Embedded lossless wavelet-based image coder based on successive partition and hybrid bit scanning

A simple embedded lossless wavelet-based image coding algorithm called Succ essive Partition Zero Coder (SPZC), which uses hybrid bit scanning and non- causal adaptive context modelling, is proposed. By successive partition the wavelet coefficients in the spatial-frequency domain. the coefficients are ordered based on their absolute range, The prioritized coefficients are qu antized in a successive approximation manner to generate a binary sequence. which is divided into subsources and encoded by arithmetic coder with non- causal adaptive context modelling. This method is suited for progressive im age transmission (PIT). Experimental results show that SPZC outperforms oth er state-of-the-art coders such as SPIHT. CREW and LJPEG, but slightly infe rior to ECECOW and CALIC in lossless mode. SPZC is simple in both context m odelling and implementation.