Nelineární obrazový filtr
Registered: 16 February 2009 Approved: 30 October 2013
Vašíček Zdeněk, doc. Ing., Ph.D. (DCSY FIT BUT)
image filter, nonlinear filter, digital circuit, FPGA
The present invention relates to a non-linear video filter for suppressing impulse noise of the salt and pepper type, wherein the non-linear video filter of the present invention consists of a prefiltration circuit, which is connected to four parallel operating non-linear filters (B1, B2, B3, B4). The output of these non-linear filters (B1, B2, B3, B4) is connected along with a buffer (B5) output to a selector switch (C) for selection of one of its inputs to primary output of the entire filter wherein the individual filters (B1, B2, B3, B4) exhibit different function to each other.