Hamilton 0.05m Urban Aerial Photos (2020-2021)

Orthophotography of Hamilton City captured in the flying season of 2020-2021. Coverage encompasses urban areas within the Hamilton City District.


Imagery was captured for Hamilton City Council by AAM NZ Ltd, 6 Ossian St, Napier, New Zealand.


Data comprises:

• 1470 ortho-rectified RGB GeoTIFF images in NZTM projection, tiled into the LINZ Standard 1:1000 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 tile index layer for specific details, naming conventions, etc.


Imagery supplied as 5cm pixel resolution (0.05m GSD), 3-band (RGB) uncompressed GeoTIFF. The final spatial accuracy is ±0.15 at 90% confidence level in clear flat areas.


Index tiles for this dataset are available as layer [Hamilton 0.05m Urban Aerial Photos Index Tiles (2020-2021)]( http://data.linz.govt.nz/layer/110134 )

Simple

Identification info

Date (Creation)
2021
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
Grid

Spatial resolution

Equivalent scale

Denominator
1000
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 Hamilton City Council © Hamilton City Council

Use constraints
Copyright

Resource constraints

Use limitation

Released by Toitū Te Whenua Land Information New Zealand under Creative Commons Attribution 4.0 International (CC BY 4.0).


Use with the following attribution: 'Sourced from the LINZ Data Service and licensed by Hamilton City Council 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/110193-hamilton-005m-urban-aerial-photos-2020-2021/

Resource lineage

Statement

PROJECT DESIGN ACCURACY

Project specifications and technical processes were designed to achieve data accuracies as follows:

*Orthophotos*

Measured Point +/- 0.15m

Basis of Estimation: Project design


*Control*

Measured Point +/- 0.15m

Basis of Estimation: Survey methodology used


NOTES ON EXPECTED ACCURACY

Values shown are at 90% confidence interval.


LIMIATIONS OF DATA

Field/survey validation has not been undertaken


DATA VALIDATION

Imagery in the volume has been compared to control points obtained by field survey that were also used in the aero-triangulation process. The points were distributed across the area. Comparison of the field points with positions measured on the imagery result in:

No. of sites: 6

RMS X (m) 0.04

RMS y (m) 0.03

XY RMS (m) 0.05

90% Accuracy (m) 0.08

Required Accuracy (m) 0.15


SOURCE DATA

Item, Source, Description, Ref No, Date

Sensor, AAM, A3, PRJ37987, 28/12/2020 - 30/01/2021

GPS Base Data, GeoNET, CORS, PRJ37987, 28/12/2020 - 30/01/2021

Base Stn Coords, LINZ, Static RTK, PRJ37987, 28/12/2020 - 30/01/2021

Field Survey, WSP, RTK GPS, PRJ37987, 16/02/2021


DATA CHARACTERISTICS

Device Name: A3

Resolution: 5 cm

Type: 8-bit RGB

File Format: GeoTIFF

Map Projection: NZTM

Spatial Accuracy Specification: 0.15m

Capture Constraints: >40 egrees sun angle


REFERENCE SYSTEMS

Horizontal: NZGD2000 Datum, NZTM Projection

Vertical: NZVD2016/Moturiki 1953, Geoid Model: NZ Geoid 2016

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 Toitū Te Whenua Land Information New Zealand under Creative Commons Attribution 4.0 International (CC BY 4.0).


Use with the 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
cd463bd0-514a-c96c-1587-d35be17c0fe3

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)
2022-08-09

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



Provided by

Access to the catalogue