If a digital imaging system can record 10 lines per millimeter, what is the spatial resolution?

Spatial resolution in digital imaging refers to the amount of detail that an image holds, which is often quantified in lines pairs per millimeter (lp/mm). If a digital imaging system can record 10 lines per millimeter, this means it can effectively resolve with clarity 10 distinct line pairs in each millimeter.

To derive spatial resolution from this, it is essential to understand that "lines" refers to the dark and light components that create a line pair. Therefore, when one line is counted as one direction (light or dark), it directly links to half of a complete pair. However, since spatial resolution is based on how many pairs can be discerned, the recorded value of 10 lines per millimeter translates directly to 10 line pairs per millimeter.

Consequently, the spatial resolution is indeed 10 lp/mm, aligning with the information provided by the capability of the imaging system to discern 10 lines per millimeter in its recording quality. This makes the spatial resolution a definitive measure of how well the imaging system can capture fine details, further validating 10 lp/mm as the correct assessment of spatial resolution in this context.