A proposed decision support tool for wood procurement planning based on stereo-matching of aerial images
In Sweden the cap portion of the harvested stem volume derives from Non-Industrial Private Forest (NIPF) owners. In the current study a Decision Support Tool (DST) for wood procurement planning based on stereo-matching of aerial images is presented. Two stages are described, namely (1) automatic seg...
| Autor principal: | |
|---|---|
| Formato: | H2 |
| Lenguaje: | Inglés |
| Publicado: |
SLU/Dept. of Forest Resource Management
2014
|
| Materias: |
| _version_ | 1855571164448948224 |
|---|---|
| author | Viklund, Johan |
| author_browse | Viklund, Johan |
| author_facet | Viklund, Johan |
| author_sort | Viklund, Johan |
| collection | Epsilon Archive for Student Projects |
| description | In Sweden the cap portion of the harvested stem volume derives from Non-Industrial Private Forest (NIPF) owners. In the current study a Decision Support Tool (DST) for wood procurement planning based on stereo-matching of aerial images is presented. Two stages are described, namely (1) automatic segmentation using a Mean Shift algorithm; (2) wall-to-wall mapping of the stands using Semi-Global Matching (SGM) in combination with a high-resolution Digital Elevation Model (DEM). The study was conducted in a coniferous boreal forest area in northern Sweden. 365 sample plots (8 m radius) were measured in the field where HGV (dm) ranged between 49.0 - 246.0 dm (mean 139.3 dm), DGV 67.0 - 400.0 mm (mean 196.8 mm), VOL 7.0 - 665.0 m3/ha (mean 151.1 m3/ha) and BA 20.0 - 635.0 dm2/ha (mean 204.9 dm2/ha). Point clouds were extracted from the aerial images with 60% forward overlap. A canopy cover metric was used to improve the VOL and BA estimations. Plot level accuracies were calculated using leave-one-stand-out-cross-validation resulting in a Root Mean Square Error (in percent of surveyed mean) for: HGV 11.2%, DGV 15.2%, VOL (m3/ha) 33.5% and BA 30.3%. Each stand was given an average of the estimated forest variables enabling ranking between the stands based on their estimated values. The results indicated that the proposed DST can be used as a support in wood procurement planning. Aerial images are an appropriate data source in the proposed DST, mainly because of the readily availability and low cost. |
| format | H2 |
| id | RepoSLU7323 |
| institution | Swedish University of Agricultural Sciences |
| language | Inglés |
| publishDate | 2014 |
| publishDateSort | 2014 |
| publisher | SLU/Dept. of Forest Resource Management |
| publisherStr | SLU/Dept. of Forest Resource Management |
| record_format | eprints |
| spelling | RepoSLU73232014-09-22T09:05:13Z A proposed decision support tool for wood procurement planning based on stereo-matching of aerial images Viklund, Johan semi-global matching canopy cover forest inventory plot level forest variables stem volume In Sweden the cap portion of the harvested stem volume derives from Non-Industrial Private Forest (NIPF) owners. In the current study a Decision Support Tool (DST) for wood procurement planning based on stereo-matching of aerial images is presented. Two stages are described, namely (1) automatic segmentation using a Mean Shift algorithm; (2) wall-to-wall mapping of the stands using Semi-Global Matching (SGM) in combination with a high-resolution Digital Elevation Model (DEM). The study was conducted in a coniferous boreal forest area in northern Sweden. 365 sample plots (8 m radius) were measured in the field where HGV (dm) ranged between 49.0 - 246.0 dm (mean 139.3 dm), DGV 67.0 - 400.0 mm (mean 196.8 mm), VOL 7.0 - 665.0 m3/ha (mean 151.1 m3/ha) and BA 20.0 - 635.0 dm2/ha (mean 204.9 dm2/ha). Point clouds were extracted from the aerial images with 60% forward overlap. A canopy cover metric was used to improve the VOL and BA estimations. Plot level accuracies were calculated using leave-one-stand-out-cross-validation resulting in a Root Mean Square Error (in percent of surveyed mean) for: HGV 11.2%, DGV 15.2%, VOL (m3/ha) 33.5% and BA 30.3%. Each stand was given an average of the estimated forest variables enabling ranking between the stands based on their estimated values. The results indicated that the proposed DST can be used as a support in wood procurement planning. Aerial images are an appropriate data source in the proposed DST, mainly because of the readily availability and low cost. SLU/Dept. of Forest Resource Management 2014 H2 eng https://stud.epsilon.slu.se/7323/ |
| spellingShingle | semi-global matching canopy cover forest inventory plot level forest variables stem volume Viklund, Johan A proposed decision support tool for wood procurement planning based on stereo-matching of aerial images |
| title | A proposed decision support tool for wood procurement planning based on stereo-matching of aerial images |
| title_full | A proposed decision support tool for wood procurement planning based on stereo-matching of aerial images |
| title_fullStr | A proposed decision support tool for wood procurement planning based on stereo-matching of aerial images |
| title_full_unstemmed | A proposed decision support tool for wood procurement planning based on stereo-matching of aerial images |
| title_short | A proposed decision support tool for wood procurement planning based on stereo-matching of aerial images |
| title_sort | proposed decision support tool for wood procurement planning based on stereo-matching of aerial images |
| topic | semi-global matching canopy cover forest inventory plot level forest variables stem volume |