This was the first of two experiments conducted in a barley field near Foulum. The purpose of the experiments was to measure gap fraction and canopy structure using a high-dynamic-range RGB (HDR-RGB) camera. The camera was mounted on the API field robot. In addition, a multi-spectral CROPSCAN sensor was mounted on the API for reference measurements. At each sample site, the crops were photographed from 12 different compass angles. The camera was mounted in a 30 degrees zenith angle.
At this experiment, there were problems with the CROPSCAN sensor, so no multi-spectral data were collected.
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Rasmus Jørgensen and Hans Jørgen Andersen following the API on its way to the first sample point. The CROPSCAN sensor is mounted on the top bar, and the HDR-RGB camera is mounted on the lower bar. |
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The API performing circle measurements at a sample point. |
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Discussing the experiment. From left to right, Anton Thomsen, Rasmus Jørgensen, Ebbe Laursen, and Hans Jørgen Andersen. |
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Example of a site with low weed density. |
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Example of a site with high weed density. |
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Example of HDR-RGB images for a sample point. |
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Example of an HDR-RGB canopy image. |
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Example of an HDR-RGB canopy image. |
Last modified: 12 August 2004 (Kristian Kirk)