DART RemoteSensing NERC VerticalAerialPhotographs

DART were granted a series of airborne surveys by NERC ARSF. These surveys comprised EAGLE and HAWK hyperspectral data, LiDAR and visible wavelength photography. The surveys were flown at specific periods during the crop cycle in order to evaluate the impact of the phenological cycle on heritage detection.

Survey dates were: 2011-06-14 (Diddington only), 2012-03-23 and 2012-06-20. This dataset is the visible wavelength photography. These were captured using a Leica RCD105 survey camera. The dataset comprises the images as 16 bit TIFs (Tagged Image File Format), an event file containing the EO(Exterior Orientation) parameters, camera calibration certificates containing the IO(Interior Orientation) parameters, thumbnails in JPG (Joint Photographic Expert Group) format, and Google Earth kml files showing camera positions.

Data and Resources

Additional Info

Field Value
Author NERC_ARSF
Maintainer Anthony Beck
instrument Leica RCD105
instrument.calibrationDetails Focal plane data:Pixel size = 6.8 microm, Sensor size [Pixel]=7212 x 5408, Sensor size [mm], 49.0416 x 36.7744(61.2979 diagonal), Interior orientation parameters Notes: Interior orientation coefficients follow the sign convention used in Leica Geosystems’ Leica Photogrammetry Suite (LPS) software. Use of these coefficients, particularly the radial distortion coefficients, in other photogrammetry software may require changing the sign of the coefficients. Interior orientation parameters below are determined using the Australis software package and reflect a static (i.e., laboratory) calibration. The parameters given reflect the so-called “balanced lens distortion” model. Parameter (symbol, value, std dev): Offset of principle point [mm] XP -0.0025 1.0430E-03 YP -0.3247 9.3550E-04 Focal length [mm] Cb 59.799 2.90861E-03 Radial distortion: K0 8.57325E-03 1.94331E-05, K1 -2.01969E-05 3.47319E-08, K2 5.13135E-09 4.01926E-11 Decentring distortion P1 0.0000 0.000e0, P2 0.0000 0.000e0 /n In plane distortion B1 (affinity, or pixel stretching / compression) 0.0000 0.000e0 B2 (shear, or diagonal distortion) 0.0000 0.000e0 Lens distortion table Note: This table is provided for users of photogrammetric software packages that do not allow direct input of the calibration coefficients provided in the preceding table. The table below is generated by plotting the distortion values using the coefficients in the preceding table and is therefore redundant information. r[mm],dr[microm] 0.0,0 1.0,8.6 2.0,17 3.0,25.2 ,4.0,33 5.0,40.4 6.0,47.1 7.0,53.2 8.0,58.4 9.0,62.7 10.0,66 11.0,68.3 12.0,69.3 13.0,69 14.0,67.4 15.0,64.3 16.0,59.8 17.0,53.8 18.0,46.2 19.0,37.1 20.0,26.3 21.0,14 22.0,0 23.0,-15.5 24.0,-32.6 25.0,-51.1 26.0,-71.1 27.0,-92.4 28.0,-115 29.0,-138.7 30.0,-163.4 31.0,-189
instrument.headerMetadata Is contained in the EXIF
instrument.measurementDomainAndUnits Relative reflectance
instrumentID Camera Head=CH39 021 Camera Controller=CC105 021
resource.abstract DART were granted a series of airborne surveys by NERC ARSF. These surveys comprised EAGLE and HAWK hyperspectral data, LiDAR and visible wavelength photography. The surveys were flown at specific periods during the crop cycle in order to evaluate the impact of the phenological cycle on heritage detection. Survey dates were: 2011-06-14 (Diddington only), 2012-03-23 and 2012-06-20. This dataset is the visible wavelength photography. These were captured using a Leica RCD105 survey camera. The dataset comprises the images as 16 bit TIFs (Tagged Image File Format), an event file containing the EO(Exterior Orientation) parameters, camera calibration certificates containing the IO(Interior Orientation) parameters, thumbnails in JPG (Joint Photographic Expert Group) format, and Google Earth kml files showing camera positions.
resource.accessConstraints None
