Thank you, I will do that for b.jpg. But like I said, both of those images have the same .dpi value in the file, yet a.tiff OCRs perfectly and b.jpg is horrible. So I'm not sure which algorithm I would employ at runtime to determine if I should up-scale an image or not. It seems you can't simply rely on the exif data. Not sure what the best approach is...
On Thursday, December 13, 2012 8:32:04 PM UTC-5, Quan Nguyen wrote: > > Width and height are image dimensions but are incorrectly labeled as > resolution in some applications. Since your images are 96 DPI, tripling > their resolution should work better. > > On Wednesday, December 12, 2012 8:26:51 AM UTC-6, occorled wrote: >> >> I was always confused about DPI when it comes to images (versus print). >> I thought, it's all about (w x h) resolution, not DPI, right? I found this >> page to be informative (and funny) http://www.dpiphoto.eu/dpi.htm. >> >> So basically, I simply scale the image larger right? Perhaps double or >> triple the resolution of "b.jpg", right? >> >> On Tuesday, December 11, 2012 10:12:05 PM UTC-5, Quan Nguyen wrote: >>> >>> Rescaling to 300 DPI will produce much better results for the images. >>> >> -- You received this message because you are subscribed to the Google Groups "tesseract-ocr" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/tesseract-ocr?hl=en
