Interframe Coding of 3-D Medical Images Using Adaptive Mode Selection Technique in Wavelet Domain

In this paper, we propose a novel interframe coding method for 3-D medical images. Existing 3-D medical image compression techniques are less effective in case that the interslice distance is not narrow enough. Based on adaptive inter/intra mode selection in motion compensation, however, the proposed method provides good performance regardless of the interslice distance. In this method, adaptive mode selection is performed in the wavelet domain rather than the spatial domain to reduce unwanted blocking artifacts, and then the motion-compensated wavelet transform coder is applied for 3-D medical image compression. Simulation results show that the proposed scheme is prospective for 3-D medical image compression.