I think it depends on the text and the OCR software. In my experience, one does much better at 300 or 400 DPI than 150, especially when there are footnotes or accents. And I personally would not accept less than 600 DPI as the original scan resolution for illustrations, even if the web version is only 75 DPI. R C (If anyone saw my handful of micro-card projects, those were scanned at roughly the equivalent of 130 DPI; even with resampling at 4x size and edge enhancement, the scans are very poor... and so was the OCR.) On 7/13/05, Keith J. Schultz <schultzk@uni-trier.de> wrote:
Hi Everybody,
I am enjoying this thread.
But, do not forget you only 144dpi for good scanning and OCR. Whether you believe or not even if the original is poor you may get scans and less errors at lower resolution. In general the more resolution the poorer OCR becomes unless you tweak the scans and or the OCR Software, so digital cameras will work fine for general OCR needs of PG.
With that said. Do not forget PG does want to create commerical quality or professional quality archives.
regards Keith.
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