Influence of image compression on the in situ stereoscopic reconstruction of a cometary surface for the ROSETTA mission.

Computer Science

Scientific paper

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Space Missions: Image Reconstruction, Space Missions: Comets

Scientific paper

As part of the ROSETTA mission, the surface science package, wich will land on the nucleus of the comet 46P/Wirtanen, includes a stereoscopic imaging instrument CIVA-P. The data volume required by the scientific objectives and the limited capability of the telemetry imposes the use of image-loss compression techniques. The authors study the influence of the losses due to compression on the three-dimensional surface reconstruction. They prove that the best strategy consists in compressing both the left and right images with the same ratio, transmitting them and finally applying on Earth the stereoscopic calculation on the decompressed images.

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