|
ChemCam is an active remote sensing instrument to investigate details of the Martian geochemistry using the Laser Induced Breakdown Spectroscopy (LIBS) technique [1], and Remote Micro Imaging (RMI), to be flown on the Mars Science Laboratory (MSL) rover scheduled for launch in 2011. The RMI camera, previously developed for Roseta mission, and provided by IAS, is a precise imager (78- 105μrad for a field of view of 22mrad) and will be used as a microscope to see tiny details such as LIBS impacts, as well as the morphologic context of the LIBS analyses, on the targets, thanks to a larger view of the rocks. The RMI is part of the Mast Unit, delivered by CNES / CESR (France). RMI pictures are marred with defects [2], some of them due to the camera technology, and others to the instrument optics. Among all these picture deteriorations, some are negligible, while others are penalizing. This work describes how we used data from experimentation on particular scene (USAF target, uniform lighting…) to build overall algorithms which have been tested on rock scenery pictures, and will be used by the science team to correct images taken on Mars.
|
