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Qt and Tesseract Linkage

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  • O OlegD
    27 May 2022, 08:03

    tesseract_ver.png
    Is there any chance I've installed wrong tesseract version?

    Downloaded in installed version from the link below
    https://tesseract-ocr.github.io/tessdoc/Home.html

    @OlegD said in Qt and Tesseract Linkage:

    edited as per all recommendations of yours..
    still getting errors:

    last pro.file output

    QT += core
    QT -= gui

    CONFIG += c++11

    TARGET = openCV
    CONFIG += console
    CONFIG -= app_bundle

    TEMPLATE = app
    INCLUDEPATH += C:\opencv\release\install\include

    LIBS += C:\opencv\release\bin\libopencv_core455.dll
    LIBS += C:\opencv\release\bin\libopencv_highgui455.dll
    LIBS += C:\opencv\release\bin\libopencv_imgcodecs455.dll
    LIBS += C:\opencv\release\bin\libopencv_imgproc455.dll
    LIBS += C:\opencv\release\bin\libopencv_calib3d455.dll
    LIBS += C:\opencv\release\bin\libopencv_features2d455.dll
    LIBS += C:\opencv\release\bin\libopencv_video455.dll
    LIBS += C:\opencv\release\bin\libopencv_videoio455.dll

    INCLUDEPATH += "C:\Tesseract-OCR"
    LIBS += -L"C:\Tesseract-OCR"
    INCLUDEPATH += "C:\Tesseract-OCR\include"

    LIBS += -LC:\Qt\opencv_cv2\OPENCV1\build-qt\lib
    -lopencv_calib3d249d
    -lopencv_contrib249d
    -lopencv_core249d
    -lopencv_features2d249d
    -lopencv_flann249d
    -lopencv_gpu249d
    -lopencv_highgui249d
    -lopencv_imgproc249d
    -lopencv_legacy249d
    -lopencv_ml249d
    -lopencv_nonfree249d
    -lopencv_objdetect249d
    -lopencv_ocl249d
    -lopencv_photo249d
    -lopencv_stitching249d
    -lopencv_superres249d
    -lopencv_ts249d
    -lopencv_video249d
    -lopencv_videostab249d

    SOURCES += main.cpp

    DEFINES += QT_DEPRECATED_WARNINGS

    Feel stupid :D

    Is there any chance I've installed wrong tesseract version?

    Downloaded in installed version from the link below
    https://tesseract-ocr.github.io/tessdoc/Home.html

    J Offline
    J Offline
    JonB
    wrote on 27 May 2022, 08:24 last edited by
    #13

    @OlegD said in Qt and Tesseract Linkage:

    Is there any chance I've installed wrong tesseract version?

    That's for you to sort out. But there are no .h files, and no include sub-directory.

    1 Reply Last reply
    0
    • O Offline
      O Offline
      OlegD
      wrote on 27 May 2022, 08:31 last edited by
      #14

      so what should i actually do ?
      I'm totally lost now :D

      J 1 Reply Last reply 27 May 2022, 08:32
      0
      • J Offline
        J Offline
        J.Hilk
        Moderators
        wrote on 27 May 2022, 08:31 last edited by
        #15

        @OlegD said in Qt and Tesseract Linkage:

        LIBS += -LC:\Qt\opencv_cv2\OPENCV1\build-qt\lib
        -lopencv_calib3d249d
        -lopencv_contrib249d
        -lopencv_core249d
        -lopencv_features2d249d
        -lopencv_flann249d
        -lopencv_gpu249d
        -lopencv_highgui249d
        -lopencv_imgproc249d
        -lopencv_legacy249d
        -lopencv_ml249d
        -lopencv_nonfree249d
        -lopencv_objdetect249d
        -lopencv_ocl249d
        -lopencv_photo249d
        -lopencv_stitching249d
        -lopencv_superres249d
        -lopencv_ts249d
        -lopencv_video249d
        -lopencv_videostab249d

        this is incorrect

        those need to be inline or concatenated via \ to escape the (invisible) newline character


        Be aware of the Qt Code of Conduct, when posting : https://forum.qt.io/topic/113070/qt-code-of-conduct


        Q: What's that?
        A: It's blue light.
        Q: What does it do?
        A: It turns blue.