resource.bibliographicCitation @data{dart_remotesensing_nerc_verticalaerialphotographs, doi = {not allocated}, url = {http://dartportal.leeds.ac.uk/dataset/dart_remotesensing_nerc_verticalaerialphotographs}, author = {NERC_ARSF}, publisher = {The DART project, School of Computing, University of Leeds}, title = {DART_RemoteSensing_NERC_VerticalAerialPhotographs}, year = {2013}, note = {DART is a Science and Heritage project funded by AHRC and EPSRC. Further DART data and details can be found at http://dartportal.leeds.ac.uk}}
resource.completeness Complete
resource.consistency Consistent data structure, attribution and relationships.
resource.creation.endDateTime 2012
resource.creation.startDateTime 2011
resource.creation.status Complete
resource.creator.name NERC_ARSF
resource.custodian.email a.r.beck@leeds.ac.uk
resource.custodian.name Anthony Beck
resource.custodian.orcID http://orcid.org/0000-0002-2991-811X
resource.description Near vertical digital photographs were acquired by NERC ARSF using the Leica RCD105 digital camera as part of the airborne surveys conducted for the DART project. The data are supplied as 16-bit TIFF images with additional meta-data in TIFF tags. Where possible, the TIFF tags comply with the TIFF and EXIF standards used for digital cameras. The standard geolocation tags have been added so that the photographs will appear in the right world position correctly in album software. Note this is not the same as orthorectification or full georeferencing this merely locates where in the world the photographs were taken. Some additional information has been placed in XML in the ImageDescription tag (see below for an example). This includes: -Original Filename - raw camera filename that the photograph was produced from -Project Code - ARSF Project Code -Flight Day - Julian Day of Flight -Location Name - Site Location -Position Information -Latitude - latitude of aircraft when image taken -Longitude - longitude of aircraft when image taken -Height - height of aircraft when image taken -Exterior Angles -Omega - rotation about x-axis -Phi - rotation about y-axis -Kappa - rotation about z-axis The tags can be read using free software such as exiftool, available from: http://www.sno.phy.queensu.ca/∼phil/exiftool/, freeware, Windows/Mac/Linux. The event file gives you an overview of the time, location and attitude of the aircraft when each photograph was acquired. This should agree exactly with the data in the tagged tiffs, since both data are from the post processed navigation file (unless mentioned otherwise above). The eventfile is in Comma Separated Value (CSV) format and can be viewed using any text editor or as a spreadsheet in Excel / OpenOffice. There are 17 columns in the event file, the relevant ones are: -ImageName: The filename of the photograph in question -GPSTime: The time when the photograph was acquired -Latitude: Latitude when the photograph was acquired -Longitude: Longitude when the photograph was acquired -Altitude: Altitude when the photograph was acquired -Omega: Rotation about the x-axis -Phi: Rotation about the y-axis -Kappa: Rotation about the z-axis
resource.distribution.technique Download only
resource.edition 1
resource.fileFormat .tif, kml, pdf, csv, jpg
resource.funder National Environmental Research Council,Science and Heritage Programme, Arts and Humanities Research Council, Engineering and Physical Sciences Research Council
resource.instructionalMethod None - this is a collection
resource.keywords Remote Sensing, Monitoring, Leica RCD 105, Aerial Phtography, near vertical, photography, photogrammetry, NERC, ARSF
resource.language eng
resource.license odc-by
resource.license.typeURL http://opendatacommons.org/licenses/by/
resource.lineage None: this is raw data
resource.localURI http://dartportal.leeds.ac.uk/storage/f/dart_remotesensing_nerc_verticalaerialphotographs
