Transmission of low-motion JPEG2000 image sequences using client-driven conditional replenishment

This work proposes a strategy for browsing interactively sequences of high resolution JPEG 2000 remote images. These sequences can be displayed in any order (forward and backward) and following any play/timing pattern. In order to increase the quality of the reconstructions where the retrieved images are only known at the moment of the visualization, this work has proposed and evaluated a novel technique based on conditional re-plenishment. This solution profits from the SNR/Spatial scalability of JPEG 2000 to determine which regions of the next image should be transmitted and what regions should be reused from the previously reconstructed image. Experimental results demonstrate that, even without motion compensation and with a transmission exclusively controlled by the client, the reconstructions are consistently better, both visually and from a rate-distortion point of view, than those that only remove the spatial redundancy (such as Motion JPEG 2000). Other advantages of our approach are that no data overhead is generated, the computational complexity is very small compared to similar techniques, and the fact that it can be used with any JPIP server.