The images were captured by multispectral and a thermal camera and later processed in Pix4Dmapper. The agricultural fields were mapped in April, June and July. The survey was carried out by an Unmanned Aerial Vehicle (UAV) eBee by senseFly owned by the Department of Geomatics. It has been claimed by agronomists that there might be still water causing drainage to some crops. The purpose of the study is to analyse the development of certain crops. The location has been chosen for its historical and archaeological significance as it was fortified in the past and numerous battles took place in the 17 th century. The area is located in the west part of the Czech Republic, near the village of Vysoké Sedliště. It regards a corn and rye fields, surrounded by grass and forests. The chosen study field has been monitored for the past two years. Better techniques and solutions have been sought by scientists in order to improve yields, preserve the environment and therefore increase the potential of agriculture. Photogrammetry has been used for numerous engineering tasks and for the past decade the UAV photogrammetry, in particular, has proved to be applicable in the sphere of agriculture. COBRA MultiSpec is modular and is available in any length up to 5 meters.The following article aims at presenting a new photogrammetric application for precision agriculture. In addition, COBRA MultiSpec offers field adjustable optics allowing users to select the optimum lens position for its application. COBRA MultiSpec is built on the established, compact COBRA Slim platform and utilizes Chip-on-Board LED technology to ensure extreme brightness and excellent uniformity. To enable rapid data acquisition and analysis, COBRA MultiSpec’s exceptional strobe capability allows multispectral strobe patterns to be configured, and up to four optically independent strobe lines pulsed either simultaneously or sequentially with a combined delay and response time of less than one microsecond (1μs). The Prophotonix COBRA MultiSpec is available in wavelengths from 365 – 1500nm and available in configurations from two to twelve wavelengths in a compact form factor. UV, Visible & IR wavelengths are available along with a wide range of optical options to ensure the optimum illumination for your application. Custom lights of up to 12 wavelengths from 365 – 1650nm can also be delivered. RGB-IR (855nm) and RGB-White (3500K) COBRA MultiSpec line lights are now available as standard, offering ideal solutions for a wide variety of multispectral and hyperspectral applications including food sorting and currency inspection. Discrete control of each wavelength allows users to select the optimum wavelength balancing and relative intensities specific to the application needs. Precise control of the light via its user-friendly GUI allows system designers to easily fine-tune the performance of their system. The Prophotonix COBRA MultiSpec delivers multispectral tunable illumination allowing users to optimize the spectrum to maximize contrast, compensate for camera sensitivity, and deliver clearer, higher resolution images for increased accuracy and speed. Offering discrete control of up to twelve wavelengths from 365 to 1650nm via an intuitive graphical user interface, you can maximize contrast by choosing the optimum spectral profile and providing more intensity at specific wavelengths to suit your application needs. The COBRA™ MultiSpec multispectral LED line light has been designed to deliver tunable multispectral light allowing you to optimize image acquisition. The Prophotonix COBRA MultiSpec is a tunable, MultiSpectral LED Line Light with up to 12 wavelengths. KAYA Instruments (Intellectual Property).
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