The use of the VIFIS (variable interference filter imaging spectrometer) to obtain information on vegetation properties using multiangular data

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Abstract
High resolution multispectral images obtained from different view angles at the field level provide a potentially valuable new approach to the remote sensing of canopy structure as an indicator of water or nutrient stress to the vegetation. Extraction of frequency distributions of radiance from such images gives more information than does the simple bi‐directional reflectance factor which averages the responses for all the surfaces in a large‐area pixel. We describe here a preliminary analysis of this novel use of the Dundee low‐cost Variable Interference Filter Imaging Spectrometer (VIFIS) for this type of study.