• Français
    • English
  • Français 
    • Français
    • English
  • Login
View Document 
  •   Savoirs UdeS Home
  • Lettres et sciences humaines
  • Lettres et sciences humaines – Mémoires
  • View Document
  •   Savoirs UdeS Home
  • Lettres et sciences humaines
  • Lettres et sciences humaines – Mémoires
  • View Document
JavaScript is disabled for your browser. Some features of this site may not work without it.

Browse

All of Savoirs UdeSDomains & CollectionsBy Issue DateAuthorsTitlesSubjectsDirectorsThis CollectionBy Issue DateAuthorsTitlesSubjectsDirectors

My Account

Login

Statistics

View Usage Statistics

Comparaison de plusieurs méthodes de télédétection multibande et hyperspectrale pour la détermination du taux de recouvrement des résidus de cultures agricoles

Thumbnail
View/Open
Document principal (4.440Mb)
Publication date
2002
Author(s)
Arsenault, Éric
Show full document record
Abstract
The vegetation cover fraction of agricultural soils is often used as input into erosion or hydrological models at the watershed scale. Many methods exist for quantifying green vegetation and most of them are based on vegetation indices that take advantage of the spectral contrast between the red and near infrared, that is typically present in chlorophyll producing plants. However, the detection and quantification of non-living vegetation, such as crop residues that are efficient in reducing erosion and runoff on agricultural soils, is often problematic because of its optical properties that make this type of vegetation difficult to discriminate from bare soil. A few methods were however developed but there is some ambiguity as to the validity of their results. The objective of this research is mainly oriented towards evaluating existing techniques for crop residue detection in order to find the most suitable one for accurate mapping of the residue cover fraction. The techniques evaluated include the Soil Adjusted Corn Residue Index (SACRI), the Corn Residue Index Multiband (CRIM), the Normalized Differential Index (NDI) and the spectral unmixing technique."--Résumé abrégé par UMI
URI
http://savoirs.usherbrooke.ca/handle/11143/2228
Collection
  • Lettres et sciences humaines – Mémoires [2410]

DSpace software [version 5.4 XMLUI], copyright © 2002-2015  DuraSpace
Contact Us | Send Feedback
 

 


DSpace software [version 5.4 XMLUI], copyright © 2002-2015  DuraSpace
Contact Us | Send Feedback