I suffered from similar issues and fixed the problem by adding a line to textord/colfind.cpp:
Between #endif // GRAPHICS_DISABLED and SetBlockRuleEdges(input_block); I added: input_block->noise_blobs.clear(); // remove noise blobs This will remove noise blobs during the segmentation of blocks and prevent noise blobs from being added to the text block around them. I think it is a dirty hack, but it will probably give you better results. Maybe we have to tackle this problem in a more in-depth solution in the future. Changing the constant const double kMinMediumSizeRatio = 0.25; to const double kMinMediumSizeRatio = 0.15; in blobbox.cpp also helped to improve the results. You can try to adjust that constant to your needs. Paul Am Donnerstag, 28. August 2014 10:04:33 UTC+2 schrieb 葉家忠: > > I use Tesseract to recognize the simplified chinese character > > Since some noise of the source image can't be removed, so I decide to fix > the source code to remove the incorrect result. > > Since the each of the chinese charactor size is fix-sized, so the nose can > be found easily because its size will be much smaller than a normal > character. > > I've tried to set the parameter "textord_heavy_nr" to true to remove the > noise, but it won't work because in some case it will remove some > importart parts of a chinese character which is quite necessary to form a > complete chinese character > > Can any one tell me how to fix the code that remove the result lastly > decided by Tesseract which size is smaller than specific blob size? > > I really thank you for helping~ > > > > ps: the attached file show 3 characters but it will be recognized as 4 > characters because of the noise. > -- 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 http://groups.google.com/group/tesseract-ocr. To view this discussion on the web visit https://groups.google.com/d/msgid/tesseract-ocr/adec96da-f019-44e0-9e04-d81f9de1aa50%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
