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What is Radiometric Resolution Of Satellite Image

Radiometric Resolution is defined as magnitude of EM (Electromagnetic Energy) recorded by a sensor
Units: Measured in Bits
Formula: Each bit records an exponent Power of 2.
  • 1 Bit= 2
  • 2 Bit=4
  • 4 Bit =16
  • 8 Bit=255 digital values
Note: 0 represents Black tone and maximum like 255 represents highest tone.
image source www.satimagingcorp.com
  • 1 Bit will be Black & white
  • 16 Bit will be colored
  • 32 Bit will be more colored and will carry greater energy levels
Higher Radiometric Resolution much variation in colors reflected. Image to left is of  higher radiometric resolution than that of Landsat below.
image source:geoinfo.amu.edu.pl






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