Flyoneme / dct

2D DFT and 2D DCT of images

C++ app using Qt4:

• Discrete cosine transform (2D DCT) of image
• Discrete Fourier transform (2D DFT) of image
• Filter (convolution) images using 2D DFT or 2D DCT

Both DFT and DCT are calculated using FFT.

Packages:

sudo apt-get install qt4-qmake libqt4-dev build-essential

Compile:

qmake -project "QMAKE_CXXFLAGS += -std=c++0x"
qmake
make

Run:

./dct

Screenshot: