Winfield 2020 Orthophoto Imagery with 6 cm Resolution

Orthophoto imagery of Winfield captured on November 5, 2020, consisting of 66 RGB images. The dataset provides a 6 cm spatial resolution raster corrected for terrain relief, suitable for use as a map backdrop.

Use Cases

• Analyze ground-level feature changes using orthorectified imagery with 6 cm spatial resolution.
• Assess spatial accuracy limitations for elevated structures like rooftops and tree canopies as noted in the data limitations.
• Integrate orthophoto tiles, referenced by SW corner coordinates (e.g., SW_123000_4567000_1km), as a base layer for other spatial data in Web Mercator projection.

Strengths

• High 6 cm spatial resolution for detailed ground-level observation.
• Imagery is orthorectified, combining photographic detail with geometric map qualities.
• Contains 66 individual RGB images captured with a 300 mm focal length sensor.

Limitations

• Spatial accuracy is reduced for elevated structures and in areas of dense vegetation due to relief displacement.
• No existing ground control was held over the site, which may affect absolute positional accuracy.
• Limited temporal coverage from a single acquisition date in 2020.

Provenance

Source

Bundaberg Regional Council Open Data, author brc_gis.

Collection Method

Aerial imagery captured with an A3 35 sensor at 8300 feet, processed via Visionmap Lightspeed rectification.

Time Range

2020-11-05

Freshness

null

Geography

Winfield area, specific tile coordinates provided (e.g., SW_123000_4567000_1km).