TY - GEN

T1 - On-board processing of video image sequences

A1 - Andersen,Jakob Dahl

A1 - Chanrion,Olivier Arnaud

A1 - Forchhammer,Søren

A1 - Rasmussen,Ib Lundgaard

AU - Andersen,Jakob Dahl

AU - Chanrion,Olivier Arnaud

AU - Forchhammer,Søren

AU - Rasmussen,Ib Lundgaard

PB - IEEE

PY - 2008

Y1 - 2008

N2 - 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.

AB - 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.

KW - image resolution

KW - geophysical signal processing

KW - video cameras

KW - data compression

KW - atmospheric techniques

KW - image sequences

UR - http://ieeexplore.ieee.org.globalproxy.cvt.dk/stamp/stamp.jsp?tp=&arnumber=4686734&isnumber=4686692

U2 - 10.1109/SPSC.2008.4686734

DO - 10.1109/SPSC.2008.4686734

SN - 9781424425723

BT - Proc. 10. International Workshop on Signal Processing for Space Communications

T2 - Proc. 10. International Workshop on Signal Processing for Space Communications

SP - 1

EP - 7

ER -