iOS - How to recognise texts as a block using tesseract OCR










1















I am using google's tesseract OCR (https://github.com/gali8/Tesseract-OCR-iOS) to perform image to text conversion in my iOS app.



I'm able to scan and get the string using the following code.



let tesseract:G8Tesseract = G8Tesseract(language:"eng")
tesseract.delegate = self
tesseract.image = imageTaken // image taken from camera
tesseract.engineMode = .tesseractCubeCombined
tesseract.recognize()
print(tesseract.recognizedText)


It scans and retrieves the text in line by line approach. (Mixes the lines from other paragraphs). Like this.



Image 1



enter image description here



Now, How can I get texts as a block and read lines from each blocks separately. Like this.



Image 2



enter image description here



Things I tried.



  • print(tesseract.recognizedBlocks(by: .block))

  • print(tesseract.recognizedBlocks(by: .paragraph))

Still it mixes the lines from different paragraphs and considers the texts as a single line as shown in the image 1.



Any help will be appreciated. Thanks in advance.










share|improve this question


























    1















    I am using google's tesseract OCR (https://github.com/gali8/Tesseract-OCR-iOS) to perform image to text conversion in my iOS app.



    I'm able to scan and get the string using the following code.



    let tesseract:G8Tesseract = G8Tesseract(language:"eng")
    tesseract.delegate = self
    tesseract.image = imageTaken // image taken from camera
    tesseract.engineMode = .tesseractCubeCombined
    tesseract.recognize()
    print(tesseract.recognizedText)


    It scans and retrieves the text in line by line approach. (Mixes the lines from other paragraphs). Like this.



    Image 1



    enter image description here



    Now, How can I get texts as a block and read lines from each blocks separately. Like this.



    Image 2



    enter image description here



    Things I tried.



    • print(tesseract.recognizedBlocks(by: .block))

    • print(tesseract.recognizedBlocks(by: .paragraph))

    Still it mixes the lines from different paragraphs and considers the texts as a single line as shown in the image 1.



    Any help will be appreciated. Thanks in advance.










    share|improve this question
























      1












      1








      1








      I am using google's tesseract OCR (https://github.com/gali8/Tesseract-OCR-iOS) to perform image to text conversion in my iOS app.



      I'm able to scan and get the string using the following code.



      let tesseract:G8Tesseract = G8Tesseract(language:"eng")
      tesseract.delegate = self
      tesseract.image = imageTaken // image taken from camera
      tesseract.engineMode = .tesseractCubeCombined
      tesseract.recognize()
      print(tesseract.recognizedText)


      It scans and retrieves the text in line by line approach. (Mixes the lines from other paragraphs). Like this.



      Image 1



      enter image description here



      Now, How can I get texts as a block and read lines from each blocks separately. Like this.



      Image 2



      enter image description here



      Things I tried.



      • print(tesseract.recognizedBlocks(by: .block))

      • print(tesseract.recognizedBlocks(by: .paragraph))

      Still it mixes the lines from different paragraphs and considers the texts as a single line as shown in the image 1.



      Any help will be appreciated. Thanks in advance.










      share|improve this question














      I am using google's tesseract OCR (https://github.com/gali8/Tesseract-OCR-iOS) to perform image to text conversion in my iOS app.



      I'm able to scan and get the string using the following code.



      let tesseract:G8Tesseract = G8Tesseract(language:"eng")
      tesseract.delegate = self
      tesseract.image = imageTaken // image taken from camera
      tesseract.engineMode = .tesseractCubeCombined
      tesseract.recognize()
      print(tesseract.recognizedText)


      It scans and retrieves the text in line by line approach. (Mixes the lines from other paragraphs). Like this.



      Image 1



      enter image description here



      Now, How can I get texts as a block and read lines from each blocks separately. Like this.



      Image 2



      enter image description here



      Things I tried.



      • print(tesseract.recognizedBlocks(by: .block))

      • print(tesseract.recognizedBlocks(by: .paragraph))

      Still it mixes the lines from different paragraphs and considers the texts as a single line as shown in the image 1.



      Any help will be appreciated. Thanks in advance.







      ios swift ocr tesseract text-recognition






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 12 '18 at 12:07









      TesterTester

      1661114




      1661114






















          0






          active

          oldest

          votes











          Your Answer






          StackExchange.ifUsing("editor", function ()
          StackExchange.using("externalEditor", function ()
          StackExchange.using("snippets", function ()
          StackExchange.snippets.init();
          );
          );
          , "code-snippets");

          StackExchange.ready(function()
          var channelOptions =
          tags: "".split(" "),
          id: "1"
          ;
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function()
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled)
          StackExchange.using("snippets", function()
          createEditor();
          );

          else
          createEditor();

          );

          function createEditor()
          StackExchange.prepareEditor(
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader:
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          ,
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          );



          );













          draft saved

          draft discarded


















          StackExchange.ready(
          function ()
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53261872%2fios-how-to-recognise-texts-as-a-block-using-tesseract-ocr%23new-answer', 'question_page');

          );

          Post as a guest















          Required, but never shown

























          0






          active

          oldest

          votes








          0






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes















          draft saved

          draft discarded
















































          Thanks for contributing an answer to Stack Overflow!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid


          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.

          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function ()
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53261872%2fios-how-to-recognise-texts-as-a-block-using-tesseract-ocr%23new-answer', 'question_page');

          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          Popular posts from this blog

          Kleinkühnau

          Makov (Slowakei)

          Deutsches Schauspielhaus