An Efficient Vector-Raster Overlay Algorithm for High-Accuracy and High-Efficiency Surface Area Calculations of Irregularly Shaped Land Use Patches
The Earth’s surface is uneven, and conventional area calculation methods are based on the assumption that the projection plane area can be obtained without considering the actual undulation of the Earth’s surface and by simplifying the Earth’s shape to be a standard ellipsoid. However, the true surf...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2017-05-01
|
| Series: | ISPRS International Journal of Geo-Information |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2220-9964/6/6/156 |
| _version_ | 1828913665179385856 |
|---|---|
| author | Peng Xie Yaolin Liu Qingsong He Xiang Zhao Jun Yang |
| author_facet | Peng Xie Yaolin Liu Qingsong He Xiang Zhao Jun Yang |
| author_sort | Peng Xie |
| collection | DOAJ |
| description | The Earth’s surface is uneven, and conventional area calculation methods are based on the assumption that the projection plane area can be obtained without considering the actual undulation of the Earth’s surface and by simplifying the Earth’s shape to be a standard ellipsoid. However, the true surface area is important for investigating and evaluating land resources. In this study, the authors propose a new method based on an efficient vector-raster overlay algorithm (VROA-based method) to calculate the surface areas of irregularly shaped land use patches. In this method, a surface area raster file is first generated based on the raster-based digital elevation model (raster-based DEM). Then, a vector-raster overlay algorithm (VROA) is used that considers the precise clipping of raster cells using the vector polygon boundary. Xiantao City, Luotian County, and the Shennongjia Forestry District, which are representative of a plain landform, a hilly topography, and a mountain landscape, respectively, are selected to calculate the surface area. Compared with a traditional method based on triangulated irregular networks (TIN-based method), our method significantly reduces the processing time. In addition, our method effectively improves the accuracy compared with another traditional method based on raster-based DEM (raster-based method). Therefore, the method satisfies the requirements of large-scale engineering applications. |
| first_indexed | 2024-12-13T19:41:01Z |
| format | Article |
| id | doaj.art-bdb82390177648079667f894f887356b |
| institution | Directory Open Access Journal |
| issn | 2220-9964 |
| language | English |
| last_indexed | 2024-12-13T19:41:01Z |
| publishDate | 2017-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | ISPRS International Journal of Geo-Information |
| spelling | doaj.art-bdb82390177648079667f894f887356b2022-12-21T23:33:41ZengMDPI AGISPRS International Journal of Geo-Information2220-99642017-05-016615610.3390/ijgi6060156ijgi6060156An Efficient Vector-Raster Overlay Algorithm for High-Accuracy and High-Efficiency Surface Area Calculations of Irregularly Shaped Land Use PatchesPeng Xie0Yaolin Liu1Qingsong He2Xiang Zhao3Jun Yang4School of Resource and Environmental Science, Wuhan University, 129 Luoyu Road, Wuhan 430079, ChinaSchool of Resource and Environmental Science, Wuhan University, 129 Luoyu Road, Wuhan 430079, ChinaSchool of Resource and Environmental Science, Wuhan University, 129 Luoyu Road, Wuhan 430079, ChinaSchool of Resource and Environmental Science, Wuhan University, 129 Luoyu Road, Wuhan 430079, ChinaCollege of Urban and Environmental Science, Liaoning Normal University, Dalian 116021, ChinaThe Earth’s surface is uneven, and conventional area calculation methods are based on the assumption that the projection plane area can be obtained without considering the actual undulation of the Earth’s surface and by simplifying the Earth’s shape to be a standard ellipsoid. However, the true surface area is important for investigating and evaluating land resources. In this study, the authors propose a new method based on