Jina Lu wrote:Do you know any lightweight java ocr library that could tell if provided image has text or not? I don't need text extraction at the moment.
Well, this page lists quite a few. Also, Sourceforge comments about Java OCR seemed generally favourable, other than the lack of documentation; the author has written a small blog here. You might also try this, which appears to be a Java port for Tesseract - which also seems to be highly thought of - but how much it lets you do I have no idea.
I hate to say, but the fact is that all of this is kind of "bleeding-edge" stuff so, judging from your other post, you may find yourself on the final frontier, boldly going where no man has gone before.
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