Authors: Ali M. Reza
Addresses: US Coast Guard Academy, Department of Engineering, Electrical Engineering Section, 15 Mohegan Avenue, New London, CT 06320, USA
Abstract: System level design for adaptive arithmetic encoder and decoder used in the JPEG 2000 standard is proposed. The encoder design is based on the assumption that the bit-sequence and its corresponding context, obtained through bit modelling for the encoder, are input to the system in their proper order. The original bit-sequence provides the context based on the assumption that the first pass is the clean-up pass and the first context is the run-length context. All other contexts are recursively evaluated as an arithmetic encoder encodes the bit sequence. The final encoding is lossless which results in perfect recovery of the original block image when proper decoding algorithm is used. The decoder design is also based on the assumption that the compressed bit-sequence and its corresponding context, obtained through bit modelling for the decoder, are input to the system in their proper order. The output bit-sequence is also used as an input to the decoder bit modelling.
Keywords: arithmetic encoder; arithmetic decoder; JPEG 2000 standard; image compression standards; hardware implementation; system design; encoder design; bit sequence; bit modelling; image compression; video processing; decoder bit modelling; image sequence processing.
International Journal of Signal and Imaging Systems Engineering, 2016 Vol.9 No.2, pp.105 - 117
Received: 18 Apr 2013
Accepted: 04 Apr 2014
Published online: 23 Feb 2016 *