A PHP Error was encountered

Severity: Notice

Message: Undefined offset: 0

Filename: controllers/Home.php

Line Number: 2237

Backtrace:

File: /home/siftdesk.org/public_html/application/controllers/Home.php
Line: 2237
Function: _error_handler

File: /home/siftdesk.org/public_html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Trying to get property 'issn' of non-object

Filename: controllers/Home.php

Line Number: 2237

Backtrace:

File: /home/siftdesk.org/public_html/application/controllers/Home.php
Line: 2237
Function: _error_handler

File: /home/siftdesk.org/public_html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Undefined offset: 0

Filename: controllers/Home.php

Line Number: 2238

Backtrace:

File: /home/siftdesk.org/public_html/application/controllers/Home.php
Line: 2238
Function: _error_handler

File: /home/siftdesk.org/public_html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Trying to get property 'impact' of non-object

Filename: controllers/Home.php

Line Number: 2238

Backtrace:

File: /home/siftdesk.org/public_html/application/controllers/Home.php
Line: 2238
Function: _error_handler

File: /home/siftdesk.org/public_html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Undefined index: articledata

Filename: controllers/Home.php

Line Number: 2239

Backtrace:

File: /home/siftdesk.org/public_html/application/controllers/Home.php
Line: 2239
Function: _error_handler

File: /home/siftdesk.org/public_html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Trying to get property 'indexed_title' of non-object

Filename: controllers/Home.php

Line Number: 2239

Backtrace:

File: /home/siftdesk.org/public_html/application/controllers/Home.php
Line: 2239
Function: _error_handler

File: /home/siftdesk.org/public_html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Undefined offset: 0

Filename: controllers/Home.php

Line Number: 2240

Backtrace:

File: /home/siftdesk.org/public_html/application/controllers/Home.php
Line: 2240
Function: _error_handler

File: /home/siftdesk.org/public_html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /home/siftdesk.org/public_html/system/core/Exceptions.php:271)

Filename: common/jhead.php

Line Number: 12

Backtrace:

File: /home/siftdesk.org/public_html/application/views/common/jhead.php
Line: 12
Function: header

File: /home/siftdesk.org/public_html/application/views/topic-article.php
Line: 3
Function: view

File: /home/siftdesk.org/public_html/application/controllers/Home.php
Line: 2241
Function: view

File: /home/siftdesk.org/public_html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /home/siftdesk.org/public_html/system/core/Exceptions.php:271)

Filename: common/jhead.php

Line Number: 13

Backtrace:

File: /home/siftdesk.org/public_html/application/views/common/jhead.php
Line: 13
Function: header

File: /home/siftdesk.org/public_html/application/views/topic-article.php
Line: 3
Function: view

File: /home/siftdesk.org/public_html/application/controllers/Home.php
Line: 2241
Function: view

File: /home/siftdesk.org/public_html/index.php
Line: 316
Function: require_once

Sift Desk

Hierarchical Classification and Knowledge-Based Decision Tree for Land Use/Land Cover Classification with Very High Resolution Imagery

Authors

  • Nichols C.

Abstract

Very high resolution aerial imagery, while providing a very high level of detail of the land surface, introduced new challenges for land use / land cover (LULC) classification. Finer spatial resolution increases the spectral heterogeneity of the land cover features being classified, and markedly increases the number of shadow pixels. The result is a very large proportion of confused pixels sprinkled throughout the image which adversely affects the accuracy of LULC classification. This paper describes a hierarchical classification approach using knowledge-based decision tree for LULC classification (coniferous, deciduous, bare ground, water, and roads) with a very-high resolution (30cm) multispectral imagery. Shadowed or confused pixels were identified and underwent separate processes to effectively reassign those pixels to the base LULC classes, which was determined by the knowledge-based decision tree in this order: roads, water, coniferous, bare ground, and deciduous based on uniqueness of their spectral reflectance and whether they can be clearly separated from other classes. The overall classification accuracy is 89.4% with a Kappa of 0.85.

Author Biography

Nichols C.

Department of Humanities and Social Science, Northwest Missouri State University, 800 University Drive, Maryville, Missouri, USA

A PHP Error was encountered

Severity: Notice

Message: Trying to get property 'jtitle' of non-object

Filename: controllers/Home.php

Line Number: 2240

Backtrace:

File: /home/siftdesk.org/public_html/application/controllers/Home.php
Line: 2240
Function: _error_handler

File: /home/siftdesk.org/public_html/index.php
Line: 316
Function: require_once