Bitplane Overlap Shift Method for ROI Coding in JPEG2000

摘要

In this paper, we propose a bitplane overlap shift (BOShift) method for region of interest (ROI) coding in JPEG2000. The scaling value used by BOShift depends on the number of magnitude bitplanes as in the maximum shift method (Maxshift), but it is tweaked by using an overlap value in order to identify the relative significance of the quantized transform coefficients, as in the general scaling method. BOShift is compatible with the JPEG2000 standard and it supports both arbitrary scaling values and arbitrary ROI shapes, without the need to encode the ROI shape in the image bit stream. Simulation results have demonstrated that BOShift enhances image coding rates and enables image reconstruction with higher fidelity in comparison with other techniques reported in the literature.