This subpart of ISO/IEC 14496-3 describes the MPEG-4 Audio Lossless Coding (ALS) algorithm for lossless coding of audio signals. MPEG-4 ALS is a lossless compression scheme for digital audio data, i.e. the decoded data is a bit-identical rec

The wavelet transform divides image into different but interrelated multi-resolution and multi-level sub-bands, so quantization coding strategy of image wavelet coefficient has great flexibility. To address to energy aggregation and correlated fe