Patent Details

Nelineární obrazový filtr

Registered: 16 February 2009 Approved: 30 October 2013

English title

Nonlinear image filter

Type

patent

Number

304181

Issuer

Industrial Property Office, Antonína Čermáka 2a, Praha, CZ

License

required - licence fee

Owner

Vysoké učení technické v Brně

Authors

Sekanina Lukáš, prof. Ing., Ph.D. (DCSY FIT BUT)
Vašíček Zdeněk, doc. Ing., Ph.D. (DCSY FIT BUT)

Keywords

image filter, nonlinear filter, digital circuit, FPGA

Description

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.