Title :
Improving TV picture quality with linear-median type operations
Author :
Salo, J. ; Neuvo, Y. ; Hämeenaho, V.
Author_Institution :
Comput. Syst. Lab., Tampere Univ. of Technol., Finland
fDate :
8/1/1988 12:00:00 AM
Abstract :
The FMH filter concept for video signal processing which combines the features of linear and median filters is introduced. In FMH (FIR median hybrid) filters, the overall output is the median calculated over the outputs of FIR subfilters, and the central input sample, the number of values to be sorted, is independent of the filter size; only the size of the FIR subfilters is altered. The noise reduction properties of FMH filters are similar to those of median filters. Applications within the field of digital enhanced TV, EDTV, and HDTV are presented with emphasis on noise suppression and image coding.
Keywords :
computerised picture processing; digital filters; encoding; filtering and prediction theory; high definition television; interference suppression; noise; television systems; video signals; EDTV; FIR median hybrid filters; FIR subfilters; FMH filter concept; HDTV; digital enhanced TV; image coding; linear filters; median filters; noise reduction; noise suppression; video signal processing; Digital filters; Digital signal processing; Filtering; Finite impulse response filter; HDTV; Image coding; Noise reduction; Nonlinear filters; TV; TV equipment; Teletext; Video recording; Video signal processing;
Journal_Title :
Consumer Electronics, IEEE Transactions on
