What's the difference between NDVI and EVI imagery?
Normalized Difference Vegetation Index (NDVI) is a popular way of using visible and near-infrared data to come up with a score that represents the health and biomass quantity of vegetation. This is how we can show you a map with red "bad" parts of the field and green "good" parts of the field, instead of just a picture of what it looks like with your eyes.
Enhanced Vegitation Index (EVI) was created to have better consistency than NDVI, by accounting for several other factors that can cause NDVI values to come out different depending on the time of day and atmospheric conditions when the image was captured. We have also found that EVI is able to show stress patterns in the crop that don't show up in the NDVI image, or are much harder to see.
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How does the field imagery in Bridge compare to other satellite imagery out there?
Our imagery has fewer gaps, because it’s a combination of imagery from the government along with private satellite images that they have to pay for. Our imagery is better screened for clouds, so we can salvage a good image taken on a mostly-cloudy ...
What is the source of the satellite field imagery in Bridge?
The satellite imagery in Bridge comes from Geosys. Here is the explanation from their website: Geosys acquires imagery from Landsat 8 and Sentinel 2, which are both government run missions that provide free access. Additionally, we source imagery ...
What's the difference between Watermark and Capacitance soil moisture probes?
Does it matter which one I chose? Bridge is here to answer your questions like "how many inches of water are readily available to my crop?" or "how many days do I have left before the crop starts to stress?" We do the hard work to accurately deliver ...
What is ServiTech Bridge?
ServiTech Bridge is the cutting-edge web application that allows growers, agronomists, (and more!), to quickly and easily get actionable recommendations from their in-field sensors, crop health imagery, and weather forecast. We don't just give you a ...
Can I use my existing probes or equipment with ServiTech Bridge?
We want Bridge to be a place that growers can view their sensor, crop, and equipment data regardless of the source! Unfortunately, it's not as simple as just flipping a switch to allow this to happen. It takes development resources for every source ...