Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1117/12.2223012 |
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 |
ISSN | 0277-786X |
出版年 | 2016 |
卷号 | 9877 |
EISBN | 978-1-5106-0118-5 |
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 |
推荐引用方式 GB/T 7714 | 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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