Sorry for the barrage here. The interesting thing is you mentioned feature matching with openCV(I dont know anything at all about it). But the one thing is I can have a repository of these images with me and I need to match it to one of the user generated image.
A little background might help. I can(or come up with) have a repository of all the equipment images with me. A tech might head to the field, take a picture on his mobile device and I need to match it(tech's picture) against my repository and come up with the model number. Is this easier with ocr or feature matching with openCV ? Thanks On Wednesday, January 7, 2015 5:35:47 PM UTC-5, newbie wrote: > > Thanks Allistair , my lucky day as you have responded to both my queries. > Let me try to address your questions below and then go ahead with a few of > my own :-) > > *I also meant to ask whether your use case allows for cropping. If you > know you will have a certain format of image, cropping an area and > resampling should be easy.* > Basically the image will be an user generated image, more like the first > png file, but we could ask the user to zoom in to the model number, if that > would help us indentify the model number.we could do anything with the > image(cropping ,resampling etc). But the problem is the model number > probably will not be located at the same place for all equipments. > > 2. Preprocessing - as it should be programatically done would I be using > opencv in conjunction with tesseract? I did not see much in tesseract for > image processing(I could be totally off). > 3.*.I also use psm 6 for these types of image with various text > locations.* > what is this ? > > Another thing I probably can come up with is all the model #s or images of > all potential equipments, so I have repository to match against. Would that > help in any way ? > > Thanks again for taking the time to respond. Appreciate it. > > > > On Wednesday, January 7, 2015 4:44:47 PM UTC-5, Allistair C wrote: >> >> I also meant to ask whether your use case allows for cropping. If you >> know you will have a certain format of image, cropping an area and >> resampling should be easy. You could also do some preprocessing that looks >> for certain icons in your image to get some context as to where the model >> number is likely to be (see feature matching on Open CV). However, I would >> need to know more about your use case. >> >> That said, resampling your full image to 3000px wide yielded a result >> with a full model number but the more you can crop the area the better the >> result: >> >> AT&T U verse ‘ § >> LINK HD nzc , >> rowzn Q I ‘ .» . ‘ nsuu 4 0|: > I >> / sj J \ >> VIP2500 °%' 7 A R R I s >> >> >> On 7 January 2015 at 21:39, Allistair <[email protected]> wrote: >> >>> A common technique is to pre-process your input image. >>> >>> Resizing produced good results.I also use psm 6 for these types of image >>> with various text locations. >>> >>> In this case I first used your cropped image: >>> >>> tesseract ArrisVIP2500_cropped.png out -l eng -psm 6 config >>> >>> and got: >>> >>> AT&T U verse >>> rowsn >>> O F3. >>> vrrzsoo ’e' >>> >>> Then I resampled your image to 2000px wide: >>> >>> tesseract ArrisVIP2500_cropped_2000.png out2000 -l eng -psm 6 config >>> >>> and got: >>> >>> AT&T U verse >>> POWER © " ‘| >>> / ‘j""'j"’.. >>> VIP2500 '%’ >>> >>> Cheers >>> >>> >>> >>> On 7 January 2015 at 19:26, newbie <[email protected]> wrote: >>> >>>> I am using tess4j, a java wrapper around tesseract and Here are the >>>> images and results. The intent is to extract VIP2500(model number) from >>>> the >>>> image. An help is appreciated. >>>> >>>> Attached are the original png file ( ArrisVIP2500.png),binarized >>>> file(ArrisVIP2500_bin.TIF) and then a zoomed and cropped >>>> file(ArrisVIP2500_cropped.png). >>>> >>>> *ArrisVIP2500.png* >>>> >>>> é ATE-T U-verse >>>> >>>> rowan 0 >>>> / >>>> >>>> *ArrisVIP2500_bin.TIF* >>>> >>>> AT&T U-verse >>>> >>>> rowan <3 3 >>>> / -- >>>> >>>> vxvzsoo ‘Q’ >>>> >>>> *ArrisVIP2500_cropped.png* >>>> >>>> ATE-T U-verse >>>> >>>> rowsn Q >>>> >>>> VIPZSOO ‘e’ This looks the closest to VIP2500 , I >>>> need to get tess4j to reconginze digits, that said, this might not be a >>>> realistic scenario, as someone/something >>>> >>>> Needs to zoom and crop the >>>> image before hand(preprocessing). >>>> >>>> -- >>>> 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/009ffbc7-90cc-417a-90c8-b4ac9b5bb203%40googlegroups.com >>>> >>>> <https://groups.google.com/d/msgid/tesseract-ocr/009ffbc7-90cc-417a-90c8-b4ac9b5bb203%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. 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