No problem. Not sure I understand what you mean by detect points - a point to me is an (x, y) coordinate. Do you mean space? In any case, Tesseract is not going to do anything like that I think - you will need to perform image preprocessing to do that using Open CV or something.
On 8 January 2015 at 16:02, Gokcer Gunes <[email protected]> wrote: > And i did threshold too and i got same results with you for this inputs > ,but for some other inputs threshold causes them to recognize wrong such as > * recognizing as ' .My images recognizing great for single line and with > 1-2 mistake for multiple lines so i need to solve that.Thanks for great > response and i will be very happy if you can return me ever got idea what > causes that problem:).And also a last thing can i detect points between > lines with tesseract to seperate image into multiple single line image? > > 2015-01-08 17:56 GMT+02:00 Allistair <[email protected]>: > >> :) I hear you, I do. From the input image perspective I looked at the 2 >> Kaliko words and they match at the pixel level. Some part of Tesseract's >> internal classification system is falling over a bit here, I cannot tell >> you why, I can only say that OCR is not a perfect technology. It works on >> machine learning and classification of probabilities. What seems simple to >> us is not necessarily so to the OCR engine. It could be that by the time it >> gets to the 2nd Kaliko it thinks it has improved the 'l' recognition from >> the previous text to be a '1' - Tesseract has this adaptive classifier - >> but I am only guessing, maybe others have better ideas. >> >> On 8 January 2015 at 15:24, Gokcer Gunes <[email protected]> wrote: >> >>> and also why is that? i mean at 3. line there is both KalikoImage which >>> is same,but first is correctly translated to text and second one is with >>> one mistake >>> >>> 2015-01-08 17:17 GMT+02:00 Allistair <[email protected]>: >>> >>>> It works for me with just the threshold and no scaling (however, there >>>> is an error in the 2nd Kaliko where the l is misrecognised as a 1): >>>> >>>> https://dl.dropboxusercontent.com/u/523401/codethres.png >>>> >>>> --- >>>> >>>> Memorystream memstream = new MemoryStream(); >>>> >>>> bitmap.Save(memstream, System.Drawing.Imaging.ImageFormat.Png); >>>> >>>> Kalikolmage imgklk = new Ka1ikoImage(memstream); >>>> >>>> >>>> On 8 January 2015 at 14:22, Gokcer Gunes <[email protected]> wrote: >>>> >>>>> Yeah with more size it works better and better but it takes more time >>>>> also thats why im only scaling 2x around.And can i ask did you try with >>>>> only threshold or threshold+scaling >>>>> >>>>> 2015-01-08 16:16 GMT+02:00 Allistair <[email protected]>: >>>>> >>>>>> Oh, I also scaled the image up to 2000px wide. Larger images often >>>>>> work better with Tesseract so a pre-filter or sampling up can help. >>>>>> >>>>>> On 8 January 2015 at 14:16, Allistair <[email protected]> wrote: >>>>>> >>>>>>> This is the image I am providing to Tesseract >>>>>>> >>>>>>> https://dl.dropboxusercontent.com/u/523401/code.png >>>>>>> >>>>>>> It's your image with a quick threshold performed in Photoshop. >>>>>>> Notice that you need to ensure the threshold makes all text black. >>>>>>> >>>>>>> On 8 January 2015 at 13:47, Gokcer Gunes <[email protected]> >>>>>>> wrote: >>>>>>> >>>>>>>> i tried with threshold filters too but i didnt get good >>>>>>>> results,best result for me was this way.Can i ask what threshould >>>>>>>> number >>>>>>>> you used for this images. >>>>>>>> >>>>>>>> 2015-01-08 14:30 GMT+02:00 Allistair <[email protected]>: >>>>>>>> >>>>>>>>> Well, I must say I am unsure why one image works for that line and >>>>>>>>> not the other. Clearly the addition of other lines of text is causing >>>>>>>>> Tesseract's classification system to go slightly awry - must be >>>>>>>>> learning >>>>>>>>> something with the addition of the new text that it feeds back to the >>>>>>>>> 1st >>>>>>>>> and gets it wrong. >>>>>>>>> >>>>>>>>> However, I was easily able to get a perfect read on both of them >>>>>>>>> by performing a simple threshold filter (turning all text dark black) >>>>>>>>> before providing to Tesseract. >>>>>>>>> >>>>>>>>> On 8 January 2015 at 00:01, Gokcer Gunes <[email protected]> >>>>>>>>> wrote: >>>>>>>>> >>>>>>>>>> First original Image which sended to tesseract >>>>>>>>>> [image: Satır içi resim 1] >>>>>>>>>> Second Original Image which sended to tesseract >>>>>>>>>> >>>>>>>>>> [image: Satır içi resim 2] >>>>>>>>>> and outputs are in image which you already saw >>>>>>>>>> >>>>>>>>>> 2015-01-08 1:24 GMT+02:00 Gokcer Gunes <[email protected]>: >>>>>>>>>> >>>>>>>>>>> yes i will get and upload them asap >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> 2015-01-08 1:24 GMT+02:00 Gokcer Gunes <[email protected]>: >>>>>>>>>>> >>>>>>>>>>>> ah no its not noise there is no noise in original img it just >>>>>>>>>>>> result of crop in paint >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> 2015-01-08 1:21 GMT+02:00 Allistair C <[email protected]>: >>>>>>>>>>>> >>>>>>>>>>>>> Ah, I see - interesting :) The 2nd example isn't quite the >>>>>>>>>>>>> same - it seems to have some noise on the left hand edge. Also, >>>>>>>>>>>>> what PSM >>>>>>>>>>>>> are you using? Can you send original size images you send to >>>>>>>>>>>>> Tesseract? >>>>>>>>>>>>> >>>>>>>>>>>>> On Wednesday, 7 January 2015 23:05:08 UTC, Gokcer Gunes wrote: >>>>>>>>>>>>>> >>>>>>>>>>>>>> they are input image and output result ,inputs have same >>>>>>>>>>>>>> first line but in first output M is correctly converted to M but >>>>>>>>>>>>>> in 2. >>>>>>>>>>>>>> output M is converted to H >>>>>>>>>>>>>> >>>>>>>>>>>>>> 2015-01-08 1:00 GMT+02:00 Allistair <[email protected]>: >>>>>>>>>>>>>> >>>>>>>>>>>>>>> I see the pictures, yes, but I don't understand the >>>>>>>>>>>>>>> question. Can you elaborate in detail what the issue is? >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> On 7 January 2015 at 22:48, Gokcer Gunes <[email protected]> >>>>>>>>>>>>>>> wrote: >>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> i uploaded them as pictures >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> 2015-01-08 0:29 GMT+02:00 Gokcer Gunes <[email protected]>: >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> yeah resul pictures are in message you cant see them? >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>> 2015-01-07 23:56 GMT+02:00 Allistair C <[email protected]> >>>>>>>>>>>>>>>>> : >>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> Your question is not self-evident, what are you trying to >>>>>>>>>>>>>>>>>> ask? Can you present your OCR results for each test you are >>>>>>>>>>>>>>>>>> conducting? >>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> On Monday, 5 January 2015 18:16:12 UTC, Gokcer Gunes >>>>>>>>>>>>>>>>>> wrote: >>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>> <https://lh3.googleusercontent.com/-QtKcTsT8fGY/VKrU2Bz4zZI/AAAAAAAAAD4/nCbru06vKac/s1600/testry2.png> >>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>> <https://lh6.googleusercontent.com/-FH8hQKrguns/VKrU0KDbMjI/AAAAAAAAADw/OMBj2VRxtyo/s1600/testry1.png> >>>>>>>>>>>>>>>>>>> Examples is at above,what i am doing wrong? >>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>>>>> 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 tesseract-oc...@ >>>>>>>>>>>>>>>>>> googlegroups.com. >>>>>>>>>>>>>>>>>> To post to this group, send email to 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