As we know, wavelet transform is not an in-built function in OpenCV. We need add wavelet library externally to use it in OpenCV.
Procedure to install wavelet library in Linux:
1. This package contains two wavelet libraries- libwavelet2d.so.1.0 (shared) and libwavelet2s.a (static) compiled essentially from the same source code. Source code is available in the ’src’ folder.
2. You may need to link to header files that are included with their resepctive libraries. They are also available in the ’src’ folder.
3. You may want to install shared library in one of your existing paths to make compilation easier. You can create sym links once inside the folder(say /usr/local/lib) by using following commands
ln -sf libwavelet2d.so.1.0 libwavelet2d.so
ln -sf libwavelet2d.so.1.0 libwavelet2d.so.1
ldconfig
You will probably need superuser privileges to perform previous steps. If you don’t have su privilege then you can move libwavelet2d.so.1.0 to your work folder or where your source code is, create sym links as before and then put your folder in the path during runtime.
ln -sf libwavelet2d.so.1.0 libwavelet2d.so
ln -sf libwavelet2d.so.1.0 libwavelet2d.so.1
export LD_LIBRARY_PATH=.libwavelet2s.a
Working with static library is pretty straightforward. You will only need to include wavelet2s.h in your program and specify the library (-lwavelet2s flag) , include path (-I<path to wavelet2s.h> flag) and library
path (-L<path to libwavelet2s.a> flag).
