Try reducing the images, e.g.: convert -resize 25% ears.png ears2.png
art From: [email protected] <[email protected]> On Behalf Of [email protected] Sent: Tuesday, August 14, 2018 6:51 AM To: tesseract-ocr <[email protected]> Subject: [tesseract-ocr] why such simple word can't be recognized? I use opencv to extract chars from image and combine them together, but tasseract failure to recognize it. I have tested with paramters "-c tessedit_char_whitelist=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz,.-\\'" "-psm 7" and "-psm 8", still no lucky. please see attachment, ears.png but some others were successful, like godmother.png. who could teach me, please. -- You received this message because you are subscribed to the Google Groups "tesseract-ocr" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]<mailto:[email protected]>. To post to this group, send email to [email protected]<mailto:[email protected]>. Visit this group at https://groups.google.com/group/tesseract-ocr. To view this discussion on the web visit https://groups.google.com/d/msgid/tesseract-ocr/8744457a-85cf-4359-b82e-b68597e28d55%40googlegroups.com<https://groups.google.com/d/msgid/tesseract-ocr/8744457a-85cf-4359-b82e-b68597e28d55%40googlegroups.com?utm_medium=email&utm_source=footer>. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "tesseract-ocr" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/tesseract-ocr. To view this discussion on the web visit https://groups.google.com/d/msgid/tesseract-ocr/YQXPR0101MB1702FCB7324DA48539A71D92DC3C0%40YQXPR0101MB1702.CANPRD01.PROD.OUTLOOK.COM. For more options, visit https://groups.google.com/d/optout.

