NSW Imagery Theme

 Access APINSW Imagery ThemeNote: Export function is for the Mosaic Index onlyRaster format in currently not delivered via the Spatial Collaboration Portal.  For all Imagery enquires please Contact us via the Spatial Services Customer HubPlease NoteWGS 84 service aligned to GDA94This dataset has spatial reference [WGS 84 ≈ GDA94] which may result in misalignments when viewed in GDA2020 environments. A similar service with a ‘multiCRS’ suffix is available which can support GDA2020, GDA94 and WGS 84 ≈ GDA2020 environments.In due course, and allowing time for user feedback and testing, it is intended that the original service name will adopt the new multiCRS functionally.Imagery is the product created from the use of airborne, space borne or terrestrial sensors. These technologies image the surface of the Earth to allow for the visualisation of land surface features.Imagery provides an analytical source and contextual background for decision making and supports multiple applications including:

·               mapping

·               emergency services

·               natural resource management

·               geosciences

·               Sustainable human and land use development 

Imagery includes data sourced from satellite, aircraft and vehicle mounted sensors. These technologies have a range of capabilities that includes but is not limited to, the ability to record multispectral and hyperspectral data and produce products such as orthorectified mosaics and stereo-viewable imagery.Spatial Services current Imagery programs include:Airborne Digital Sensor ADS Imagery (2006 to present) - Spatial Services has a Digital Image Acquisition System (ADS80) from which it collects medium and high resolution orthorectified digital imagery across NSW.  Spatial Services Spatial Service’s standard imagery capture program covers the entire state of NSW. Standard coverage imagery is captured and processed at a 50cm Ground Sample Distance (GSD) and is available as either 5km x 5km image modules or mosaiced to the extent of a 1:100,000 mapsheet.Spatial Services town imagery program covers regional townships across the state of New South Wales. Town imagery is captured and processed at Ground Sampling Distance (GSD) of 10cm and is available as 1.25km x 1.25km image modules or mosaicked to the extent of the imagery capture.This product has been produced to identify visible land cover features and terrain to support Spatial Services along with local and state government programs, including Emergency Services. This product is used on a whole of government basis as a visible record of the landscape at a given point in time, allowing for comparative analysis to be carried out over different epochs.This product can be viewed on a number of Spatial Services web based viewing platforms:

SixMaps

Spatial Services Web Map Services:NSW Imagery  This should be used in conjunction with the below NSW Imagery Date Service. This will allow users to see the date of capture 

Stereo Viewable ADS imagery (2006 to present) - Airborne Digital Sensor Stereo Strips.This product must be requested direct from Spatial Services and requires specialist software to utilise.Emergency imagery - This is rapid response imagery over natural disasters such as Floods , Fire, Hail Damage etc. As it is impacted by the flying conditions at the time of capture and they go through an express processing method it is not the same product as the Standard and Town capture programs.As there is a range of different intellectual property that applies to each capture this imagery is on request basis.Second party aerial and satellite imagery - This covers a range of miscellaneous capture projects from “Sydney Conurbation” to full state satellite imagery captures.As there is a range of different intellectual property that applies to each capture this imagery is on request basis.Historical Aerial Photography (1930 to 2005)Historical Aerial Photo Images (HAP) - Spatial Services has a huge repository of digitised Historical Aerial Photography.  The collection has been acquired over a number of years from 1930 through to 2005. The imagery was originally captured using a variety of cameras including the Wild RC-5, RC-10 and Leica RC-30 cameras with a variety of lenses with focal lengths of 88mm, 153mm and 304mm.  Images were captured in monochrome or colour during this period at a range of scales ranging from 1:10 000 to 1:80 000. Images have been digitised from either the aerial film negatives or hard copy prints up 2000dpi resolution depending on the scanned medium.Historical Aerial Photo Enhancement Product (HAPE) - This is a Orthorectified product created from the Historical Aerial Photo Collection. A complete 100k coverage of individual photo frames was required for each project area for standard program capture. The Ortho rectification of individual photo frames with 60% forward overlap, that lie within and intersecting the relevant 100k map sheet. Spatial Services create the HAPE mosaics with a new process utilising Augmented Reality Modelling Software.This is an automated process using an Augmented Reality Modelling Software to produce a 3D models of an area from simple photographs. The Hybrid processing in this software enables the creation of reality meshes using Spatial Services archive of historical Air Photos, the image overlap and the photo centre points derived from the original Key Diagrams and flight reports.

From the Historical Aerial Photos and the “essential information” from the Key Diagrams we are able to create a 3d mosaic of the photo frames that we can flatten to a 2D ortho photo mosaic.All images are loaded into the reality modelling engines where they go through a triangulation process with context capture using the X and Y coordinates of the photo centre and the Z coordinate created from the Flying height and other essential information.

Once this has been done the system identifies thousands of tie points and creates the 3D photo Mesh. Once the photo mesh has been created it can be flattened into an Ortho Photo mosaic.

Both These products HAP and HAPE can be accessed via the new Historical imagery service.

Historical Imagery Viewer

Metadata

Type  

Esri Feature Service

Update Frequency  

Spatial Services captures and updates imagery from advice provided by stakeholders primarily through Imagery and Elevation NSW, a working group of the NSW Location Leadership Group.

Contact Details  

Contact us via the Spatial Services Customer Hub

Relationship to Themes and Datasets  

NSW Imagery Theme of the Foundation Spatial Data Framework (FSDF)  

Accuracy 

The horizontal accuracy of the imagery is dependent upon the resolution (GSD) of the image: ·    Horizontal accuracy of +/-2.5 x GSD (meters) at 95% confidence level on bare open ground using RMSE x 1.73.

Spatial Reference System  (dataset) 

Geocentric Datum of Australia 1994 (GDA94), Australian Height Datum (AHD)  

Spatial Reference System     (web service)  

EPSG 4326: WGS 84 Geographic 2D  

WGS 84 Equivalent To

GDA94  

Spatial Extent  

Full State

Standards and Specifications  

Metadata AS/NZS ISO 19115-2, ANZLIC Metadata Profile v1.1 and ISO 19139  http://www.anzlic.gov.au/resources/anzlic-metadata-profile

Intergovernmental Committee on Surveying and Mapping (ICSM) Guidelines for Imagery

Spatial Services. Imagery Products Specification and Description

Distributors  

Customer Experience & Insights, DCS Spatial Services 346 Panorama Ave Bathurst NSW 2795

Dataset Producers and Contributors  

DCS Spatial Services 346 Panorama Ave Bathurst NSW 2795