resource.metadata.creator.email scds@leeds.ac.uk
resource.metadata.creator.name David Stott
resource.metadata.creator.orcID http://orcid.org/0000-0003-3042-2813
resource.metadata.language eng
resource.methodsAndStandards See the NERC flight documentation contained in the collection.
resource.processingStage Complete
resource.processingSteps No further processing conducted beyond that undertaken by NERC.
resource.publisher School of Computing, University of Leeds
resource.purpose multi-temporal heritage detection
resource.relatedResources DartProjectOverview
resource.repositoryName http://dartportal.leeds.ac.uk/
resource.reuseConstraints No conditions apply for reuse (remix it, publish it, share it, commercialise it, sell it etc.) except attribution (see resource.bibliographicCitation)
resource.reusePotential archaeology, environment, heritage, soil science, farming, ecology, geography, earth science
resource.samplingStrategy The aircraft flew at approximately 700m altitude. There was greater than 20% overlap between flightlines. Full collection metrics are maintained in each image exif
resource.topic geoscientificInformation, environment, heritage, farming, climatology/Meteorology/Atmosphere, imageryBaseMapsEarthCover, society, structure
resource.type Dataset collection
resource.type.specific Raster, Text
resource.updateFrequency not planned
spatial { "type": "Polygon", "coordinates": [ [ [-1.907587, 52.280552],[-0.246205, 52.280552], [-0.246205, 51.703178], [-1.907587, 51.703178], [-1.907587, 52.280552] ] ] }
spatial-text United Kingdom
spatial.boundingBox.OSGB36.east 519741
spatial.boundingBox.OSGB36.north 266160
spatial.boundingBox.OSGB36.referenceSystem OSGB36
spatial.boundingBox.OSGB36.south 200497
spatial.boundingBox.OSGB36.west 406483
spatial.boundingBox.WGS84.eastLongitude -0.246205
spatial.boundingBox.WGS84.northLatitude 52.280552
spatial.boundingBox.WGS84.referenceSystem WGS84
spatial.boundingBox.WGS84.southLatitude 51.703178
spatial.boundingBox.WGS84.westLongitude -1.907587
spatial.defaultReferenceSystem OSGB36
spatial.driftGeology DDCF: http://www.bgs.ac.uk/lexicon/lexicon.cfm?pub=TILMP, DDPF: http://www.bgs.ac.uk/Lexicon/lexicon.cfm?pub=T1T2, HHCC: Clay: no superficial drift geology, HHQF: no superficial drift geology
spatial.landuse Permanent pasture: DDPF, Arable: DDCF, HHCF, HHQF
spatial.ordnanceSurveyPlaceName Harnhill (http://data.ordnancesurvey.co.uk/id/50kGazetteer/109734) and Diddington (http://data.ordnancesurvey.co.uk/id/50kGazetteer/72767)
spatial.polygon.OSGB36 { "type": "Polygon", "coordinates": [ [ [406483, 266160],[519741, 266160], [519741, 200497], [406483, 200497], [406483, 266160] ] ] }
spatial.polygon.WGS84 { "type": "Polygon", "coordinates": [ [ [-1.907587, 52.280552],[-0.246205, 52.280552], [-0.246205, 51.703178], [-1.907587, 51.703178], [-1.907587, 52.280552] ] ] }
spatial.solidGeology DDCF and DDPF: http://www.bgs.ac.uk/lexicon/lexicon.cfm?pub=OXC, HHCC: http://www.bgs.ac.uk/lexicon/lexicon.cfm?pub=CB, HHQF: http://www.bgs.ac.uk/lexicon/lexicon.cfm?pub=SI
temporal.rangeDescribedByDataDateTime.end 2011
temporal.rangeDescribedByDataDateTime.start 2012
temporal.resource.availableDate 2013-08-01
title.alternative dart_remotesensing_nerc_verticalaerialphotographs
title.pattern Where appropriate each resource has been named with the following pattern: DART_<3 character sensor/collection name>_<spatial location>_<StartDateTime YYYYMMDD with optional HHMM>_<endDateTime YYYYMMDD with optional HHMM>_<stage PRO or RAW to refer to processed or raw data>_<other stuff>.<suffix>. Hence, the file DART_T3P_DDCF_20110823_20130106_PRO.csv refers to DART data collected using the T3P Imko soil moisture probes at Diddington Clay Field between 23rd August 2011 and 6th January 2013 which has been processed and is available in a comma separated text format.