نتایج جستجو برای: classification of roads

تعداد نتایج: 21188786  

1999
Véronique Prinet Songde Ma Olivier Monga

Classification is one of the major issue in image analysis and processing for remote sensing applications. Though classification based on texture analysis —landuse, forests, cities, etc— is the purpose of numerous works, classification of curvilinear networks is hardly processed. However, it is of major interest, in particular for image indexing and images matching, because it is a main feature...

Journal: :ecopersia 0
seyed ata ollah hosseini associate professor of forestry and forest economics, university of tehran, tehran, iran. masoud esmaeili sharif isfahan research center for agriculture and natural resources, isfahan, iran mohammad amoozad forest, range and watershed administration, sari district, sari, iran korosh shirani associate professor at isfahan research center for agriculture and natural resources, isfahan, iran mohsen gorgandipour m.sc. student of forest engineering, faculty of natural resources, university of tehran, tehran, iran

the effect of forest roads on the extent and type of fire damage occurred in forests and rangelands of the neka county in mazandaran province was investigated. for this purpose, all fire spots, stand number, percentage and type of injury and damage to tree species, and average diameter at breast height (dbh) were noted with 100% inventory; area and geographic location of access roads were deter...

2005
Uwe Bacher

In this paper we propose an approach for automatic road extraction from high resolution multispectral imagery, such as IKONOS or Quickbird, in rural areas. While aerial imagery usually consists of 3 spectral bands, high resolution satellite data comprises 4 spectral bands with a better radiometric quality compared to film, but a worse geometric resolution. Therefore, strongly making use of the ...

2012
F. Samadzadegan B. Bigdeli M. Hahn

LIDAR is a powerful remote sensing technology for acquisition of 3D information from terrain surface. Algorithms used for LIDAR data in urban area are used mostly to deal with the 3D points cloud and to identify objects, such as buildings, trees and roads. In contrast to the well studied problem of building and tree detection from LIDAR data, the detection of roads from LIDAR is in its formativ...

2016
Hsiang Ling Chen John L. Koprowski Francisco Moreira

Anthropogenic infrastructure such as roads and non-native species are major causes of species endangerment. Understanding animal behavioral responses to roads and traffic provides insight into causes and mechanisms of effects of linear development on wildlife and aids effective mitigation and conservation. We investigated effects of roads and traffic on space use and movements of two forest-dwe...

سعید پورمنافی, , سید جمال‌الدین خواجه‌الدین, ,

To detect the rice paddis areas in Isfahan region, the IRS-1D data from PAN, LISS III and WiFS time series were used. Geometric, atmospheric, radiometric and topographic corrections were applied to various images from 2003 to 2004. Necessary preprocessing and various analyses as well as time series composite image analyses were applied and field sampling was done for appropriate times in 2003 a...

2009
Julie Bouchard Adam T. Ford Felix E. Eigenbrod Lenore Fahrig

A key goal in road ecology is to determine which species are most vulnerable to the negative effects of roads on population persistence. Theory suggests that species that avoid roads are less likely to be negatively affected by roads than those that do not avoid roads. The goal of this study was to take a step toward testing this prediction by evaluating the behavioral response to roads and tra...

Journal: :Acta Scientific Agriculture 2019

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