        1 Reply Last reply
        0
        • O OlegD
          27 May 2022, 08:31

          so what should i actually do ?
          I'm totally lost now :D

          J Offline
          J Offline
          JonB
          wrote on 27 May 2022, 08:32 last edited by
          #16

          @OlegD said in Qt and Tesseract Linkage:

          so what should i actually do ?
          I'm totally lost now :D

          Did you read & follow the instructions (for Windows) from the link?

          1 Reply Last reply
          0
          • O Offline
            O Offline
            OlegD
            wrote on 27 May 2022, 09:20 last edited by
            #17

            Well, I dont know how to make it work with QT.
            I've just installed package, realized that there is no instruction for QT and posted to QT forum.
            Please advise how can I install it properly for QT environment

            Windows
            main branch, 3.05 and later
            Using Tesseract

            !!! IMPORTANT !!! To use Tesseract in your application (to include tess or to link it into your app) see this very simple example.
            Build the latest library (using Software Network client)

            Download the latest SW (Software Network https://software-network.org/) client from https://software-network.org/client/.
            Run sw setup (may require administrator access)
            Run sw build org.sw.demo.google.tesseract.tesseract-master.
            

            For visual studio project using tesseract

            Setup Vcpkg the Visual C++ Package Manager.
            Run vcpkg install tesseract:x64-windows for 64-bit. Use –head for the master branch.
            

            Static linking

            To build a self-contained tesseract.exe executable (without any DLLs or runtime dependencies), use Vcpkg as above with the following command:

            vcpkg install tesseract:x64-windows-static for 64-bit
            vcpkg install tesseract:x86-windows-static for 32-bit
            

            Use –head for the main branch. It may still require one DLL for the OpenMP runtime, vcomp140.dll (which you can find in the Visual C++ Redistributable 2015).
            Build training tools

            Today it is possible to build a full set of tess training tools on Windows with Visual Studio. You need to have the latest VS compiler (VS2019/2022 or light VS 2019/2022 build tools distro installed.

            To do this:

            Download the latest SW (Software Network https://software-network.org/client/) client from https://software-network.org/client/.
            Checkout tesseract sources git clone https://github.com/tesseract-ocr/tesseract tesseract && cd tesseract.
            Run sw build.
            Binaries will be available under .sw\out\some hash dir...
            

            Develop Tesseract

            For development purposes of Tesseract itself do the next steps:

            Download and install Git, CMake and put them in PATH.
            Download the latest SW (Software Network https://software-network.org/) client from https://software-network.org/client/. SW is a source package distribution system.
            Add SW client to PATH.
            Run sw setup (may require administrator access)
            If you have a release archive, unpack it to tesseract dir.
            

            If you’re using main branch run

            git clone https://github.com/tesseract-ocr/tesseract tesseract

            Run
            
             cd tesseract
             mkdir build && cd build
             cmake ..
            
            Build a solution (tesseract.sln) in your Visual Studio version. If you want to build and install from command line (e.g. Release build) you can use this command:
            
            cmake --build . --config Release --target install
            
            If you want to install to other directory that C:\Program Files (you will need admin right for this), you need to specify install path during configuration:
            
            cmake .. -G "Visual Studio 15 2017 Win64" -DCMAKE_INSTALL_PREFIX=inst
            

            For development purposes of training tools after cloning a repo from previous paragraph, run

            sw build

            You’ll see a solution link appeared in the root directory of Tesseract.
            Building for x64 platform
            sw

            If you’re building with sw+cmake, run cmake as follows:

            mkdir win64 && cd win64
            cmake .. -G "Visual Studio 14 2015 Win64"

            If you’re building with sw run sw generate, it will create a solution link for you (not yet implemented!).

            J 1 Reply Last reply 27 May 2022, 10:14
            0
            • O OlegD
              27 May 2022, 09:20

              Well, I dont know how to make it work with QT.
              I've just installed package, realized that there is no instruction for QT and posted to QT forum.
              Please advise how can I install it properly for QT environment

              Windows
              main branch, 3.05 and later
              Using Tesseract

              !!! IMPORTANT !!! To use Tesseract in your application (to include tess or to link it into your app) see this very simple example.
              Build the latest library (using Software Network client)

              Download the latest SW (Software Network https://software-network.org/) client from https://software-network.org/client/.
              Run sw setup (may require administrator access)
              Run sw build org.sw.demo.google.tesseract.tesseract-master.
              

