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03 Jun

Conversely, coarser spatial resolution would allow improved radiometric and/or spectral resolution.

Thus, these three types of resolution must be balanced against the desired capabilities and objectives of the sensor.

This illustration shows two hands juggle three balls representing radiometric, spectral and spatial resolution.

This demonstrates that the user must continuously make tradeoffs between these three resolutions.

However, if only 4 bits were used, then only 24=16 values ranging from 0 to 15 would be available.

Thus, the radiometric resolution would be much less.

Radioactivity had not been discovered at the time of Kelvin’s work, so he did not understand that the Earth continues to produce heat through the radioactive decay of unstable isotopes.Image data are generally displayed in a range of grey tones, with black representing a digital number of 0 and white representing the maximum value (for example, 255 in 8-bit data).By comparing a 2-bit image with an 8-bit image, we can see that there is a large difference in the level of detail discernible depending on their radiometric resolutions.For example, about 1.5 percent of a quantity of Uranium 238 will decay to lead every 100 million years.By measuring the ratio of lead to uranium in a rock sample, its age can be determined.