Mayank - As you may already know I had a few licensing issues getting the tesseract project into the formal project so development stalled. It does work however and I will be glad to help you out along the way if you have any questions while adding it.
One thing I would highly recommend is to first use tesseract from the command line to tune your parameters and gain some insight into the realistic accuracy you will get extracting the text from your images before going through the hassle of doing the complete setup. Thanks Jeremy Dyer On Sun, Oct 8, 2017 at 9:53 AM, mayank rathi <[email protected]> wrote: > Thanks Joe and Kevin for replying. > > Just to close the loop on this issue. I was "incorrectly" expecting > ExtractImageMetadata to identify Text in Images. As per Kevin's suggestion > we are now exploring tesseract for this. > > Regards > Mayank > > > > On Thu, Sep 28, 2017 at 4:23 PM, Kevin Doran <[email protected]> > wrote: > >> Hi Mayank, >> >> To clarify, are you attempting to extract image metadata (e.g., >> timestamp, width, height) or convert a photo/graphic of text into a text >> string using optical character recognition (OCR). >> >> If the former (metadata), Joe has you on the correct track for digging >> deeper. If OCR, has been done by others with NiFi using custom processors. >> Keyword search is "NiFi OCR". I would recommend giving Jeremy Dyer's >> Tesseract Processor [1] a look. Here is a guide Jeremy published [2]. >> >> Cheers, >> Kevin >> >> [1] https://github.com/jdye64/nifi-addons/tree/master/Processors >> /nifi-tesseract >> [2] https://community.hortonworks.com/articles/28380/nifi-ocr-us >> ing-apache-nifi-to-read-childrens-books.html >> >> On 9/28/17, 16:14, "Joe Witt" <[email protected]> wrote: >> >> Mayank, >> >> When you tried it what happened? Did you look at the flow file >> attributes after the extraction? >> >> Can you share a jpeg you're using that is not working as you'd expect? >> >> Thanks >> Joe >> >> On Thu, Sep 28, 2017 at 4:12 PM, mayank rathi <[email protected]> >> wrote: >> > Hello All, >> > >> > Can NiFi extract text from jpg images? If Yes, then which processor >> do I >> > need to use? I tried ExtractImageMetadata processor and it did not >> help. >> > >> > Thanks in advance. >> > >> >> >> >> > > > -- > NOTICE: This email message is for the sole use of the intended > recipient(s) and may contain confidential and privileged information. Any > unauthorized review, use, disclosure or distribution is prohibited. If you > are not the intended recipient, please contact the sender by reply email > and destroy all copies of the original message. >
