How to detect and remove repeated headers/footers from PDF pages?

Hi, thank you again for the amazing work on Docling!

I'm working with a large number of PDF documents that have consistent headers and footers on every page. These headers/footers often include logos, page numbers, or section titles — and in my case, Docling identifies them as images and saves them as separate elements.

### My Question:
Is there a recommended way in Docling to **detect and remove repeated headers and footers** across pages?
Ideally, I would like to:

- define a fixed vertical area (e.g. top/bottom 5% of the page) to ignore during processing, **or**
- enable some kind of content de-duplication across pages (like comparing bounding boxes or hashes of images/text blocks), **or**
- configure Docling to treat those areas differently (e.g. exclude them from output, or mark them as low-priority).

I found a related issue in the tracker, but it seems there was no concrete solution offered yet.
The related issue : [Elimination of Document Header and Footers](https://github.com/docling-project/docling/issues/1272#top)
But my pdf's header and footer are **images**, so this code didn't work at all.
I'm wondering if there’s any internal option or upcoming feature for this kind of layout-level filtering?

Any suggestions or best practices would be greatly appreciated!

Thanks again for all your hard work and this fantastic tool.