Pit Pattern Classification of Zoom-Endoscopical Colon Images Using DCT and FFT. - Michael Häfner; Leonhard Brunauer; Hannes Payer; Robert Resch; Friedrich Wrba; Alfred Gangl; Andreas Vécsei; Andreas Uhl (CBMS, 2007)

Computer-aided classification of zoom-endoscopical images using Fourier filters. - Michael Häfner; Leonhard Brunauer; Hannes Payer; Robert Resch; Alfred Gangl; Andreas Uhl; Friedrich Wrba; Andreas Vécsei (IEEE Trans. Inf. Technol. Biomed., 2010)