New to command line and tesseract. Errors for PDF

[Jacob Stoker]

Hello tesseract-ocr world!

So I'm running tesseract. I have everything installed as far as I can tell. I'm on the El Capitan version.

I run the command:

tesseract mm.pdf mm pdf

hoping to take the file "mm.pdf" and ocr the file into a searchable PDF. I get an error: pixReadMem: size < 12

I assume this means that the text wasn't large enough? Do I just have to rescan the document with different settings?

For my own curiosity, how does tesseract know where the file is in the first place, given that the command was so short?

[zdenko podobny]

pdf (mm.pdf) is not image file. It is document file. 

Tesseract accept as input only image files (tiff, png, jpeg... based on your leptonica build)

Zdenko

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