Miniature 3D Microscope and Reflectometer for Space Exploration
| Autor: | Sara Abrahamsson, Gustav M. Pettersson, Uland Wong, Michael Dille |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Microscope Computer science 3D reconstruction ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION 01 natural sciences Reflectivity GeneralLiterature_MISCELLANEOUS Space exploration Characterization (materials science) law.invention 010309 optics 03 medical and health sciences Computational photography Physical limitations 030104 developmental biology Photometric stereo law 0103 physical sciences Remote sensing |
| Zdroj: | ICCP |
| Popis: | Characterization of objects in all dimensions at a microscopic level is important in numerous applications including surface analysis on planetary bodies. Existing microscopes fit for this task are large bench-top devices unsuitable for in-situ use, particularly in resource-constrained remote robotic exploration. Computational imaging techniques present a powerful means to overcome physical limitations in fielded sensors, but have seen especially little use in space applications. We present a miniature (150 gram) 3D microscopic imager without moving parts capable of providing 1-megapixel images at approximately 1 micron horizontal and 5 micron vertical resolution. This device combines light-field imaging and photometric stereo to provide both 3D reconstruction and reflectance characterization of individual soil grains. We thoroughly evaluate its performance by designing and nanofabricating a 3D-fiducial and further demonstrate its operation on a library of planetary soil simulants. This system opens vast opportunities for extension, demonstrating the potential of computational imaging to amplify sensing capabilities in space. |
| Databáze: | OpenAIRE |
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