Christchurch 0.075m Urban Aerial Photos Index Tiles (2018-2019)

Index Tiles ONLY, for actual orthophotos see layer [Christchurch 0.075m Urban Aerial Photos (2018-2019)]( http://data.linz.govt.nz/layer/10504 1)


Orthophotography for urban areas across Christchurch City totalling approximately 524 km2. Taken in the flying season (summer period) 2018-19. The area of capture is located in the Canterbury Region of the South Island.


Imagery was captured for Environmental Canterbury by Aerial Surveys Ltd, Unit A1, 8 Saturn Place, Albany,0632, New Zealand.


Data comprises:

• 7984 ortho-rectified RGB GeoTIFF images in NZTM projection, tiled into the LINZ Standard 1:500 tile layout

•Tile layout in NZTM projection containing relevant information.


The supplied imagery is in terms of New Zealand Transverse Mercator (NZTM) map projection. Please refer to the supplied tile layout for specific details, naming conventions, etc.


Imagery supplied as 7.5 cm pixel resolution (0.075m GSD), 3-band (RGB) uncompressed GeoTIFF. The final spatial accuracy is ±0.15 m @ 95% confidence level.

Simple

Identification info

Date (Creation)
2019
Status
Completed
Point of contact
Role Organisation Electronic mail address
Point of contact

Toitū Te Whenua Land Information New Zealand

customersupport@linz.govt.nz

Spatial representation type
Vector

Spatial resolution

Equivalent scale

Denominator
500
Topic category
  • Imagery base maps earth cover

Extent

Geographic identifier
nzl

Title

ANZMet Lite Country codelist

Date (Publication)
2009-03-31
Edition

Version 1.0

Edition date
2009-03-31
Citation identifier
http://asdd.ga.gov.au/asdd/profileinfo/anzlic-country.xml#Country

Cited responsible party
Role Organisation Electronic mail address
Custodian

ANZLIC the Spatial Information Council

Extent

N
S
E
W


Maintenance and update frequency
Not planned

Resource format

Title

*.xml

Date
Edition

Unknown

Resource constraints

Classification
Unclassified

Resource constraints

Use limitation

Copyright of this work is owned by Environment Canterbury © Environment Canterbury

Use constraints
Copyright

Resource constraints

Use limitation

Released by LINZ under Creative Commons Attribution 4.0 International (CC BY 4.0) with: Following Attribution: "Sourced from the LINZ Data Service and licensed by Environment Canterbury for reuse under CC BY 4.0" For details see: https://www.linz.govt.nz/data/licensing-and-using-data/attributing-elevation-or-aerial-imagery-data

Use constraints
License
Language
English
Character encoding
UTF8

Distribution Information

OnLine resource

https://data.linz.govt.nz/layer/105045-christchurch-0075m-urban-aerial-photos-index-tiles-2018-2019/

Resource lineage

Statement

Project

Aerial photography was captured over the urban areas in the Christchurch City totalling approximately 524 km2. The areas of capture are located in the Canterbury Region of the South Island.


Data Acquisition

Aerial photography was captured using Vexcel's digital UCE camera: 5-6 November, 2018, 17 December 2018, 24 December 2018, 27 January 2019, 9 February 2019, 26

March 2019.


Ground Support

New/existing control and LINZ benchmarks were used for aerial triangulation.


Camera

All photography was captured using Vexcel's digital UCE camera and flown at:

0.075 m GSD: 4,732 ft (1,441 m) flying height

Camera Lens: 100 mm


Sun Angle

Imagery captured with a sun angle between 43.8 and 69.1 degrees


Flight Planning

SN14003 Selwyn: 65 runs, 1,058 frames

SN14008 Waimate: 19 runs, 247 frames

SN14009 Christchurch: 44 runs, 2,273 frames

SN14010 Banks Peninsula: 24 runs, 459 frames

Stereo capture: Forward overlap 60%, min 54%. Side overlap 35%, min 15%.


Environmental Specification

Imagery captured with no cloud or cloud shadow within the area of interest. Coastal and harbour

areas captured within two hours either side of low tide.


Urban Building Displacement Specification

Urban 0.075 m GSD imagery – by flying with 60% forward overlap and with 35% sidelap (standard

stereo coverage), 1 m building lean per 3 m height in the corners of the imagery. Christchurch CBD and University of Canterbury areas flown with 80% forward with 80% sidelap to achieve <0.37 m per 3 m height over areas with tall buildings.

Hierarchy level
Dataset
Other

dataset

Reference System Information

Reference system identifier
2193

Metadata constraints

Use limitation

Copyright is owned by Toitū Te Whenua Land Information New Zealand © LINZ

Use constraints
Copyright

Metadata constraints

Use limitation

Released by LINZ under Creative Commons Attribution 4.0 International (CC BY 4.0) with: Following Attribution: "Sourced from the LINZ Data Service and licensed for reuse under CC BY 4.0" For details see https://www.linz.govt.nz/data/licensing-and-using-data/attributing-linz-data

Use constraints
License

Metadata

Metadata identifier
2afa5f5c-0986-9b0e-502a-2c1edbe848ba

Language
English
Character encoding
UTF8
Contact
Role Organisation Electronic mail address
Point of contact

Toitū Te Whenua Land Information New Zealand

customersupport@linz.govt.nz

Type of resource

Resource type
Dataset
Name

dataset

Date info (Revision)
2020-10-01

Metadata standard

Title

ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata

Edition

1.1

 
 

Spatial extent

N
S
E
W



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