Use of image from --allow-enhancement option in OCR-D workflow

[sjscotti]

Hi
A question. Is the --allow-enhancement option resultant image intended to be used in an OCR-D workflow? In some cases, I believe resultant image has dimensions that differ from the dimensions of the input image. So if it is intended to be used in OCR-D, what is the suggested workflow (and the commands & parameters) that preserves the overlaying of the ocr results with the image?
Thanks!

[vahidrezanezhad]

@sjscotti
As long as I know, no. The enhanced imaged in the case of --allow-enhancement can not be applied by OCR-D workflow (@kba ).

[kba]

A question. Is the --allow-enhancement option resultant image intended to be used in an OCR-D workflow?

No, we currently do not use the intermediate results of eynollah, only the resulting PAGE-XML with the assumption that the original image (dimensions) remains unchanged.

[sjscotti]

Do you think that the enhancement approaches used in eynollah should be replicated outside of it to be used in an OCR workflow, or do you think the OCR-D workflow enhancement steps produce a better quality starting image to do OCR on?

[vahidrezanezhad]

Do you think that the enhancement approaches used in eynollah should be replicated outside of it to be used in an OCR workflow, or do you think the OCR-D workflow enhancement steps produce a better quality starting image to do OCR on?

The impact of enhanced image on OCR is not assessed yet. But I think for documents with low quality the enhanced images may improve OCR performance.

[vahidrezanezhad]

https://github.com/qurator-spk/eynollah/blob/updating_docs/docs/models.md