Conference paper
On-board processing of video image sequences
Coding and Visual Communication, Department of Photonics Engineering, Technical University of Denmark1
Department of Photonics Engineering, Technical University of Denmark2
Solar System Physics, National Space Institute, Technical University of Denmark3
National Space Institute, Technical University of Denmark4
Astrophysics, National Space Institute, Technical University of Denmark5
The ldquoatmosphere-space interactions monitorrdquo (ASIM) is a payload to be mounted on one of the external platforms of the Columbus module of the International Space Station (ISS). The instruments include six video cameras, six photometers and one X-ray detector. The main scientific objective of the mission is to study transient luminous events (TLE) above severe thunderstorms: the sprites, jets and elves.
Other atmospheric phenomena are also studied including aurora, gravity waves and meteors. As part of the ASIM Phase B study, on-board processing of data from the cameras is being developed and evaluated. On-board there are six video cameras each capturing images of 1024times1024 pixels of 12 bpp at a frame rate of 15 fps, thus totalling 1080 Mbits/s.
In comparison the average downlink data rate for these images is projected to be 50 kbit/s. This calls for efficient on-board processing to select and compress the data. Algorithms for on-board processing of the image data are presented as well as evaluation of the performance. The main processing steps are event detection, image cropping and image compression.
The on-board processing requirements are also evaluated.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2008 |
| Pages: | 1-7 |
| Proceedings: | International Workshop on Signal Processing for Space Communications |
| ISBN: | 1424425727 , 1424425735 , 1509074384 , 9781424425723 , 9781424425730 and 9781509074389 |
| Types: | Conference paper |
| DOI: | 10.1109/SPSC.2008.4686734 |
| ORCIDs: | Andersen, Jakob Dahl , Chanrion, Olivier Arnaud , Forchhammer, Søren and Rasmussen, Ib Lundgaard |
atmospheric techniques data compression geophysical signal processing image resolution image sequences video cameras
ASIM instrument images Cameras Columbus module Image coding Image sequences Instruments International Space Station Monitoring Payloads Photometry Sprites (computer) X-ray detector X-ray detectors atmosphere-space interactions monitor atmospheric phenomena image compression image cropping on-board processing performance evaluation six photometers six video cameras thunderstorms transient luminous events video image sequences
