Dataset
Airborne LiDAR and RGB imagery from Sepilok Reserve and Danum Valley in Malaysia in 2020
Abstract
This dataset contains LiDAR and RedGreenBlue (RGB) Imagery data collected from a helicopter over two forest sites in Sabah, Malaysia in February 2020.
Point cloud data are included in LAS (LASer) format as well as RGB data summary rasters in .tif format. The raster images were processed with LAStools using default parameters. Canopy Height Model (CHM), Digital Surface Model (DSM), Digital Terrain Model (DTM) and pulse density (pd) are also present. The RGB data are provided as jpgs and are organised by flight julian day (JD).
The Sepilok Reserve was scanned in full between 15 February 2020 (julian day 46). This is a total area of 27 square kilometres. In Danum Valley the scanning was distributed into two contiguous areas, the protected area (20 square kilometres) and the reduced impact logging area (9 square kilometres) on the 19-22 February 2020 (julian day 50-53). Importantly, these areas were chosen because of the availability of prior airborne LiDAR data collected by NERC in 2014 and by Ground Data Solutions in 2013.
The helicopter flew at approximately 350 m altitude above the forest canopy and at a speed of approximately 100 km/hr. The data were georeferenced using ground control points and are provided in the UTM 50N coordinate system.
Details
| Previous Info: |
No news update for this record
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| Previously used record identifiers: |
No related previous identifiers.
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| Access rules: |
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence(s): http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record. |
| Data lineage: |
All data was collected by Ground Data Solutions R&D Sdn Bhd from a helicopter. The raw LiDAR waveform data were then discretized into point cloud data (in LAS1.2 format). Data were prepared by the project team before uploading to CEDA. |
| Data Quality: |
LiDAR
Vertical accuracy ±0.15 m (95% confidence or 2 sigma) in flat open terrain
Horizontal accuracy 0.5 m (95% confidence or 2 sigma) in flat open terrain
Average point density 10 pts/m2
Average point spacing 0.31m (Open terrain) 1-3m (vegetated terrain)
Laser points relative accuracy 2 to 3 cm RMSE
RGB
Average pixel resolution 10 cm
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| File Format: |
Data are tif images, shape files and LASer (.las) formatted.
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Related Documents
Process overview
Instrument/Platform pairings
| Riegl LMS-Q560 | Deployed on: Ground Data Solutions helicopter |
Mobile platform operations
| Mobile Platform Operation 1 | Mobile Platform Operation for Airborne LiDAR and RGB data from Sepilok Reserve and Danum Valley in Malaysia in 2020 |
| Output Description | None |
No variables found.
Temporal Range
2020-02-14T00:00:00
2020-02-20T00:00:00
Geographic Extent
5.8640° |
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117.6004° |
117.9950° |
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4.8004° |