aerial photos. Our goal is to identify the most effective methods for delineating urban impervious surfaces using Landsat imagery, thereby guiding applications for selecting cos...
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