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| -rw-r--r-- | opencv-qt-integration-1/README.md | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/opencv-qt-integration-1/README.md b/opencv-qt-integration-1/README.md index 8e1de16..11142c8 100644 --- a/opencv-qt-integration-1/README.md +++ b/opencv-qt-integration-1/README.md @@ -1,7 +1,7 @@ OpenCV - Qt Integration ======================= -This sample demonstrate how to display OpenCV's `cv::Mat` within a Qt GUI. Tested with Qt 5.3.0 on Mac OS X. +This code sample shows the basics to display OpenCV's matrix (`cv::Mat`) within a Qt GUI. The code simply load the `flughahn.jpg` image from the `assets/` directory and display it using the `QLabel` widget.  @@ -10,7 +10,7 @@ Within the `python/` directory, you will see the same code written in Python. Compiling --------- -Open `ImageViewer.pro` and modify the variables to match with your system. For example, you might need to modify the paths for includes and libraries especially if you're on Windows. +Open `ImageViewer.pro` and modify the variables to match with your system. For example, you might need to modify the paths for the includes and libraries especially if you're on Windows. INCLUDEPATH += /usr/local/include LIBS += -L/usr/local/lib -lopencv_core -lopencv_highgui -lopencv_imgproc -lopencv_imgcodecs @@ -21,3 +21,14 @@ Change your working directory and compile the code by typing: make If everything is ok, it will produce an executable: `ImageViewer` (Linux), `ImageViewer.exe` (Windows), or `ImageViewer.app` (Mac). Run the executable and you will see the GUI like the screenshot above. + +Known Issues +------------ + +The code using relative path to locate the input image: + + img = cv::imread("../assets/flughahn.jpg"); + +If the program cannot display the image and shows the "Cannot load the input image!" warning, try to use absolute path instead. For example: + + img = cv::imread("/full/path/to/flughahn.jpg"); |