The minimum resolvable contrast (MRC) is a measure of the sensitivity and data resolution of a visible spectrum sensor or camera.
The unit under test (UUT), which is the visible spectrum camera or sensor, is utilized to take a snapshot image of a series of three bar targets with a variety of contrast coatings and specified spatial frequencies.
The smallest target that can be resolved at each contrast level is chosen by a trained observer.
The observer's data is often collected by specialized computer software, which then outputs a graph of contrast vs. spatial frequency at a certain brightness level.
The data are fitted with a first order polynomial, and an MRC curve plotting spatial frequency vs contrast is produced.
Last Updated on 8 months by pinc