Method and apparatus for encoding and/or decoding bit-sliced data

摘要

Provided are a method and apparatus for encoding and decoding digital data. The method includes: mapping a plurality of samples constituting the digital data onto bit planes; and selectively encoding all of bit-sliced data of the bit planes from bit-sliced data composed of most significant bits mapped onto the bit planes to bit-sliced data composed of least significant bits in consideration of an encoding efficiency or according to a transformed bit-sliced encoding method. The transformed bit-sliced encoding method lossless encodes a predetermined bit plane. Position information of a peak, peak data and remaining bit plane information are encoded as side information. Sign data of a sample is encoded after the first non-zero bit of the data. Accordingly, an encoding efficiency can be increased. <IMAGE>