Explanation

Hello,
First of all, thanks for your works, it's a very helpful library.

I am not able to extract images from PDF generated with OnlyOffice :
B2.pdf

After looking into the PDF structure, it seems that the image in this PDF page, is contained inside a Tiling Patterns object, which can't be handled by "_page._get_ids_image" nor "_page._get_image".

I've took a look at PDF standards and it's specified that Tiling Patterns can be made of images so it's not an OnlyOffice issue.

I don't have read completely the standards about Patterns, but once this is done I'd like to make a proposition to at least be able to retrieve images from them, so when we try to get images from a page, it also considers Patterns.

What do you think about it ?

Have a nice day !