How is spatial resolution affected when averages increase?

The concept of spatial resolution in imaging refers to the ability to distinguish between two closely spaced objects. When averages increase, such as in averaging multiple images or frames, spatial resolution generally remains unchanged. This is because spatial resolution is primarily determined by the inherent characteristics of the imaging system, such as the pixel size and the system's response to spatial frequencies, rather than the processing applied to the data.

When averages are applied, the noise in the images may be reduced, which can enhance the signal-to-noise ratio, but this does not influence the spatial resolution directly. Therefore, even as the average of images increases, the spatial resolution remains constant, allowing for the same level of detail to be obtained in the resulting images.