Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3390/s141222643 |
Tree Crown Mapping in Managed Woodlands (Parklands) of Semi-Arid West Africa Using WorldView-2 Imagery and Geographic Object Based Image Analysis | |
Karlson, Martin1; Reese, Heather2; Ostwald, Madelene1,3,4 | |
通讯作者 | Karlson, Martin |
来源期刊 | SENSORS |
ISSN | 1424-8220 |
出版年 | 2014 |
卷号 | 14期号:12页码:22643-22669 |
英文摘要 | Detailed information on tree cover structure is critical for research and monitoring programs targeting African woodlands, including agroforestry parklands. High spatial resolution satellite imagery represents a potentially effective alternative to field-based surveys, but requires the development of accurate methods to automate information extraction. This study presents a method for tree crown mapping based on Geographic Object Based Image Analysis (GEOBIA) that use spectral and geometric information to detect and delineate individual tree crowns and crown clusters. The method was implemented on a WorldView-2 image acquired over the parklands of Sapone, Burkina Faso, and rigorously evaluated against field reference data. The overall detection rate was 85.4% for individual tree crowns and crown clusters, with lower accuracies in areas with high tree density and dense understory vegetation. The overall delineation error (expressed as the difference between area of delineated object and crown area measured in the field) was 45.6% for individual tree crowns and 61.5% for crown clusters. Delineation accuracies were higher for medium (35-100 m(2)) and large (>= 100 m(2)) trees compared to small (<35 m(2)) trees. The results indicate potential of GEOBIA and WorldView-2 imagery for tree crown mapping in parkland landscapes and similar woodland areas. |
英文关键词 | remote sensing high spatial resolution WorldView-2 tree crown mapping tree crown delineation geographic object based image analysis woodland agroforestry parkland Burkina Faso |
类型 | Article |
语种 | 英语 |
国家 | Sweden |
收录类别 | SCI-E |
WOS记录号 | WOS:000346794300026 |
WOS关键词 | RESOLUTION SATELLITE IMAGERY ; SPECIES COMPOSITION ; CANOPY STRUCTURE ; AERIAL IMAGES ; FOREST ; DELINEATION ; CLASSIFICATION ; EXTRACTION ; SAHEL ; BIODIVERSITY |
WOS类目 | Chemistry, Analytical ; Engineering, Electrical & Electronic ; Instruments & Instrumentation |
WOS研究方向 | Chemistry ; Engineering ; Instruments & Instrumentation |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/184960 |
作者单位 | 1.Linkoping Univ, Ctr Climate Sci & Policy Res, Dept Themat Studies Environm Change, S-58183 Linkoping, Sweden; 2.Swedish Univ Agr Sci, Dept Forest Resource Management, Sect Forest Remote Sensing, S-90183 Umea, Sweden; 3.Univ Gothenburg, GMV, Ctr Environm & Sustainabil, S-40530 Gothenburg, Sweden; 4.Chalmers Univ Technol, S-40530 Gothenburg, Sweden |
推荐引用方式 GB/T 7714 | Karlson, Martin,Reese, Heather,Ostwald, Madelene. Tree Crown Mapping in Managed Woodlands (Parklands) of Semi-Arid West Africa Using WorldView-2 Imagery and Geographic Object Based Image Analysis[J],2014,14(12):22643-22669. |
APA | Karlson, Martin,Reese, Heather,&Ostwald, Madelene.(2014).Tree Crown Mapping in Managed Woodlands (Parklands) of Semi-Arid West Africa Using WorldView-2 Imagery and Geographic Object Based Image Analysis.SENSORS,14(12),22643-22669. |
MLA | Karlson, Martin,et al."Tree Crown Mapping in Managed Woodlands (Parklands) of Semi-Arid West Africa Using WorldView-2 Imagery and Geographic Object Based Image Analysis".SENSORS 14.12(2014):22643-22669. |
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