Subband prediction using leakage information in image coding

This paper examines the potential uses of interband leakage in image coders based on subband decomposition. The approach taken is to use the lowpass subband to predict the signal behavior in the other bands. This information is then used to both inform the coder/decoder as to likely locations for significant energy in the highpass bands, and to form a difference signal that can be coded at a lower rate. These methods give significant gains for some image/filter combinations, but in general it seems that analysis filters producing low correlation should be used if possible.<>