A VLSI Progressive Coding for Wavelet-based Image Compression

This paper presents a new algorithm for progressive image coding, called tag setting in hierarchical tree (TSIHT). The TSIHT coding can save the memory requirement while keeping the low-bit-rate quality high. The TSIHT algorithm has been implemented onto a chip with 0.35 mu 1P4M CMOS technology. The chip can handle 256times256 gray-scale images and the gate count is about 2560 gates within 247500 mum² area. The latency of the critical path is 6.32 ns, and the maximum working frequency can be as high as 158 MHz.