Childers 2020 Aerial Orthophotos at 6cm Resolution

227 RGB aerial images of Childers, captured on 2020-08-26 with a 300mm focal length sensor from 8300 feet. The imagery has been orthorectified into a digital orthophoto mosaic with a spatial resolution of 6 centimeters and a stated spatial accuracy of 3 pixels at 68% confidence. The data was produced by the Bundaberg Regional Council using Visionmap Lightspeed rectification processes.

Use Cases

• Generate high-resolution base maps for urban planning by overlaying other spatial data on the 6cm resolution orthophoto mosaic.
• Assess ground-level spatial accuracy for feature extraction by referencing the RMSE values of 0.085m in X and 0.050m in Y to existing control.
• Analyze land cover in open areas, noting that spatial accuracy is reduced in regions of dense vegetation as stated in the limitations.
• Rectify other aerial imagery using the documented rectification surface, Childers_5m_Ortho_DTM.img.

Strengths

• High spatial resolution of 6 centimeters per pixel.
• 227 source images captured with 56% forward and 65.5% side overlap for comprehensive coverage.
• Quantified spatial accuracy: RMSE values of 0.085m in X and 0.050m in Y to existing ground control.

Limitations

• Spatial accuracy is relevant only for ground-level features; elevated structures like rooftops and tree canopies are affected by relief displacement.
• Accuracy is explicitly reduced in areas with dense vegetation.
• Single acquisition date limits temporal analysis or change detection over time.

Provenance

Source

Bundaberg Regional Council Open Data, author brc_gis.

Collection Method

Aerial imagery captured with an A3 35 sensor, orthorectified using Visionmap Lightspeed processes and a 5m DTM.

Time Range

2020-08-26.

Freshness

Acquisition date is 2020-08 26; metadata was last updated in 2026.

Geography

Childers, Australia, with tile coordinates referencing a SW_123000_4567000_1km grid.