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Topic: TIFF to Hidden Text PDF
Conf: (P-PDF) Developers, Msg: 31790
From: aandi
Date: 12/19/2001 08:34 AM

Hidden text is no secret. You just set an invisible rendering mode in the text. This cannot be expressed in PostScript or the Windows GDI, so there is no way to generate hidden text by the "print" model, but is set with the Tr operator if you are generating PDF directly.

Of course, you might find other ways that are to you just as suitable but which do follow this model, e.g. white text behind the image.

But this isn't mainly about hidden text, as I see it. It is about OCR. Capture provides an SDK for doing OCR; Acrobat doesn't. OCR is not something you will probably want to develop yourself; most OCR programs are the results of many years development and some very extensive research. Still, I see you suggest you may have a way to do OCR separately.