Authors:
J. J. Sánchez-Hernández
1
;
J. P. García-Ortiz
1
;
V. González-Ruiz
1
;
I. García
1
and
D. Müller
2
Affiliations:
1
University of Almería, Spain
;
2
European Space Agency, Netherlands
Keyword(s):
JPEG 2000, Conditional replenishment, Video transmission.
Related
Ontology
Subjects/Areas/Topics:
Digital Audio and Video Broadcasting
;
Image and Video Processing, Compression and Segmentation
;
Multimedia
;
Multimedia and Communications
;
Multimedia Signal Processing
;
Telecommunications
Abstract:
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 replenishment. 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 ratedistortion point of view, than those that only remove the spatial redundancy (such as Motion JPEG 2000). Other advantages of our approac
h 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.
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