Motion Differential SPIHT for Image Sequence Coding

Ef cient image sequence coding exploits both intraand interframe correlations. SPIHT is ef cient in intra-frame decorrelation for still images. Based on SPIHT, differential-SPIHT removes inter-frame redundancy by reusing the signi cance map of a SPIHT coded frame. The motion differential SPIHT (MD-SPIHT) automatically decides the coding methods for each frame, according to the inter-frame correlations in terms of PSNR. From the simulation results of hyperspectral images, 3D/4D medical images, and video, MD-SPIHT is more ef cient, compared with conventional 2D SPIHT and motion JPEG2000, while retaining the desirables features of rate scalability, random frame access, and computational simplicity. Index Terms— Compression, SPIHT, signi cance map, hyperspectral image, volumetric medical image.