X-Mas Special 2012 English

diese Seite auf deutsch

This year our X-mas card depicts an image filtering of the IPROM logo in the spatial frequency domain with Christmas motivs as the filter transfer functions. weihnachtskarte.jpg

For this the color image of the IPROM logo is split into the three color channels red, green and blue logorgb.jpg

… and each is then transferred into the spatial frequency domain by means of the 2D-Fourier-Transform. fftlogorgb.jpg

In the spatial frequency domain the complex spectrum is then multiplied by a filter function with a Christmassy amplitude … bild1rgb.jpg

… and phase response. bild2rgb.jpg

The spectrum filtered in this way … fftfiltrgb.jpg

… is finally transformed back. logofiltrgb.jpg