Example NDVI Survey
Example NDVI Survey
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Example of a reconstructed image set collected with an MSDC-RGBN-1-A drone camera. The color and NDVI images represent composites reconstructed from 167 RGB-NIR multispectral images. Brilliant green areas represent NDVI close to 1 indicative of vegetation rich in chlorophyll. Red areas represent NDVI close to 0 indicative of vegetation lacking chlorophyll. An overlay showing NDVI over COLOR at 50% transparency (NDVI/COLOR) is shown to highlight the precise co-registration of the color and NDVI images. Also shown, a 3D rendering reconstructed from the RGB multispectral images (3D RECON) and a color image with exposure positions marked in blue (CAMERAS). Images were captured every 3m at a flight speed of 5m/s and altitude of 30m. Exposure time was 2ms per frame. The camera was fitted with a 16mm standard lens with an aperture of f/4.5. the field of view per frame was 21.12m x 21.12m with a ground pixel size of 4cm x 4cm (2cm x 2cm debayered). Image processing was performed with Spectral Devices multispectral batch processing software and 3DF Zephyr Lite (3Dflow Srl). All images were down-sampled for web viewing.
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