Arid
DOI10.1117/12.2223012
Object-oriented feature extraction approach for mapping supraglacial debris in Schirmacher Oasis using very high resolution satellite data
Jawak, Shridhar D.1; Jadhav, Ajay2; Luis, Alvarinho J.1
通讯作者Jawak, Shridhar D.
会议名称Conference on Land Surface and Cryosphere Remote Sensing III
会议日期APR 04-07, 2016
会议地点New Delhi, INDIA
英文摘要

Supraglacial debris was mapped in the Schirmacher Oasis, east Antarctica, by using WorldView-2 (WV-2) high resolution optical remote sensing data consisting of 8-band calibrated Gram Schmidt (GS)-sharpened and atmospherically corrected WV-2 imagery. This study is a preliminary attempt to develop an object-oriented rule set to extract supraglacial debris for Antarctic region using 8-spectral band imagery. Supraglacial debris was manually digitized from the satellite imagery to generate the ground reference data. Several trials were performed using few existing traditional pixel-based classification techniques and color-texture based object-oriented classification methods to extract supraglacial debris over a small domain of the study area. Multi-level segmentation and attributes such as scale, shape, size, compactness along with spectral information from the data were used for developing the rule set. The quantitative analysis of error was carried out against the manually digitized reference data to test the practicability of our approach over the traditional pixel-based methods. Our results indicate that OBIA-based approach (overall accuracy: 93%) for extracting supraglacial debris performed better than all the traditional pixel-based methods (overall accuracy: 80-85%). The present attempt provides a comprehensive improved method for semiautomatic feature extraction in supraglacial environment and a new direction in the cryospheric research.


英文关键词supraglacial debris WorldView-2 mapping pixel based classification methods object based methods
来源出版物LAND SURFACE AND CRYOSPHERE REMOTE SENSING III
ISSN0277-786X
出版年2016
卷号9877
EISBN978-1-5106-0118-5
出版者SPIE-INT SOC OPTICAL ENGINEERING
类型Proceedings Paper
语种英语
国家India
收录类别CPCI-S
WOS记录号WOS:000389680500038
WOS关键词DIGITAL ELEVATION MODEL ; GLACIERS ; COVER ; AEROSOLS
WOS类目Remote Sensing ; Optics
WOS研究方向Remote Sensing ; Optics
资源类型会议论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/305480
作者单位1.NCAOR, ESSO, Polar Remote Sensing Dept, Minist Earth Sci, Gama 403804, Goa, India;
2.Univ Pune, Sinhgad Coll Sci, Geoinformat Dept, Pune, Maharashtra, India
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Jawak, Shridhar D.,Jadhav, Ajay,Luis, Alvarinho J.. Object-oriented feature extraction approach for mapping supraglacial debris in Schirmacher Oasis using very high resolution satellite data[C]:SPIE-INT SOC OPTICAL ENGINEERING,2016.
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