              For visual studio project using tesseract

              Setup Vcpkg the Visual C++ Package Manager.
              Run vcpkg install tesseract:x64-windows for 64-bit. Use –head for the master branch.
              

              Static linking

              To build a self-contained tesseract.exe executable (without any DLLs or runtime dependencies), use Vcpkg as above with the following command:

              vcpkg install tesseract:x64-windows-static for 64-bit
              vcpkg install tesseract:x86-windows-static for 32-bit
              

              Use –head for the main branch. It may still require one DLL for the OpenMP runtime, vcomp140.dll (which you can find in the Visual C++ Redistributable 2015).
              Build training tools

              Today it is possible to build a full set of tess training tools on Windows with Visual Studio. You need to have the latest VS compiler (VS2019/2022 or light VS 2019/2022 build tools distro installed.

              To do this:

              Download the latest SW (Software Network https://software-network.org/client/) client from https://software-network.org/client/.
              Checkout tesseract sources git clone https://github.com/tesseract-ocr/tesseract tesseract && cd tesseract.
              Run sw build.
              Binaries will be available under .sw\out\some hash dir...
              

              Develop Tesseract

              For development purposes of Tesseract itself do the next steps:

              Download and install Git, CMake and put them in PATH.
              Download the latest SW (Software Network https://software-network.org/) client from https://software-network.org/client/. SW is a source package distribution system.
              Add SW client to PATH.
              Run sw setup (may require administrator access)
              If you have a release archive, unpack it to tesseract dir.
              

              If you’re using main branch run

              git clone https://github.com/tesseract-ocr/tesseract tesseract

              Run
              
               cd tesseract
               mkdir build && cd build
               cmake ..
              
              Build a solution (tesseract.sln) in your Visual Studio version. If you want to build and install from command line (e.g. Release build) you can use this command:
              
              cmake --build . --config Release --target install
              
              If you want to install to other directory that C:\Program Files (you will need admin right for this), you need to specify install path during configuration:
              
              cmake .. -G "Visual Studio 15 2017 Win64" -DCMAKE_INSTALL_PREFIX=inst
              

              For development purposes of training tools after cloning a repo from previous paragraph, run

              sw build

              You’ll see a solution link appeared in the root directory of Tesseract.
              Building for x64 platform
              sw

              If you’re building with sw+cmake, run cmake as follows:

              mkdir win64 && cd win64
              cmake .. -G "Visual Studio 14 2015 Win64"

              If you’re building with sw run sw generate, it will create a solution link for you (not yet implemented!).

              J Offline
              J Offline
              JonB
              wrote on 27 May 2022, 10:14 last edited by JonB
              #18

              @OlegD
              All you have done is pasted the whole of the instructions. They are for you to read and act on. Only you know what you did/did not do.

              Well, I dont know how to make it work with QT.
              I've just installed package, realized that there is no instruction for QT and posted to QT forum.
              Please advise how can I install it properly for QT environment

              I do not see anything related to Qt, or for Qt instructions.
              Your code has #include <tesseract/baseapi.h>.
              I pointed out that from what you show there are no .h files anywhere (that I can see).
              I suggested you need to see if that file is anywhere, or sort out whatever you need to do to get it available. Assuming you need that line.
              I don't use "tesseract", and I don't suppose anybody else here does either.

              1 Reply Last reply
              0
              • M Offline
                M Offline
                mchinand
                wrote on 27 May 2022, 12:43 last edited by
                #19

                It looks like what you downloaded was just the pre-built binary and associated files to use the tesseract application and not to develop your own. You will have to build the library yourself; just follow the directions that you posted above closely step by step.

                J 1 Reply Last reply 27 May 2022, 12:55
                0
                • M mchinand
                  27 May 2022, 12:43

                  It looks like what you downloaded was just the pre-built binary and associated files to use the tesseract application and not to develop your own. You will have to build the library yourself; just follow the directions that you posted above closely step by step.

                  J Offline
                  J Offline
                  JonB
                  wrote on 27 May 2022, 12:55 last edited by
                  #20

                  @mchinand
                  So it was just a sample application? And they do not provide the .h files with it?

                  Does he really need to build it? IF it comes with pre-compiled external DLLs of whatever to make the (sample?) app work, can't he use those plus .libs & .hs for his own code without having to build the .dlls?

                  1 Reply Last reply
                  0
                  • M Offline
                    M Offline
                    mchinand
                    wrote on 27 May 2022, 13:06 last edited by
                    #21

                    It might be possible but probably easier to just build it. I'm not seeing a .lib only a 'tesseract-5.dll'. I would characterize it as an application that non-developers use and not just a sample application (like you though, I've never used it).

                    1 Reply Last reply
                    1
                    • O Offline
                      O Offline
                      OlegD
                      wrote on 27 May 2022, 15:06 last edited by
                      #22

                      Guys, so if I do want to install close to instruction, how can I proceed with this lines?

                      For visual studio project using tesseract

                      Setup Vcpkg the Visual C++ Package Manager.
                      Run vcpkg install tesseract:x64-windows for 64-bit. Use –head for the master branch.
                      Static linking

                      To build a self-contained tesseract.exe executable (without any DLLs or runtime dependencies), use Vcpkg as above with the following command:

                      vcpkg install tesseract:x64-windows-static for 64-bit
                      vcpkg install tesseract:x86-windows-static for 32-bit

                      J 1 Reply Last reply 29 May 2022, 08:50
                      0
                      • O Offline
                        O Offline
                        OlegD
                        wrote on 29 May 2022, 08:39 last edited by
                        #23

                        Still looking for any advise

                        1 Reply Last reply
                        0
                        • O OlegD
                          27 May 2022, 15:06

                          Guys, so if I do want to install close to instruction, how can I proceed with this lines?

                          For visual studio project using tesseract

                          Setup Vcpkg the Visual C++ Package Manager.
                          Run vcpkg install tesseract:x64-windows for 64-bit. Use –head for the master branch.
                          Static linking

                          To build a self-contained tesseract.exe executable (without any DLLs or runtime dependencies), use Vcpkg as above with the following command:

                          vcpkg install tesseract:x64-windows-static for 64-bit
                          vcpkg install tesseract:x86-windows-static for 32-bit

                          J Offline
                          J Offline
                          JonB
                          wrote on 29 May 2022, 08:50 last edited by
                          #24

                          @OlegD said in Qt and Tesseract Linkage:

                          Run vcpkg install tesseract:x64-windows for 64-bit. Use –head for the master branch.

                          Did you do that?

                          Otherwise go ask the tesseract people. Qt people do not know anything about this package, we do not know whether it downloads e.g. .h files, only you/tesseract people do.

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                          • O Offline
                            O Offline
                            OlegD
                            wrote on 29 May 2022, 11:09 last edited by
                            #25

                            few bullets of instructions do not work..:K
                            I've posted to Teseract forum, still no respond...
                            Maybe you can share e-mail or phone from anyone related to Teseract?
                            Big Thanks in advance

                            1 Reply Last reply
                            0
                            • O Offline
                              O Offline
                              OlegD
                              wrote on 13 Jun 2022, 17:24 last edited by
                              #26

                              Still looking for help to install Tesseract with QT
                              Can pay for help

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                              0
                              • SGaistS Offline
                                SGaistS Offline
                                SGaist
                                Lifetime Qt Champion
                                wrote on 13 Jun 2022, 19:13 last edited by
                                #27

                                Did you manage to install tesseract at all ?

                                Interested in AI ? www.idiap.ch
                                Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                                • O Offline
                                  O Offline
                                  OlegD
                                  wrote on 14 Jun 2022, 10:17 last edited by
                                  #28

                                  Yes, but it does not work, so I'm asking for help

                                  1 Reply Last reply
                                  0
                                  • SGaistS Offline
                                    SGaistS Offline
                                    SGaist
                                    Lifetime Qt Champion
                                    wrote on 14 Jun 2022, 11:23 last edited by
                                    #29

                                    What exactly did you do ?
                                    What was the outcome ?

                                    Did you follow the documentation provided by the project itself ?

                                    You seem to have already checked it based on one of your previous answer. However you did not explain what your issue was with them.

