Published date: 10 November 2022

This notice was replaced on 18 January 2023

This notice does not contain the most up-to-date information about this procurement. The most recent notice is:

Awarded contract (published 18 January 2023)

Closed opportunity - This means that the contract is currently closed. The buying department may be considering suppliers that have already applied, or no suitable offers were made.


Contract summary

Industry

  • Mapping software development services - 72212326

  • Data analysis services - 72316000

Location of contract

England

Value of contract

£10,000 to £24,999

Procurement reference

NCEA1.1_Normalisation

Published date

10 November 2022

Closing date

28 November 2022

Closing time

5:30pm

Contract start date

7 December 2022

Contract end date

31 March 2023

Contract type

Service contract

Procedure type

Open procedure (below threshold)

Any interested supplier may submit a tender in response to an opportunity notice.

This procedure can be used for procurements below the relevant contract value threshold.

Contract is suitable for SMEs?

Yes

Contract is suitable for VCSEs?

Yes

Description

Expertise in remote sensing / earth observation essential.

This project will investigate current best practices and potential impacts of image normalisation in the development of Spring and Autumn satellite mosaic creation used within the Living England workflow for segmentation and habitat classification. The current mosaicking process includes a "Swiss-cheese" method for creating cloud-free mosaics, which involves removing any cloudy or shadow pixels and stacking the imagery to create the mosaic. The primary image is taken as the least cloudy image, with any cloud or shadow gaps filled by subsequent images, ordered from least to most cloudy. However, differences in acquisition timing and ground conditions can result in radiometric differences between the stacked images, the impact of which has not been quantified within the Living England process. There is potential that normalising the input imagery prior to mosaicking will result in improvements in the segmentation and aid comparisons of the segmentations derived from different mosaics. This could result in further improvements to how these maps can be used in assessing habitat change in extent over time due to the comparisons of satellite imagery from different seasons and years. The normalising of imagery values may also impact upon the habitat classification process, as these are used to derive zonal statistics within segment objects and are modelled using a random forest classification model. As a result, normalising the imagery within the mosaicking process may impact upon the overall accuracy of the habitat classification process.

More information

Attachments

Additional text

Your response should be returned to the following email address by:
Email: Anne.Stefaniak@naturalengland.org.uk
Date: 28/11/2022
Time: 17:30
Ensure you state the reference number and 'Final Submission' in the subject field to make it clear that it is your response.

About the buyer

Contact name

Anne Stefaniak

Address

Apex Court, City Link
Nottingham
NG2 4LA
England

Email

anne.stefaniak@naturalengland.org.uk