geelong_2017apr05_air_vis_10cm_mga55

dataset
Dataset: geelong_2017apr05_air_vis_10cm_mga55 Assembly: Mosaic
 
Citation proposal Citation proposal

geelong_2017apr05_air_vis_10cm_mga55

Department of Transport and Planning

Description

Title
geelong_2017apr05_air_vis_10cm_mga55 
 
 

Temporal

Time period
2017-04-052017-06-04 
 
 

Spatial

Horizontal Accuracy
0.3m 
Code
MGA Zone 55 GDA94 
 
 

Format

Title
ECW,TIFF 
 
 

Contacts

  Point of contact

  Custodian

 
 

Keywords

Topic category
  • Imagery base maps earth cover
 
 

Resource Constraints

Use limitation
General 
Classification
Unclassified 
 
 

Lineage

Description
A3 Digital Mapping Camera System: Dual CCDs. Two 300mm lenses. Fast compression and storage unit. Dual frequency GPS. Weight 38 kilograms. Dimensions 50cm x 60cm x 60 cm. Frames are exposed in a cross-track direction, providing a FOV of up to 106 degrees. High resolution vertical and oblique images are captured simultaneously. A3 LightSpeed Processing System: PC server. A3 LightSpeed Software. The system solves the Aerial Triangulation and bundle adjustment automatically. Manual geo-referencing may be carried out. Automatic processing of DSM, DTM and orthophoto. A3 Image Processing Workflow: Flight planning. Aerial image acquisition. Download imagery and metadata from the storage unit onto the processing system. Inspection of captured imagery. Combine and index the imagery with post-processed GPS. Aerial triangulation and adjustment to ground control. Preparation of a DTM. Editing or validation of the DTM. Orthophoto creation. Image Tiling. Colour profiling. Quality Assurance. Editing of imagery to produce a homogeneous product. 
 
 

Metadata Constraints Metadata Constraints

Classification
Unclassified 
 
 

Quality

Attribute Quality
Positional Accuracy
Conceptual Consistency
Comments
Data meets expected file naming and band combination specifications 
 
Missing Data
Comments
The Geelong Spring capture does not cover all of the LGA as the Melbourne Spring epoch which was captured earlier covers the eastern edge of Geelong LGA. The Geelong mosaic has therefore been constructed using photography from both Melbourne and Geelong Spring epochs. Epoch 3 (Autumn) does not cover the full extent of the Geelong LGA as the whole shire was unable to be captured. 
 
Excess Data
 
 

Acquisition Info

Platform Type
Aerial 
Assembly
Mosaic 
Tile Size
1 km 
 
 

Raster Data Details

Raster Type
Aerial Photo 
X Pixel Resolution (cm)
10cm 
Y Pixel Resolution (cm)
10cm 
Seamlessness
Full 
Number of Bands
3 
Band List
1,2,3 
Resampling Kernel
Not Entered 
Rectification Type
FastLook 
Platform Name
Fixed Wing Aircraft 
 
 

Survey Details

Sensor

Title
VisionMap A3 - Edge 
Identifier
Aerial

Type
Digital Photo 
 

Aerial Survey Details

Runs
21 
Run Orientation
E-W and N-S 
Side Overlap
58 
Forward Overlap
56 
Flying Height Unit
asl feet 
Flight Height
13250 
 
 


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