Saving during Ground Truth Production is confusing

[b2m]

I am in the Ground Truth Production step in OCR4All and switching between the modes Segmentation, Lines and Text.

When I forget to press save between switching the modes the saved data becomes inconsistent resulting in data loss.

Example steps to reproduce (reduced to minimum):

1. Load Project
2. Perform Preprocessing
3. Go to Ground Truth Production
4. Add segments (no save)
5. Add lines (no save)
6. Add text and save
7. Check Page XML => no Page XML created.

Expectation: I would expect either a automatic save or forced save (changes present) between mode switching. Alternatively pressing save e.g. in Text mode should also save changes from Line and Segment mode.

Version: Larex was used via docker and the current ls6uniwue/ocr4all:latest.

[maxnth]

Thanks for these bug reports, they're really helpful as most users/testers had semi automatic use cases and most likely just used the Lines tab for altering/removing/adding lines after the automatic line segmentation was applied, so these kind of bugs flew under our radar until now.

This specific bug is triggering because LAREX – for some reason – expects a set reading order for text lines and is crashing when no line reading order exists. This obviously shouldn't happen and I'll look into fixing this ASAP.

[b2m]

Well, I also would prefer (semi-)automatic use cases =)

But to understand how things work (or why they are not working) you sometimes have to try simple things.

Also most of the Tools (OCR4All, OCR-D*) are developed with a focus on libraries and therefore books. In the archive we have a more diverse selection of material to process.

[b2m]

I was trying to reproduce the error using the current ls6uniwue/ocr4all:nightly docker image containing

• OCR4All: 0.5-RC2
• Larex: 0.5-RC3

As described the reported bug is no longer reproducible, and therefore considered fixed.

Thank you =)