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Definition
Radiometric resolution is the amount of information in each pixel, i.e. the number of bits representing the energy recorded. Each bit records an exponent of power 2. For example, an 8 bit resolution is 28, which indicates that the sensor has 256 potential digital values (0-255) to store information. Thus, the higher the radiometric resolution, the more values are available to store information, providing better discrimination between even the slightest differences in energy.
(1) smallest change in a quantity being measured that causes a perceptible change in the corresponding indication
(2) the least angular/linear/temporal/spectral distance between two identical point sources of radiation that can be distinguished according to a given criterion,
Source
(1) VIM/ISO:99 [RD18]; (2) NIST [RD15]; (3) MACC [RD13]
RD15: Prokhorov, A. V., R. U. Datla, V. P. Zakharenkov, V. Privalsky, T. W. Humpherys, and V. I. Sapritsky, Spaceborne Optoelectronic Sensors and their Radiometric Calibration. Terms and Definitions. Part 1. Calibration Techniques, Ed. by A. C. Parr and L. K. Issaev, NIST Technical Note NISTIR 7203, March 2005
RD13: MACC II Service Validation Protocol, Deliverable D153.1, May 2013
NESDIS Data Management Lexicon and Related Terms
Suggestions
Need something about resolution of an imaging instrument and to distinguish spectral, spatial and temporal resolutions.
Probably need multiple separate types of resolution
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