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Types Of Imagery And Imagery Specs

TerrAvion delivers the image data bands listed below in OverView, TerrAvion's online platform.

Imagery bands that are visible in TerrAvion OverView
  1. Color: Image consists of Red, Green, and Blue image data. This is the same kind of image you would take with your camera.
  2. Synthetic Color:  This product is a combination of two sensor types. The standard Color bands (Blue, Green, Red) and the red and green bands from the Near Infrared (NIR) camera
  3. Vigor: TerrAvion has two vigor bands, a Standard Vigor and a Dynamic Vigor.
     a. Standard Vigor:
    The Standard Vigor has values been 0 and 1. The colors shown at each value are the same during the whole season. So if your color map has a value of 0.6 and is dark green colored for some point on a field, that dark green color will have the same 0.6 value at any image during the season.
     b. Dynamic Vigor:
    The Dynamic Vigor brings out the maximum detail for each image by narrowing the vigor values to only account for the values seen in that particular image date. The colors seen in the Dynamic Vigor data represent a different value for each image data. The Dynamic Vigor brings out the most detail per image date.
    Vigor stands for Normalized Difference Vegetation Index (NDVI), which is a ratio of the red light to near-infrared light that our sensor sees. NDVI quantifies vegetation by measuring the difference between near-infrared (which vegetation strongly reflects) and red light (which vegetation absorbs). Plants are uniquely efficient at reflecting light in a way that increases the value of this ratio. Healthy vegetation (chlorophyll) reflects more near-infrared (NIR) and green light compared to other wavelengths. But it absorbs more red and blue light. Higher NDVI values mean more chlorophyll is detected by the sensor. Both leaf area and photosynthetic activity increase NDVI values. Typically, these two values are conflated into a measure of “vigor,” but basically, it is a measure of chlorophyll density from whatever cause. The density of chlorophyll in the leaf and the area of the leaves all contribute to the NDVI. Photosynthetic activity directly correlates to the presence of chlorophyll.
  4. Infrared: Imagery produced as a result of sensing electromagnetic radiations emitted or reflected from a given target surface in the infrared position of the electromagnetic spectrum (approximately 0.72 to 1,000 microns). Because near-infrared light is invisible to human eyes, we color it in as red to show where it reflects the most.
  5.  Thermal: TerrAion has two thermal bands, Pan-sharpened Thermal and Thermal.
     a. Pansharpened:
    This band provides spatial/structural insights into the standard thermal product in exchange for data accuracy. It is a combination of two sensor types: the standard thermal band and the NIR band. Due to the combination of two very different types of spectral data, you should not rely on this product to give you accurate temperature or pixel information. It should only be used for spatial/structural insights. 
     b. Thermal:
    This image shows a heat-map of everything visible from the plane. With thermal imagery, you can see plant transpiration trends and observe recent irrigation effects such as irrigation system failures.
  6. Zoning: The zoning layer is designed to show plant health by an area where there is an open canopy. Ignores soil values to avoid the effects of averaging dirt with plants you get in satellite or low-resolution imagery.
  7. Pixel: A pixel is the smallest unit of a digital image or graphic that can be displayed and represented on a digital display device. A pixel is the basic logical unit in digital graphics. Pixels are combined to form a complete image, video, text, or any visible thing on a computer display.

Imagery Specifications
For more information on image current resolution, visit this page.

If you would like to know more details about our cameras and the wavelength of our different bands, complete the form here