•   Search
  •   Map
  •   Sign in

Hamilton 0.1m Urban Aerial Photos (2015)

Orthophotography in the Hamilton City Council area taken in March 2015. Coverage is of the Hamilton City urban area.


Imagery was captured for the ‘Hamilton City Council’ by Aerial Surveys Ltd, Unit A1, 8 Saturn Place, Albany,0632, New Zealand.


Data comprises:

•492 ortho-rectified RGB GeoTIFF images in NZTM projection, tiled into the LINZ Standard 1:1,000 tile layout

•Tile layout in NZTM projection containing relevant information.


The supplied imagery is in terms of New Zealand Transverse Mercator (NZTM) map projection. The products are tiled into NZTopo50 1:1,000 tiles. Please refer to the supplied tile layout shape file for specific details, naming conventions, etc.


Imagery supplied as 10cm pixel resolution (0.1m GSD), 3-band (RGB) uncompressed GeoTIFF. The final spatial accuracy is ±0.2m @ 95% confidence level in clear open spaces (2 sigma).


Index tiles for this dataset are available as layer [Hamilton 0.1m Urban Aerial Photos Index Tiles (2015)]( http://data.linz.govt.nz/layer/336 5)

Simple

Identification info

Date (Creation)
2015
Status
Completed
Point of contact
Role Organisation Electronic mail address
Point of contact

LINZ - Land Information New Zealand

info@linz.govt.nz

Spatial representation type
Grid

Spatial resolution

Equivalent scale

Denominator
1000
Topic category
  • Imagery base maps earth cover

Extent

N
S
E
W


Resource format

Title

*.xml

Date
Edition

Unknown

Resource constraints

Classification
Unclassified

Resource constraints

Use limitation

Released under Creative Commons By

Creative Commons Attribution 3.0 New Zealand

Link: http://data.linz.govt.nz/license/attribution-3-0-new-zealand/


Attribution Required for Copies:

"Copyright in this work is owned by Hamilton City Council"


Attribution Required for Derivative works:

"Copyright in the underlying dataset from which this work has been derived is owned by Hamilton City Council"

Access constraints
Copyright

Resource constraints

Use limitation

Released under Creative Commons By

Creative Commons Attribution 3.0 New Zealand

Link: http://data.linz.govt.nz/license/attribution-3-0-new-zealand/


Attribution Required for Copies:

"Copyright in this work is owned by Hamilton City Council"


Attribution Required for Derivative works:

"Copyright in the underlying dataset from which this work has been derived is owned by Hamilton City Council"

Access constraints
License

Resource constraints

Use limitation

Released under Creative Commons By

Creative Commons Attribution 3.0 New Zealand

Link: http://data.linz.govt.nz/license/attribution-3-0-new-zealand/


Attribution Required for Copies:

"Copyright in this work is owned by Hamilton City Council"


Attribution Required for Derivative works:

"Copyright in the underlying dataset from which this work has been derived is owned by Hamilton City Council"

Use constraints
Copyright

Resource constraints

Use limitation

Released under Creative Commons By

Creative Commons Attribution 3.0 New Zealand

Link: http://data.linz.govt.nz/license/attribution-3-0-new-zealand/


Attribution Required for Copies:

"Copyright in this work is owned by Hamilton City Council"


Attribution Required for Derivative works:

"Copyright in the underlying dataset from which this work has been derived is owned by Hamilton City Council"

Use constraints
License
Language
English
Character encoding
UTF8

Distribution Information

OnLine resource

https://data.linz.govt.nz/layer/53398-hamilton-01m-urban-aerial-photos-2015/

Resource lineage

Statement

Data Acquisition:

The aerial photography for this project was captured on 20 March 2015.


All photography was captured using Vexcel's digital UCLp camera and flown at 3850ft (1173m) flying height.


Data Processing:

All aspects of the data processing from imagery processing to DTM creation and ortho production

and product deliverables was unadertaken in-house by Aerial Surveys staff.


