Agricultural sensor modification.

200,00300,00 Incl VAT

Let us modify your camera for agricultural use.

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Product Description

Shipping instructions:
When you choose this option ship your camera in a suitable container to following adres:
Dutch Digital Works
Att D van den Herik
Noorder Leidsevaart 13
2182NA, Hillegom
Netherlands
Remember to:
1) use a good container, same will be used to send it back!
2) Insure your camera for the money it is worth.

Description

The Normalized Difference Vegetation Index (NDVI) is an index of plant “greenness” or photosynthetic activity, and is one of the most commonly used vegetation indices. Vegetation indices are based on the observation that different surfaces reflect different types of light differently. Photosynthetically active vegetation, in particular, absorbs most of the red light that hits it while reflecting much of the near infrared light. Vegetation that is dead or stressed reflects more red light and less near infrared light. Likewise, non-vegetated surfaces have a much more even reflectance across the light spectrum.


Data for this graph courtesy of the Idaho Chapter of The Nature Conservancy
Reflectance of sunlight from four different land cover types in Hells Canyon, Idaho as measured by a field spectrometer.

By taking the ratio of red and near infrared bands from a remotely-sensed image, an index of vegetation “greenness” can be defined. The Normalized Difference Vegetation Index (NDVI) is probably the most common of these ratio indices for vegetation. NDVI is calculated on a per-pixel basis as the normalized difference between the red and near infrared bands from an image:

where NIR is the near infrared band value for a cell and RED is the red band value for the cell. NDVI can be calculated for any image that has a red and a near infrared band. The biophysical interpretation of NDVI is the fraction of absorbed photosynthetically active radiation.

Many factors affect NDVI values like plant photosynthetic activity, total plant cover, biomass, plant and soil moisture, and plant stress. Because of this, NDVI is correlated with many ecosystem attributes that are of interest to researchers and managers (e.g., net primary productivity, canopy cover, bare ground cover). Also, because it is a ratio of two bands, NDVI helps compensate for differences both in illumination within an image due to slope and aspect, and differences between images due things like time of day or season when the images were acquired. Thus, vegetation indices like NDVI make it possible to compare images over time to look for ecologically significant changes. Vegetation indices like NDVI, however, are not a panacea for rangeland assessment and monitoring. The limitations of NDVI are discussed below.

Good wikipedia article on NVDI and analyzing crops.

https://en.wikipedia.org/wiki/Normalized_Difference_Vegetation_Index

 

Options are:

  • NVDI modification

Sensor sizes (everything smaller than full frame is crop in the selection menu):

500px-sensorsizes

Warranty:

  • Modifcation only – you will recieve warranty only on the sensor modifications (camera parts are excluded)
  • Full warranty – warranty on the whole camera

Additional information

Type of Sensor

Full frame, Crop (APS)

Warranty type

Modification only, Full warranty 1jr

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