Kontrólpunktar fyrir loftmyndatöku - Aerial Ground Control Points

[IS] Náttúrufræðistofnun heldur utan um kontrólpunkta sem er settir niður til að staðsetja loftmyndir. Í flestum tilfellum er um ræða hvíta ferningar sem eru 60x60 sm, en á jöklum eru þeir bleikir. Þar sem ekki er hægt að setja niður kontólpunkta í formi ferninga er miðað við aðra fasta punkta í landslaginu.

X, Y nákvæmni: 2-3 sm

Hæðarnákvæmni: 3-5 sm

Fitjueigindir, útskýringar:

efni_raun: Lýsir gerð punktsins (Náttúrulegur punktur, Gúmmímotta, Málað, Suðuplast, Bleik plata). Eiginleiki mynd sýnir hvað er mælt, almennt miðjan á hlutnum nema annað sé tekið fram á myndinni.

austur_maelt: Austur-hnit í ISN2016 EPSG:8088

nordur_maelt: Norður-hnit í ISN2016 EPSG:8088

ish_haed_maelt: ish2004 hæð

sporvolu_haed_maelt: Hæð yfir ellipsoíð

dagsetning_maelt: Mælingardagur

mynd: Hlekkur á mynd af punktinum (ef tiltækt)

maeli_adferd: Mæliaðferð, hvort sem er RTK eða FastStatic

[EN] This dataset contains ground control points placed by the Natural Science Institute of Iceland that can be used for aerial imagery geolocation.

Normally white squares of 60x60cm or natural objects or pink squares 60x60cm on glaciers.

X, Y Precision: 2-3 cm

Elevation precision: 3-5 cm

Properties description:

efni_raun: describes the type of point (Natual point, Rubber mat, Painted, Welded plastic, Pink plate), the property mynd shows what is measured, generally the center of the object if not indicated differently in the image.

austur_maelt: easting in ISN2016 EPSG:8088

nordur_maelt: northing in ISN2016 EPSG:8088

ish_haed_maelt: ish2004 elevation

sporvolu_haed_maelt: ellipsoidal height

dagsetning_maelt: date of measurement

mynd: link to the image of the point (if available)

maeli_adferd: Measurement method if RTK or FastStatic

Date (Publication): 2024-09-02

Status: On going

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Náttúrufræðistofnun		natt@natt.is	Originator

Maintenance and update frequency: As needed

Theme

Ground
Control
Point
Aerial
Iceland
Orthomosaic
Kóntrolpunktur
gcp
Loftmyndir
Ísland

Place

World

Access constraints: Copyright

Use constraints: otherRestictions

Other constraints: CC BY 4.0 - https://creativecommons.org/licenses/by/4.0/

Spatial representation type: Vector

Language: ice

Character set: UTF8

Topic category

Imagery base maps earth cover
Elevation

Begin date: 2023-04-01

End date: 2024-09-30

Reference system identifier: EPSG:8088

Digital transfer options

OnLine resource

Protocol	Linkage	Name
OGC:WFS-2.0.0-http-get-capabilities	https://gis.lmi.is/geoserver/wfs?request=GetCapabilities	Grunnkerfi:gcp_net_public
OGC:WMS-1.3.0-http-get-capabilities	https://gis.lmi.is/geoserver/wms?service=WMS&version=1.3.0&request=GetCapabilities	Grunnkerfi:gcp_net_public

Hierarchy level: Dataset

Statement: X, Y Precision: 2-3 cm

Elevation precision: 3-5 cm

Properties description:

efni_raun: describes the type of point (Natual point, Rubber mat, Painted, Welded plastic, Pink plate), the property mynd shows what is measured, generally the center of the object if not indicated differently in the image.

austur_maelt: easting in ISN2016 EPSG:8088

nordur_maelt: northing in ISN2016 EPSG:8088

ish_haed_maelt: ish2004 elevation

sporvolu_haed_maelt: ellipsoidal height

dagsetning_maelt: date of measurement

mynd: link to the image of the point (if available)

maeli_adferd: Measurement method if RTK or FastStatic