Tag: vegetation

  • Phase One innovates four-band aerial imaging

    Phase-One-4-Band-W

    Phase One Industrial has introduced its Phase One 4-Band Solution, which incorporates an innovative batch-processing tool that automates and simplifies the four-band aerial image generation process.

    Adding a fourth band of near infrared (NIR) image data to three-band color (RGB) image data yields multispectral information useful in vegetation studies — in applications ranging from crop metrics for optimization, to vegetation health, environmental contamination and city observations for green site monitoring.

    Synchronized Phase One metric aerial cameras.
    Synchronized Phase One metric aerial cameras.

    The solution is composed of two synchronized Phase One metric aerial cameras mounted side by side on a specially designed base plate, a Phase One iX Controller and Phase One iX Capture software.

    Images are captured in NIR and RGB bands simultaneously, and processed automatically to generate distortion-free images and perform fine co-registration of the pixels from NIR to the RGB images — including processing different image sizes — with seven different output options, including multispectral CIR images.

    Complementing the solution’s software functionality, the use of two separate cameras to support higher system sensitivity permits operators to separately control capture settings so that they can operate under a wider range of lighting conditions.

    “We very easily installed the cameras into the gyro mount, and all power and communications were automatically configured with the iX-Controller,” said Peter Bochmann, operator of Aerial SurveyS GmbH. “The output four-band images were incredible, showing an area of forest vegetation straight-away that needed attention; we would not have seen this detail with RGB images alone. The flexibility of the solution is also great, since you can combine any two Phase One metric medium-format cameras and accomplish multiple jobs without changing the setup.”

    The Phase One 4-Band Solution offers a variety of benefits:

    • 100MP sensors for RGB and NIR images, no NIR up scaling is needed;
    • CMOS sensors for maximum sensitivity;
    • Post processing is automatic, using the solutions’ iX Controller along with iX Capture;
    • Automatic individual aperture control and auto exposure mode is available for both cameras;
    • Direct connection to GNSS/IMU systems; coordinates are stored inside the EXIF data of each image to speed later post-processing;
    • Also available with 80MP RGB and 60MP Achromatic Sensors.
  • TopoDrone-100 Captures Near Infrared Mapping Data

    DroneMetrexNIRfarm

    DroneMetrex has captured high-quality near-infrared (NIR) mapping data with its TopoDrone-100 UAV. DroneMetrex said in a news release that this is the first time such high quality NIR imagery has been captured by a UAV.

    High-quality NIR data is a tool to detect chlorophyll. Because chlorophyll is emitted by all vegetation to various degrees, experts from land and forest departments, agronomists, vignerons and pastoralists will be able to discriminate between health and vigor of vegetation and between different types of vegetation. The data collected helps determine vegetation stress, disease, pest infection, irrigation faults and nutrient variations.

    “We say ‘unique high-quality mapping’ because the data are both radiometrically and geometrically unparalleled from a drone,” said Thomas Tadrowski, managing director of DroneMetrex. “From the one-flight sortie, TopoDrone-100 users are able to perform vegetation analysis mapping as well as accurate 3D contours/DTM mapping. The pixel resolution is unsurpassed. The data geometry is unsurpassed. The radiometric mapping is unsurpassed.”

    DroneMetrex offers its Extended Spectrum Mapping (ESM) camera modification as an option with the TopoDrone-100. After ESM modification, the camera is supplied with three external screw-on lens filters. Simultaneously using the NIR filter and a high-accuracy L1/L2/L5/GLONASS/COMPASS (BeiDou-2) PPK direct georeferencing solution, the TopoDrone-100 captures three-band imagery, with the near-infrared band recording unparalleled radiometric quality and chlorophyll discrimination.

    The high radiometric quality is achieved because DroneMetrex specialists perform the necessary camera modifications themselves, and have designed the external filters specifically to match the requirements of accurate, discriminative vegetation mapping, DroneMetrex said.

    DroneMetrexVeg01NIR
    Burnt vegetation.
    DroneMetrexBurntVeg01NDVI
    Burnt vegetation NIR.