Re: Errors that might be decreasing my OCR precision

[p.athana...@e-rda.gr]

Hi everyone,

I know this is quite an old topic by now, but this question still stands and I saw no reason to create a new one for it.

I use tesseract 3.0.2 (with leptonica 1.67, which was the recommended at the time of the installation) on Centos 6.5. I convert large pdf files to seperate page-PNGs, then use tesseract to scan for specific keywords.

A few pages have given me the following errors (the errors always come together):

Error in boxClipToRectangle: box outside rectangle
Error in pixScanForForeground: invalid box

These pages seem to be OCRed correctly, with more or less the same precision as the rest of the pages (~96% characters recognised), but I have only found three pages with these errors so my sample is not very significant. 

What do these errors mean?

Do these hint to a user error?

Is there any possibility they can mean a loss of precision?

Thanks in advance for the help. :)

[zdenko podobny]

As always - if you do not provide sample image for your problem nobody will look at the problem...

Zdenko

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[Daniel]

Hey, I have the same two errors, in a image that seems pretty readable.

I have Tesseract v3.02.02 with Leptonica

Preprocessed image is attached.