tesseract OCR in iphone application

问题:

I am using tesseract open source engine for OCR to read text from image. But I didn't get 100% result for a single time. Please give your suggestions about quality improvement for OCR using tesseract. Thanks

回答1:

here is how to get best result from tesseract Please make sure that you have done preprocessing on image. OVR will produce best results for the images which have following properties:

1. fix DPI (if needed) 300 DPI is minimum
2. fix text size (e.g. 12 pt should be ok)
3. try to fix text lines (deskew and dewarp text)
4. try to fix illumination of image (e.g. no dark part of image
5. binarize and de-noise image

https://groups.google.com/forum/?fromgroups=#!topic/tesseract-ocr/g5aE_OvgyTU