Extract Greek letters from a PDF Document

[mohitrobo]

Text extraction from a PDF file:-
1.) Used the syntax Page.get_text() with the clip to define the rectangle to extract the text.
2.) The PDF text had some mathematical equations with greek letters.
3.) The returned text returns text with ? in place of the greek letters.

How to resolve the issue?

[JorjMcKie]

Not possible unfortunately. The font used for the letters is accompanied with no backtranslation info (usually stored in /ToUnicode - the CMAP table).
All you could do is OCR-ing those text pieces. How such "partial" OCR-ing works is explained here.