Aerial Photography Imagery and Height Data Procurement Pre-market - - PowerPoint PPT Presentation

Aerial Photography Imagery and Height Data Procurement Pre-market engagement webinar 5 September 2019

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• n the right hand side
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• Please use the question box for questions during the Q&A session
• These slides and the Q&A will be circulated after this webinar

WebEx

Agenda

Time Item Duration 11:00-11:10 Introducing Geospatial Commission Contracts Team 10 mins 11:10 - 11:40 Overview of Aerial Photography and Height Data Requirements

• Imagery
• Height

30 mins 11:40 - 11:50 Next steps 10 minutes 11:50 - 12:00 Time to ask questions (all questions and answers will be published) 10 minutes

• Test feasibility with market
• Give an overview of the requirements for opportunity RM6176
• Provide an opportunity for questions and answers
• Invite you to engage in the next steps - feeding back on the draft specification and licensing terms and

conditions

Purpose of this pre-market engagement

• Aerial imagery and height data - all public sector organisations in England, Scotland, and Wales
• Imagery data is being procured for a range of requirements across the public sector, examples include:
• Imagery layer for planning critical operations (emergency response to incidents, civil contingency

planning)

• Assessing land development proposals
• Height data is being procured for a range of requirements across the public sector, examples include:
• Modelling terrain for response in the event of a flood
• Elevation models in urban areas
• Web services - for accessing the data online

Introducing the Requirement

The specification will feature three aerial photography imagery products with the following mandatory requirements:

• 100% GB coverage
• Ortho-rectified
• Colour balanced
• All imagery should be no older than three years
• Coastal coverage and inter-tidal areas
• RICS 2001 practice standard for vertical aerial photography and digital imagery
• 100% temporal compatibility between the three data sets

Imagery Data Specification: Mandatory requirements

RGB 25cm resolution RGB 12.5cm resolution Colour Infrared 50 cm resolution

The specification will feature three aerial photography imagery products with the following mandatory requirements, unique to the type of imagery:

Imagery Data Specification: Mandatory requirements

• RGB bands
• Mean High Water Line to

be provided on request

• Raster Format
• Colour-balanced
• Ortho rectified
• RGB bands
• Mean High Water Line to

be provided on request

• Raster format
• Colour-balanced
• Ortho rectified
• Near infrared, visible as

red

• Green, visible as blue
• Red visible as green
• Ortho rectified

RGB 25cm resolution RGB 12.5cm resolution Colour Infrared 50 cm resolution

The specification will feature three aerial photography imagery products with the following highly desirable requirements:

• On request, non-colour balanced imagery and stereo scans should be provided
• 5cm resolution for all urban areas by the end of the contract period.
• All imagery should be no more than two years old
• Certain areas will be prioritised for capture at the request of the authority

Imagery Data: Highly Desirable Requirements

RGB 25cm resolution RGB 12.5cm resolution Colour Infrared 25 cm resolution

The specification will feature height data products with the following mandatory requirements:

• 100% GB Coverage
• Raster and vector formats
• Temporal currency with aerial imagery
• Coverage of all GB land features
• 100% attribute/metadata assigned to each feature
• 2m cell size for the DSM
• 5m cell size for the DTM

Highly desirable - DTM at 2m cell size

Height Data Specification: Mandatory Requirements

Digital Surface Model (DSM) Digital Terrain Model (DTM)

• UK Gemini 2.2 standard (and updates to this standard)
• Individual metadata should accompany each tile, and this will be provided as a vector layer.
• Cut lines within tiles should feature in vector layer.
• Tile reference
• Flight line
• Time and date of capture
• Image footprints
• Processing applied to data
• Ortho-accuracy
• RMSE (positional accuracy)

Metadata - Mandatory Requirements

• Data Capture programme and quality assurance plan
• All data to be made available in the year within which it is captured
• Accessible to all public sector organisations online for download
• Hard media orders (DVD/hard drive)
• All orders to be fulfilled within 10 working days
• Data relating to specific areas or GB as a whole to be provided at licensee’s request
• Options for both full supply and change only update

Highly Desirable

• Provision of updates automatically when a licensee’s area of interest is re-captured
• All orders fulfilled within 7 working days

Data delivery - Mandatory Requirements

For all aerial imagery and height data products:

• Web services (Web Map Services, Web Feature Services, Web Map Tile Service) that all organisations can

use to access the data

• Compliant with Open Geospatial Consortium Interface standards
• Including Gemini 2.2 compliant metadata as a vector layer (and updates to this standard)

Web services - Mandatory Requirements

• We will email everyone documents by the end of the day today (5th September):
• Draft contract specification
• Draft licensing terms
• Template on which to provide comment
• You will have until the end of Friday 13th September to review the documents, complete the template and

return it to us at gccontractsteam@cabinetoffice.gov.uk

• These slides and the Q&A will be published on the opportunity page for RM6176
• If you have further questions, please send them via email when you return the template. We will publish all

answers on the opportunity page w/c 16th September. All questions must be sent in by Friday 13th September.

• We will incorporate feedback into the final specification. We are planning to launch the invitation to tender at

the beginning of October.

Next steps

Q&A

Answering your questions...