Wavelet-Domain L∞-Constrained Two-Stage Near-Lossless EEG Coder

In tins paper, a two-stage coder based near-lossless compression of Electroencephalogram (EEC) is discussed. It consists of wavelet based lossy coding layer (until bitplane n(d)) followed by entropy coding of the wavelet domain residuals. L-infinity-error bound is fixed in wavelet domain and the corresponding time-domain absolute error variation is studied. Studies show that intermediate demarcating bit-planes (n(d)) register a higher compression and gives a nearly constant time-domain error. Both the normal and epileptic EEC registered a comparable compression performance.