Efficient Data Transfer Techniques and VLSI architecture for DWT-Block Coder Integration of JPEG2000 Encoder

JPEG2000 is a new image compression standard known for its rich set of features, impressive compression performance as well as its complexity for efficient hardware implementation. Discrete wavelet transform (DWT) and embedded block coder (BC) are two main modules in JPEG2000 compression system. Data transfer between the DWT and BC modules presents challenges due to difference in data format generated by the DWT and data format accepted by the BC module. This paper investigates data transfer and storage techniques between the DWT and BC modules. The paper proposed an efficient memory organization and a data transfer scheme to reduce the data bandwidth. A VLSI architecture for the proposed data transfer (DT) system is proposed and synthesized for TSMC 0.18 mum process. Simulation results show that the proposed techniques result in an aggregate reduction in the bandwidth requirement by a factor of four for the BC module while incurring an extra hardware cost of only 5%