Feasibility study for a catadioptric bi-spectral imaging system

C. Gée; L. Berret; C. Chardon; J. Bossu; J.-P. Guillemin; G. Jones; F. Truchetet

doi:10.1117/12.766471

26 February 2008 Feasibility study for a catadioptric bi-spectral imaging system

C. Gée, L. Berret, C. Chardon, J. Bossu, J.-P. Guillemin, G. Jones, F. Truchetet

Proceedings Volume 6813, Image Processing: Machine Vision Applications; 681306 (2008) https://doi.org/10.1117/12.766471
Event: Electronic Imaging, 2008, San Jose, California, United States

Abstract

In the context of sustainable agriculture, matching accurately herbicides and weeds is an important task. The site specific spraying requires a preliminary diagnostic depending on the plant species identification and localisation. In order to distinguish between weeds species or to discriminate between weeds and soil from their spectral properties, we investigate a spectral approach developing a catadioptric bi-spectral imaging system as a diagnostic tool. The aim of this project consists in the conception and feasibility of a vision system which captures a pair of images with a single camera by the use of two planar mirrors. Then fixing a filter on each mirror, two different spectral channels (e.g. Blue and Green) of the scene can be obtained. The optical modeling is explained to shot the same scene. A calibration based on the inverse pinhole model is required to be able to superpose the scene. The choice of interferential filters is discussed to extract agronomic information from the scene by the use of vegetation index.

Citation Download Citation

C. Gée, L. Berret, C. Chardon, J. Bossu, J.-P. Guillemin, G. Jones, and F. Truchetet "Feasibility study for a catadioptric bi-spectral imaging system", Proc. SPIE 6813, Image Processing: Machine Vision Applications, 681306 (26 February 2008); https://doi.org/10.1117/12.766471

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