sampling rate

The measure of how often a given instrument can make a measurement. This can refer to temporal sampling (time) or spatial sampling (distance). The Nyquist sampling rate defines the minimal sampling rate to reconstruct a signal.

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Spatial Resolution in Digital Imaging

In terms of digital images, spatial resolution refers to the number of pixels utilized in construction of the image. Images having higher spatial resolution are composed with a greater number of pixels than those of lower spatial resolution.