Color image data
What is Natural Color imagery?
TerrAvion provides two color image products as part of our standard product offering; a Natural Color layer and a Synthetic Color layer. TerrAvion Natural Color imagery is a standard red, green, blue (RGB) product that represents the natural color (or visible spectrum) at point of capture. A natural color image is what your eye would see from a plane and is an image that all users are able to understand. The familiarity of color imagery to users makes it an excellent contextual tool while analyzing other image layers.
What is Synthetic Color imagery?
TerrAvion Synthetic Color imagery is a combination of our color-infrared (CIR) and natural color image layers. Because our color-infrared imagery is slightly higher resolution than our natural color layer, we take the superior structural resolution of the color-infrared product and colorize it with the color information present in the standard natural color layer. The end result is a higher-resolution color image that offers the same information provided by the standard natural color image, but in greater detail. TerrAvion named this image data layer: Synthetic Color.
How is color image data used in agriculture?
While color imagery may not provide the same level of insights as our NDVI and Thermal imagery, it still provides excellent value for a variety of use cases. In particular, color imagery is an excellent tool to identify storm damage and soil issues. Other yield-robbing problems can sometimes be identified in color images before they become evident in NDVI, thermal, or infrared imagery, but in general, color imagery is best used as a contextual reference layer to support some of our more technical image layers.
TerrAvion multi-band technical specification
All channels are flat field corrected. Channels 4, 5, 6 are normalized to channel 6.
NDVI is calculated from channels 4 and 6. Color Infrared (CIR) is generated from channels 4, 5, and 6.
Buffer and alpha blending
TerrAvion adds a geometry buffer on top of the geometry so that extra imagery is contained in the GeoTIFF in case surrounding information is needed for analysis.
Alpha blending, also known as feather, is also contained in the GeoTIFF. It helps tiles derived from GeoTIFFs blend together well when there are overlapping fields.