Winfield 2017 Orthophoto Imagery at 6cm Resolution

Orthorectified aerial imagery captured on 2017-05-16 using a VisionMap A3-Edge sensor with a 300mm focal length. The dataset provides RGB orthophoto tiles with a spatial resolution of 6 cm and a stated accuracy of +/- 3 pixels at 68% confidence. Imagery was acquired from a flying height of 2440m with 55% forward and 60% side overlap.

Use Cases

• Create high-resolution base maps for urban planning using 6 cm spatial resolution orthophoto tiles.
• Analyze ground-level feature changes over time by comparing this 2017-05 6cm imagery with newer acquisitions.
• Assess spatial accuracy for ground features by applying the +/- 3 pixel at 68% confidence metric.
• Integrate 1km x 1km GeoTIFF tiles as backdrop layers for other spatial datasets in Web Mercator Auxiliary Sphere projection.

Strengths

• High 6 cm spatial resolution for detailed ground feature observation.
• Explicit spatial accuracy metric of +/- 3 pixels at 68% confidence for ground-level features.
• Imagery was orthorectified using a DTM and commercial photogrammetric software for geometric correction.
• Specific acquisition parameters: 2440m flying height, 55/60% overlap, and 2017-05-16 date.

Limitations

• Spatial accuracy is reduced for elevated structures like rooftops and tree canopies due to relief displacement.
• Accuracy is explicitly stated as reduced in areas of dense vegetation.
• Dataset is temporally limited to a single acquisition date in May 2017.

Provenance

Source

Bundaberg Regional Council Open Data, author brc_gis.

Collection Method

Aerial imagery captured via VisionMap A3-Edge sensor and processed with commercial photogrammetric software.

Time Range

2017-05-16

Freshness

null

Geography

Winfield region (specific area implied by title).