MOTION-COMPENSATED GENERIC CODING OF VIDEO-BASED ON A MULTIRESOLUTIONDATA STRUCTURE

We present a generic video codec, which is able to compress image sequ ences efficiently regardless of their input formats. In addition, this codec supports a wide range of bit rates, without significant changes in its main architecture. A multiresolution representation of the dat a is generated by a Gabor-like wavelet transform. The motion estimatio n is performed by a locally adaptive multigrid block-matching techniqu e. This codec can handle both interlaced and progressive input sequenc es, the temporal redundancies being exploited by interframe/interfield coding. A perceptual quantization of the resulting coefficients is th en performed, followed by adaptive entropy coding. Simulations using d ifferent test sequences demonstrate a reconstructed signal of good qua lity for a wide range of bit rates. Thereby demonstrating that this co dec can perform generic coding with reduced complexity and high effici ency.