GE D690 flipped images
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- Dominant language
- C++
- Stars
- 160
- Forks
- 113
- Avg merge
- 12d 15h
- Merged PRs (30d)
- 1
Description
When forwarding projecting the same image with either STIR GED690 projector or the one from GE Toolbox, I don't get the same result. In order to obtain the same result, I need to first flip the x axis then exchange x and y axis, before using STIR projector.
Obviously this is connected with issue #675 and comes from the different conventions in STIR / GE.
Any chance this is connected to the value of the intrinsic tilt (I don't know what this refers to) which is marked as TODO in the code?
https://github.com/UCL/STIR/blob/master/src/buildblock/Scanner.cxx#L376
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with src/buildblock/Scanner.cxx around line 376 and review the intrinsic tilt TODO, then compare the axis conventions used by STIR and the GE D690 or GE Toolbox projector. Use issue #675 for related context. Done means identifying the source of the flipped-image discrepancy and defining the change needed for consistent projection results.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- computer-vision
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100