What the code does
This demo uses code contributed by Prof. Steven Dakin (University of Auckland) which implements a Log-Gabor filter (click here to download the file). The demo I've made uses Steven's code to filter a face image included in the PTB distribution. Various filter parameters are used and the original image and filtered images are displayed on the screen. The code cycles through various filtered images and displays the parameters of the filter used at the bottom of the screen. Full details of how the filter works, and the paper to cite if you use the technique, are provide in Steven's code.