Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Qt Development
  3. General and Desktop
  4. Problem qith OpenCV and Qt creator
Forum Updated to NodeBB v4.3 + New Features

Problem qith OpenCV and Qt creator

Scheduled Pinned Locked Moved General and Desktop
19 Posts 4 Posters 9.0k Views 2 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • S Offline
    S Offline
    SGaist
    Lifetime Qt Champion
    wrote on 2 Apr 2014, 08:10 last edited by
    #10

    If OpenCV is not installed in a known path, you need to tell Qt where to find it.

    Add
    @LIBS += -L/path/to/OpenCV/libraries@

    To your pro file

    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
    0
    • B Offline
      B Offline
      burdos
      wrote on 2 Apr 2014, 19:20 last edited by
      #11

      ok fine i did this
      #-------------------------------------------------

      Project created by QtCreator 2014-04-02T13:24:58

      #-------------------------------------------------

      QT += core

      QT -= gui

      TARGET = Consola
      CONFIG += console
      CONFIG -= app_bundle
      LIBS += -L/path/to/OpenCV/libraries
      TEMPLATE = app

      SOURCES += main.cp

      i have my openCv in the following path so how do i have to do set it to start using it
      the path is the following
      E:\Open Cv\opencv\build\x86\vc12\lib
      so please help me how to do it i am new on it

      1 Reply Last reply
      0
      • S Offline
        S Offline
        SGaist
        Lifetime Qt Champion
        wrote on 2 Apr 2014, 19:51 last edited by
        #12

        @LIBS += -LE:/OpenCV/opencv/build/x86/vc12/lib@

        Forward slashes and avoid spaces in the path, it's known to be problematic

        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
        0
        • B Offline
          B Offline
          burdos
          wrote on 2 Apr 2014, 21:10 last edited by
          #13

          Oh ok thanks for the help so it runs now very well so it means that all the libraries in the folder can be used right??

          1 Reply Last reply
          0
          • S Offline
            S Offline
            SGaist
            Lifetime Qt Champion
            wrote on 2 Apr 2014, 21:15 last edited by
            #14

            Yes it is right

            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
            0
            • B Offline
              B Offline
              burdos
              wrote on 2 Apr 2014, 21:34 last edited by
              #15

              i am trying to do run my code in this way
              //objectTrackingTutorial.cpp

              //Written by Kyle Hounslow 2013

              //Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software")
              //, to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
              //and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

              //The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

              //THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
              //FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
              //LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
              //IN THE SOFTWARE.

              #include <sstream>
              #include <string>
              #include <iostream>
              #include <opencv\highgui.h>
              #include <opencv\cv.h>

              using namespace cv;
              //initial min and max HSV filter values.
              //these will be changed using trackbars
              int H_MIN = 0;
              int H_MAX = 256;
              int S_MIN = 0;
              int S_MAX = 256;
              int V_MIN = 0;
              int V_MAX = 256;

              but it says
              E:\QT\Qt Projects\Project 2\Consola\Project_image\main.cpp:19: error: opencv\highgui.h: No such file or directory
              #include <opencv\highgui.h>
              ^

              E:\QT\Qt Projects\Project 2\Consola\Project image\main.cpp

              so please how can i solve it

              1 Reply Last reply
              0
              • S Offline
                S Offline
                SGaist
                Lifetime Qt Champion
                wrote on 2 Apr 2014, 22:22 last edited by
                #16

                Add the path of OpenCV's include.
                Something like:

                @INCLUDEPATH += E:/OpenCV/opencv/include@

                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
                0
                • B Offline
                  B Offline
                  burdos
                  wrote on 3 Apr 2014, 01:11 last edited by
                  #17

                  i just did it but ok i have this code
                  QT += core gui

                  greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

                  TARGET = Project_image
                  TEMPLATE = app
                  INCLUDEPATH += E:/OpenCV/opencv/include
                  LIBS += -LE:/OpenCV/opencv/build/x86/vc12/lib
                  SOURCES += main.cpp
                  mainwindow.cpp
                  ../../../project 1/objectTrackingTut.cpp
                  ../../../project 1/objectTrackingTut.cpp
                  ../../../project 1/objectTrackingTut.cpp

                  HEADERS += mainwindow.h

                  FORMS += mainwindow.ui

                  and in the main i have
                  #include <sstream>
                  #include <string>
                  #include <iostream>
                  #include <opencv\highgui.h>
                  #include <opencv\cv.h>

                  using namespace cv;
                  //initial min and max HSV filter values.
                  //these will be changed using trackbars
                  int H_MIN = 0;
                  int H_MAX = 256;
                  int S_MIN = 0;
                  int S_MAX = 256;
                  int V_MIN = 0;
                  int V_MAX = 256;
                  //default capture width and height
                  const int FRAME_WIDTH = 640;
                  const int FRAME_HEIGHT = 480;
                  //max number of objects to be detected in frame
                  const int MAX_NUM_OBJECTS=50;
                  //minimum and maximum object area
                  const int MIN_OBJECT_AREA = 2020;
                  const int MAX_OBJECT_AREA = FRAME_HEIGHT
                  FRAME_WIDTH/1.5;
                  //names that will appear at the top of each window
                  const string windowName = "Original Image";
                  const string windowName1 = "HSV Image";
                  const string windowName2 = "Thresholded Image";
                  const string windowName3 = "After Morphological Operations";
                  const string trackbarWindowName = "Trackbars";
                  void on_trackbar( int, void* )
                  {//This function gets called whenever a
                  // trackbar position is changed

                  and i still have problems it says

                  #include <opencv\highgui.h> not such a file or directory i do not know why

                  1 Reply Last reply
                  0
                  • S SGaist
                    27 Mar 2014, 22:28

                    The shadow build is where the compilation currently takes place (it avoids to pollute your source tree). Look in the project panel you'll see a QLineEdit named "Build directory", copy your image in the folder indicated there.

                    C Offline
                    C Offline
                    chfakht
                    wrote on 4 Aug 2015, 13:53 last edited by
                    #18

                    @SGaist please where can i found the build directory in QtCreator !!

                    1 Reply Last reply
                    0
                    • S Offline
                      S Offline
                      SGaist
                      Lifetime Qt Champion
                      wrote on 4 Aug 2015, 20:53 last edited by
                      #19

                      Look at the Projects panel, you have the "Build directory" path there

                      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
                      0

                      • Login

                      • Login or register to search.
                      • First post
                        Last post
                      0
                      • Categories
                      • Recent
                      • Tags
                      • Popular
                      • Users
                      • Groups
                      • Search
                      • Get Qt Extensions
                      • Unsolved