PLS gradient has edge artefacts

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
cpp
Domain
computer-vision

Research direction

Start by reviewing the failing PLS-prior tests and discussion in pull request #695, along with the linked difference image. Compare the PLS setup using the uniform anatomical image and randomized density with the QP and RDP cases. Done means the edge artefacts are resolved and the tests in #695 pass.

Written by the indexing model from the issue text.

Description

bug

Tests in #695 fail for the PLS prior because of edge artefacts. Here is a difference image. PLS uses a uniform 1's anatomical image and the same randomised density (between 0 and 1 voxel values) as QP and RDP
image

Originally posted by @robbietuk in https://github.com/UCL/STIR/pull/695#issuecomment-698273995

Dominant language
C++
Stars
160
Forks
113
Avg merge
12d 15h
Merged PRs (30d)
1

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