FIR/IIR cascade approximating H.264/AVC interpolation filter

Author

Shlyakhov, Nikolay ; Goncharenko, Miroslav ; Leonenko, Alexei

fYear

2014

fDate

27-30 Oct. 2014

Firstpage

3156

Lastpage

3159

Abstract

Interpolation implemented as an FIR filter followed by an IIR filter is proposed for video coding. Being good approximation to the interpolation filter of the H.264/AVC video coding standard, it has lower complexity measure. It is shown that the proposed filter cascade has minimal achievable round-off error for fixed-point arithmetic. Specific boundary conditions for IIR part that make this filtering affordable for small prediction blocks are provided. The proposed cascade can be used as an interpolation filter for fast motion estimation in hybrid video codecs. Comparison to known short FIR filter used for motion estimation part for H.264/AVC video encoder is provided. The proposed cascade may be used as a self-consistent interpolation filter.

Keywords

FIR filters; IIR filters; codecs; interpolation; motion estimation; video coding; FIR filter; H.264/AVC; IIR filter; fixed-point arithmetic; interpolation filter; motion estimation; specific boundary conditions; video codecs; video coding; Boundary conditions; Complexity theory; Finite impulse response filters; Interpolation; Motion estimation; Splines (mathematics); Video coding; FIR; H.264/AVC; IIR; Interpolation filter; motion estimation; round-off error; signal processing; video coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing (ICIP), 2014 IEEE International Conference on

Conference_Location

Paris

Type

conf

DOI

10.1109/ICIP.2014.7025638

Filename

7025638