A. Jung1 , F. Dénes2 , G. Nagy2 , L. Kovács3 , R. Rák3 , B. Szabó3 , J. Nagy3 , J. Deákvári3 , A. Rowlands4 , K. Szalay3
1Szent István University, Faculty of Horticultural Science, Budapest, Hungary
2NAIK Fruit Production Research Institute, Sarród, Hungary
3NAIK Institute of Agricultural Engineering, Gödöllő, Hungary
4CTBTO Preparatory Commission, Vienna, Austria
Multispectral imaging techniques have been tested in OSI related CTBTO activities. The Treaty permits the use of hand-held multispectral cameras during OSI ground inspections. Spectral scanners have successfully mastered several applications over broad spectral ranges; however hand-held scanning has its limitations in mobility and flexibility. To overcome these limitations, snapshot imaging or a spectral frame camera technique can be used. Such a device captures the entire hyperspectral dataset/image during a single integration (one shot takes about 1 ms). During in-field and close-field applications weight, speed and power uptake are important considerations. In the context of an agricultural research project, a hand-held snapshot spectral camera with more then 100 spectral channels in the visible and near infrared region was tested. Different spectro-phenological parameters were inspected. The usability, data delivery, spectral data quality and spectral documentation potential of the camera were evaluated. It was concluded that it provides a rapid and easy-to-use data set for spectral mobile mapping. It worked as a portable non-invasive and non-destructive sampling method with an extreme short data acquisition time – akin to taking a simple digital photograph. Data processing turnaround times were of the order of minutes enabling rapid phenological and physiological characterisation of vegetation cover.