                                    Interested in AI ? www.idiap.ch
                                    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                    1 Reply Last reply
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                                    • O Offline
                                      O Offline
                                      OlegD
                                      wrote on 14 Jun 2022, 11:53 last edited by
                                      #30

                                      If I execute files below thay just do nothing

                                      Download the latest SW (Software Network https://software-network.org/) client from https://software-network.org/client/.
                                      Run sw setup (may require administrator access)
                                      Run sw build org.sw.demo.google.tesseract.tesseract-master.
                                      
                                      1 Reply Last reply
                                      0
                                      • O OlegD
                                        26 May 2022, 17:58

                                        @mchinand said in Qt and Tesseract Linkage:

                                        INCLUDEPATH += C:\Program Files(x86)\Tesseract-OCR)
                                        LIBS += C:\Program Files(x86)\Tesseract-OCR)
                                        LIBS +=-LC:\Program Files(x86)\Tesseract-OCR)

                                        still saying D:\PROG\May\Tesseract\main.cpp:1: error: tesseract/baseapi.h: No such file or directory
                                        D:\PROG\May\Tesseract\main.cpp:1:10: fatal error: tesseract/baseapi.h: No such file or directory
                                        1 | #include <tesseract/baseapi.h>
                                        | ^~~~~~~~~~~~~~~~~~~~~

                                        current pro file

                                        QT += core
                                        QT -= gui

                                        CONFIG += c++11

                                        TARGET = openCV
                                        CONFIG += console
                                        CONFIG -= app_bundle

                                        TEMPLATE = app
                                        INCLUDEPATH += C:\opencv\release\install\include

                                        LIBS += C:\opencv\release\bin\libopencv_core455.dll
                                        LIBS += C:\opencv\release\bin\libopencv_highgui455.dll
                                        LIBS += C:\opencv\release\bin\libopencv_imgcodecs455.dll
                                        LIBS += C:\opencv\release\bin\libopencv_imgproc455.dll
                                        LIBS += C:\opencv\release\bin\libopencv_calib3d455.dll
                                        LIBS += C:\opencv\release\bin\libopencv_features2d455.dll
                                        LIBS += C:\opencv\release\bin\libopencv_video455.dll
                                        LIBS += C:\opencv\release\bin\libopencv_videoio455.dll

                                        INCLUDEPATH += C:\Program Files(x86)\Tesseract-OCR)
                                        LIBS += C:\Program Files(x86)\Tesseract-OCR)

                                        LIBS += -LC:\Qt\opencv_cv2\OPENCV1\build-qt\lib
                                        -lopencv_calib3d249d
                                        -lopencv_contrib249d
                                        -lopencv_core249d
                                        -lopencv_features2d249d
                                        -lopencv_flann249d
                                        -lopencv_gpu249d
                                        -lopencv_highgui249d
                                        -lopencv_imgproc249d
                                        -lopencv_legacy249d
                                        -lopencv_ml249d
                                        -lopencv_nonfree249d
                                        -lopencv_objdetect249d
                                        -lopencv_ocl249d
                                        -lopencv_photo249d
                                        -lopencv_stitching249d
                                        -lopencv_superres249d
                                        -lopencv_ts249d
                                        -lopencv_video249d
                                        -lopencv_videostab249d

                                        SOURCES += main.cpp

                                        DEFINES += QT_DEPRECATED_WARNINGS

                                        please advise!

                                        J Offline
                                        J Offline
                                        JonB
                                        wrote on 14 Jun 2022, 11:58 last edited by
                                        #31

                                        @OlegD said in Qt and Tesseract Linkage:

                                        still saying D:\PROG\May\Tesseract\main.cpp:1: error: tesseract/baseapi.h: No such file or directory

                                        As I said earlier, you show no signs of having any tesseract .h files at all?

                                        I don't think you are reading and following all the instructions. Please do so. For example, in https://tesseract-ocr.github.io/tessdoc/Compiling.html#windows

                                        Checkout tesseract sources git clone https://github.com/tesseract-ocr/tesseract tesseract && cd tesseract.

                                        I can see that would at least give you tesseract/include/tesseract/*.h, which is what you need.....

                                        1 Reply Last reply
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                                        • O Offline
                                          O Offline
                                          OlegD
                                          wrote on 14 Jun 2022, 12:04 last edited by
                                          #32

                                          @JonB said in Qt and Tesseract Linkage:

                                          tesseract/include/tesseract/*.h

                                          I can not run these files

                                          Download the latest SW (Software Network https://software-network.org/) client from https://software-network.org/client/.
                                          Run sw setup (may require administrator access)
                                          Run sw build org.sw.demo.google.tesseract.tesseract-master

                                          J 1 Reply Last reply 14 Jun 2022, 12:08
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