Map Projection:

All spatial data for this project provided in terms of New Zealand Transverse Mercator 2000 map

projection (NZTM2000) . The datum is New Zealand Geodetic Datum 2000 (NZGD2000). The height

datum is orthometric Auckland 1946 (sea level). The products are tiled into NZTopo50 map sheet

tiles as noted below.


Image Processing and Aerial Triangulation:

All imagery has gone through QA checks ensuring there is no cloud cover and cloud shadow. During

aerial acquisition the aircraft on-board GPS navigation data and ground base station data collected

and post processed. Imagery processed to Level 3 and checked for colour correctness/radiometry

and even tonal balance across each project area. The aerial triangulation brings together the GPS

data and imagery using a two part process which stitches the imagery together using tie point

matching for the relative orientation phase and observing ground control points for the absolute

orientation phase. A final report is generated to check RMSE values are within specification.


DTM Source:

The digital terrain model used for this project was derived from 2008 and 2010 LiDAR

DTM data. Outside the existing data we have collected a new DTM from the stereo imagery. The

DTM data is merged together seamlessly and accuracy is checked to meet the ortho imagery

specification.


RGB and Ortho Rectification Process:

Ortho rectification is the process of removing (from the image) the effects of camera tip/tilt and

displacement caused by terrain relief. During this process each frame is 'draped' over the terrain

model and the photograph then becomes 'scaled' and 'levelled' in terms of true ground coordinates.

The generation of seamlines between frames follow natural physical features such as ridges, valleys,

roads and rivers. The seamlines are used for the final ortho mosaic that stitches the imagery

together using feather mosaicking techniques. The ortho imagery is then extracted aligned to LINZ

1:1000 sheet tile layout.


Spatial Accuracy: ±0.2m @ 95% confidence level in clear open spaces (2 sigma)

Hierarchy level
Dataset
Other

dataset

Reference System Information

Reference system identifier
2193

Metadata constraints

Use limitation

Released under Creative Commons By

Creative Commons Attribution 3.0 New Zealand

Link: http://data.linz.govt.nz/license/attribution-3-0-new-zealand/


Attribution Required for Copies:

"Copyright in this work is owned by Hamilton City Council"


Attribution Required for Derivative works:

"Copyright in the underlying dataset from which this work has been derived is owned by Hamilton City Council"

Access constraints
Copyright

Metadata constraints

Use limitation

Released under Creative Commons By

Creative Commons Attribution 3.0 New Zealand

Link: http://data.linz.govt.nz/license/attribution-3-0-new-zealand/


Attribution Required for Copies:

"Copyright in this work is owned by Hamilton City Council"


Attribution Required for Derivative works:

"Copyright in the underlying dataset from which this work has been derived is owned by Hamilton City Council"

Access constraints
License

Metadata constraints

Use limitation

Released under Creative Commons By

Creative Commons Attribution 3.0 New Zealand

Link: http://data.linz.govt.nz/license/attribution-3-0-new-zealand/


Attribution Required for Copies:

"Copyright in this work is owned by Hamilton City Council"


Attribution Required for Derivative works:

"Copyright in the underlying dataset from which this work has been derived is owned by Hamilton City Council"

Use constraints
Copyright

Metadata constraints

Use limitation

Released under Creative Commons By

Creative Commons Attribution 3.0 New Zealand

Link: http://data.linz.govt.nz/license/attribution-3-0-new-zealand/


Attribution Required for Copies:

"Copyright in this work is owned by Hamilton City Council"


Attribution Required for Derivative works:

"Copyright in the underlying dataset from which this work has been derived is owned by Hamilton City Council"

Use constraints
License

Metadata

Metadata identifier
05bdec93-647d-d9c0-2135-f6bd5873fa5f

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

LINZ - Land Information New Zealand

info@linz.govt.nz

Type of resource

Resource type
Dataset
Name

dataset

Date info (Revision)
2016-05-16

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
Read here the full details and access to the data.


  •   About
  •   Github
  •