A version of 2-D median filter specialized to impulse noise removal introducing negligible distortion in noise-free pixels is proposed. Only pixels of prefixed ranks are replaced with the local median. When extreme ranks (min and max) are chosen, spikes are selectively suppressed, more efficiently than by median filter. Error probability for salt/pepper noise is theoretically derived. MAE and visual comparisons with median filter attest increased accuracy
Two-dimensional rank-conditioned median filter / L. Alparone; Baronti S.; Carlà R.. - In: IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS. 2, ANALOG AND DIGITAL SIGNAL PROCESSING. - ISSN 1057-7130. - STAMPA. - 42:(1995), pp. 130-132. [10.1109/82.365355]
Two-dimensional rank-conditioned median filter
ALPARONE, LUCIANO;
1995
Abstract
A version of 2-D median filter specialized to impulse noise removal introducing negligible distortion in noise-free pixels is proposed. Only pixels of prefixed ranks are replaced with the local median. When extreme ranks (min and max) are chosen, spikes are selectively suppressed, more efficiently than by median filter. Error probability for salt/pepper noise is theoretically derived. MAE and visual comparisons with median filter attest increased accuracy
I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
