Recurring Orthophotography and Oblique Imagery Services

The Vendor is required to provide subscription-based, recurring orthophotography, oblique and derivative data as part of the government’s spatial data cooperative program (SDCP).
- Provide early access to the oblique imagery, via a web application within 2 weeks of the individual flight days.
- Metadata
• Deliverables must include metadata imbedded pixels detailing relevant information, i.e. data quality, spatial reference, attribute information, acquisition dates, etc.
• Metadata must describe the method of ortho imagery process.
• Deliverables shall be made available in accordance to the federal geographic data committee standard and file format.
- Orthophotography imagery
• Data collected must be in compliance with the federal geographic data committee requirements.
• Flights must be at an optimum altitude to collect 6” pixel resolution imagery or finer.
• Must include the time and date flown for all image files.
• Provide true color imagery of the entirety of the determined project area.
• Provide an accurate top-down view that is rectified to align to a map grid and must be easily integrated into a GIS database.
• Must be ortho-rectified using a suitable digital elevation model to minimize feature displacement and loss of features along mosaic lines.
• Shadows cast by building lean in high-density urban environments shall be kept at a minimum.
• Images must be free from areas that produce reflection (pools, buildings with metallic roof, etc.).
• Imagery shall be collected during minimal shadowing conditions. 
• Image acquisition shall occur when the sun angle is greater than 30 degrees above the horizon.
• Tiles shall be edge matched and color balanced to minimize tile seams and improve image quality.
• Must use “best practice industry standard” for providing color ortho-photo mapping, and must provide agency with specific information regarding standards used. - Oblique imagery
• Must be able to provide high-resolution oblique images characterized by fine detail and sharpness rather than blurry and inexact.
• The requirements shall include high resolution oblique imagery, at a minimum of 3-inch resolution for areas within densely populated, city and residential areas and a minimum of 8 inches elsewhere.
• Four-way oblique imagery covering project area must be captured at the contracted ground sampling distance (GSD).
• Images must be captured from a north, south, east and west direction to provide a 360-degree view of every property and parcel and at a 40-to-45-degree angle.
• Each pixel of an image must be geo-referenced.
• Oblique images must meet the same horizontal and vertical accuracy that is in the source data used in processing them, i.e. Orth photo, DEM (digital elevation model).
• Provide oblique imagery from which measurements can be directly taken on a computer screen.
• Oblique imagery must be geo-referenced in such a way that allows for the overlay of all GIS data.
- Contract Period/Term: 5 years
- Pre-Proposal Conference Date: June 5, 2025
- Questions/Inquires Deadline: June 5, 2025