an efficient vector-raster overlay algorithm (VROA-based method) to calculate the surface areas of irregularly shaped land use patches. In this method, a surface area raster file is first generated based on the raster-based digital elevation model (raster-based DEM). Then, a vector-raster overlay algorithm (VROA) is used that considers the precise clipping of raster cells using the vector polygon boundary. Xiantao City, Luotian County, and the Shennongjia Forestry District, which are representative of a plain landform, a hilly topography, and a mountain landscape, respectively, are selected to calculate the surface area. Compared with a traditional method based on triangulated irregular networks (TIN-based method), our method significantly reduces the processing time. In addition, our method effectively improves the accuracy compared with another traditional method based on raster-based DEM (raster-based method). Therefore, the method satisfies the requirements of large-scale engineering applications.http://www.mdpi.com/2220-9964/6/6/156surface arealandformsvector-raster overlyedge-effectDEMpixel boundary |
| spellingShingle | Peng Xie Yaolin Liu Qingsong He Xiang Zhao Jun Yang An Efficient Vector-Raster Overlay Algorithm for High-Accuracy and High-Efficiency Surface Area Calculations of Irregularly Shaped Land Use Patches ISPRS International Journal of Geo-Information surface area landforms vector-raster overly edge-effect DEM pixel boundary |
| title | An Efficient Vector-Raster Overlay Algorithm for High-Accuracy and High-Efficiency Surface Area Calculations of Irregularly Shaped Land Use Patches |
| title_full | An Efficient Vector-Raster Overlay Algorithm for High-Accuracy and High-Efficiency Surface Area Calculations of Irregularly Shaped Land Use Patches |
| title_fullStr | An Efficient Vector-Raster Overlay Algorithm for High-Accuracy and High-Efficiency Surface Area Calculations of Irregularly Shaped Land Use Patches |
| title_full_unstemmed | An Efficient Vector-Raster Overlay Algorithm for High-Accuracy and High-Efficiency Surface Area Calculations of Irregularly Shaped Land Use Patches |
| title_short | An Efficient Vector-Raster Overlay Algorithm for High-Accuracy and High-Efficiency Surface Area Calculations of Irregularly Shaped Land Use Patches |
| title_sort | efficient vector raster overlay algorithm for high accuracy and high efficiency surface area calculations of irregularly shaped land use patches |
| topic | surface area landforms vector-raster overly edge-effect DEM pixel boundary |
| url | http://www.mdpi.com/2220-9964/6/6/156 |
| work_keys_str_mv | AT pengxie anefficientvectorrasteroverlayalgorithmforhighaccuracyandhighefficiencysurfaceareacalculationsofirregularlyshapedlandusepatches AT yaolinliu anefficientvectorrasteroverlayalgorithmforhighaccuracyandhighefficiencysurfaceareacalculationsofirregularlyshapedlandusepatches AT qingsonghe anefficientvectorrasteroverlayalgorithmforhighaccuracyandhighefficiencysurfaceareacalculationsofirregularlyshapedlandusepatches AT xiangzhao anefficientvectorrasteroverlayalgorithmforhighaccuracyandhighefficiencysurfaceareacalculationsofirregularlyshapedlandusepatches AT junyang anefficientvectorrasteroverlayalgorithmforhighaccuracyandhighefficiencysurfaceareacalculationsofirregularlyshapedlandusepatches AT pengxie efficientvectorrasteroverlayalgorithmforhighaccuracyandhighefficiencysurfaceareacalculationsofirregularlyshapedlandusepatches AT yaolinliu efficientvectorrasteroverlayalgorithmforhighaccuracyandhighefficiencysurfaceareacalculationsofirregularlyshapedlandusepatches AT qingsonghe efficientvectorrasteroverlayalgorithmforhighaccuracyandhighefficiencysurfaceareacalculationsofirregularlyshapedlandusepatches AT xiangzhao efficientvectorrasteroverlayalgorithmforhighaccuracyandhighefficiencysurfaceareacalculationsofirregularlyshapedlandusepatches AT junyang efficientvectorrasteroverlayalgorithmforhighaccuracyandhighefficiencysurfaceareacalculationsofirregularlyshapedlandusepatches |