In this project I create a GUI application which lets a user remove blemishes from an input image by means of a mouse.
It is assumed that OpenCV 4.x, C++11 compiler, and cmake 2.18.12 or newer are installed on the system.
Open CMakeLists.txt and set the correct OpenCV directory in the following line:
SET(OpenCV_DIR /home/hp/workfolder/OpenCV-Installation/installation/OpenCV-master/lib/cmake/opencv4)
Depending on the platform and the way OpenCV was installed, it may be needed to provide the path to cmake files explicitly. On my KUbuntu 20.04 after building OpenCV 4.4.0 from sources the working OpenCV_DIR looks like /lib/cmake/opencv4. On Windows 8.1 after installing a binary distribution of OpenCV 4.2.0 it is C:\OpenCV\build.
In the root of the project folder create the build directory unless it already exists. Then from the terminal run the following:
cd build
cmake ..
This should generate the build files. When it's done, compile the code:
cmake --build . --config Release
The program has to be run from the command line. It takes one argument which is the path where the input image should be read from:
reblem <input file path>
The project folder contains a sample image which can be used as an input file for the program.
Sample usage (linux):
./reblem ../blemish.png
Blemish Remover is self-explanatory. It starts from the user guide which briefly explains how to use the software. In order to start editing the image, press Space.
Select a blemish by left clicking on it. Once the mouse button is released, the program will remove the blemish.
To undo a previous action, press U on your keyboard. The program maintains the history of 10 last changes.
Depending on a blemish size, you may want to increase or decrease the size of the healing brush. It can be done using a mouse wheel.
In case you want to discard all changes and start afresh, press R. This will reset the image to its original state. This action is not reversible.
In order to quit the app, press Escape.